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  • Case ID: 353602
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RayTac mdbt42q-p512kv2 programming issue with custom board

AhmetSafi

I'm trying to program a custom board with a Raytac nRF52832 module using the nRF52 DK's onboard J-Link via the P20 debug out port. The J-Link only detects the onboard nRF52832, not my external module.

I've checked the following:

  • My custom board is powered with a solid 3V.
  • The module's DEC4 pin shows 1.234V, so its internal regulator is working.
  • All P20 connections (GND, SWDCLK, SWDIO, RESET) are wired correctly per the DK user guide.
  • The P20 VTG pin is correctly connected to my board's 3V supply.
  • The P19 debug out port is completely empty.

To verify my board, I connected an ST-Link v2 with OpenOCD, and it successfully detected the chip. The log shows:

❯ openocd -f interface/stlink.cfg -f target/nrf52.cfg
Open On-Chip Debugger 0.12.0
Licensed under GNU GPL v2
For bug reports, read
Info : auto-selecting first available session transport "hla_swd". To override use 'transport select <transport>'.
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
nRF52 device has a CTRL-AP dedicated to recover the device from AP lock.
A high level adapter (like a ST-Link) you are currently using cannot access
the CTRL-AP so 'nrf52_recover' command will not work.
Do not enable UICR APPROTECT.
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : clock speed 1000 kHz
Info : STLINK V2J45M31 (API v2) VID:PID 0483:374B
Info : Target voltage: 3.263684
Info : [nrf52.cpu] Cortex-M4 r0p1 processor detected
Info : [nrf52.cpu] target has 6 breakpoints, 4 watchpoints
Info : starting gdb server for nrf52.cpu on 3333
Info : Listening on port 3333 for gdb connections
Questions:
  1. Since the ST-Link works, is there a special nrfjprog or nrfutil command other then "recover" needed to force the DK's J-Link to use the P20 port? I tried vs code board recover and nrf tool recovering but it did not help.
  2. If I give up on the DK, will a J-Link EDU Mini work correctly with a 3V (not 3.3V) target board? I will buy j-link edu if it will work.
  3. Can I recover chip with using ST-link?

Document1-20251104125702.pdf

Parents
  • 0

    Hi, 

    My custom board is powered with a solid 3V.

    Do you power both your cusbom board and the nRF52DK? 

    What is the detected VTref value when you open the J-Link Commander?

    All P20 connections (GND, SWDCLK, SWDIO, RESET) are wired correctly per the DK user guide.

    Check this post.

    is there a special nrfjprog or nrfutil command other then "recover" needed to force the DK's J-Link to use the P20 port? I tried vs code board recover and nrf tool recovering but it did not help.

    Please run "nrfutil self-upgrade" and "nrfutil upgrade" to upgrade nrfutil and nrfutil device versions, then execute "nrfutil version" and "nrfutil list" to check they are the latest version nrfutil 8.1.1 and device 2.15.1. Now, you can run "nrfutil device recover". If it still cannot help, please provide the log. 

    If I give up on the DK, will a J-Link EDU Mini work correctly with a 3V (not 3.3V) target board? I will buy j-link edu if it will work.

    Yes, here is a use case  Error -160 on nrfjprog when verify nrf52840 using J-Link EDU Mini for nRF52840, but I think it also applies to nRF52832. 

    Can I recover chip with using ST-link?

    We don't test with ST-Link, and we are not familiar with ST-Link. 

    Regards,
    Amanda H.

Reply
  • 0

    Hi, 

    My custom board is powered with a solid 3V.

    Do you power both your cusbom board and the nRF52DK? 

    What is the detected VTref value when you open the J-Link Commander?

    All P20 connections (GND, SWDCLK, SWDIO, RESET) are wired correctly per the DK user guide.

    Check this post.

    is there a special nrfjprog or nrfutil command other then "recover" needed to force the DK's J-Link to use the P20 port? I tried vs code board recover and nrf tool recovering but it did not help.

    Please run "nrfutil self-upgrade" and "nrfutil upgrade" to upgrade nrfutil and nrfutil device versions, then execute "nrfutil version" and "nrfutil list" to check they are the latest version nrfutil 8.1.1 and device 2.15.1. Now, you can run "nrfutil device recover". If it still cannot help, please provide the log. 

    If I give up on the DK, will a J-Link EDU Mini work correctly with a 3V (not 3.3V) target board? I will buy j-link edu if it will work.

    Yes, here is a use case  Error -160 on nrfjprog when verify nrf52840 using J-Link EDU Mini for nRF52840, but I think it also applies to nRF52832. 

    Can I recover chip with using ST-link?

    We don't test with ST-Link, and we are not familiar with ST-Link. 

    Regards,
    Amanda H.

Children
  • 0 in reply to Amanda Hsieh

    Here is JlinkExe and "nrfutils device recover" outputs:

    And here is my connections:

    Here is my PCB layout:

    The component between VBATT and VDD is 0R resistor. I guess this should be a problem.

    Here is flashing log:

    I checked VTG pin with a multimeter and my custom board correctly provide 3 volts.

    Thanks you for you support I hope this will be enough to diagnose my problem. 

  • 0 in reply to AhmetSafi

    Could you run

    set NRFUTIL_LOG=trace
    west flash (or whatever invocation you used)

    in a terminal in vscode, and then send the log from <USERHOME>/.nrfutil/logs/nrfutil-device.log?

    via 

  • 0 in reply to Amanda Hsieh

    Hi,

    Here is flash command output

    And here is log file:

    Fullscreen 6281.nrfutil-device.log Download 
    [2025-10-25T21:02:44.481Z] [20836] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with list 
[2025-10-25T21:02:44.482Z] [20836] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 20835
[2025-10-25T21:02:44.824Z] [20836] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-25T21:02:44.829Z] [20836] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-25T21:02:44.829Z] [20836] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-10-25T21:04:23.804Z] [20897] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with recover --serial-number 1050324898 
[2025-10-25T21:04:23.805Z] [20897] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 20896
[2025-10-25T21:04:23.818Z] [20897] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-25T21:04:23.823Z] [20897] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-25T21:04:23.823Z] [20897] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-10-25T21:04:23.826Z] [20897] INFO - [nrf_probe::probe_pool] Creating Probe; connection=JLink(Usb(JLinkSerialNumber(1050324898))) initialize_timeout=40s worker_timeout=20s log_option=Forward
[2025-10-25T21:04:23.831Z] [20897] INFO - [tracing::span] worker supervisor;
[2025-10-25T21:04:24.419Z] [20897] INFO - [nrf_probe::probe_pool] Handshake signatures match
[2025-10-25T21:04:24.420Z] [20897] INFO - [nrf_probe::probe_pool] Connection with Probe worker established. time_stamp=1761426264420071
[2025-10-25T21:04:24.420Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} nrf-probe version 0.48.0 msg.target="nrf_probe::probe_pool::worker" time_stamp=1761426264409169
[2025-10-25T21:04:26.831Z] [20897] WARN - [probe] J-Link seems to be doing a firmware update. This might take up to 60 seconds
[2025-10-25T21:04:52.202Z] [20897] INFO - [nrf_probe::probe_pool] execute_inner; request=DetectDeviceInformation { use_cache: true } response_timeout=20s
[2025-10-25T21:04:52.203Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1761426292203584
[2025-10-25T21:04:52.204Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1761426292204012
[2025-10-25T21:04:52.205Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> detect device family msg.target="nrf_probe::device_operations::detect_device" time_stamp=1761426292205334
[2025-10-25T21:04:52.205Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- detect device family msg.target="nrf_probe::device_operations::detect_device" time_stamp=1761426292205541
[2025-10-25T21:04:52.211Z] [20897] INFO - [nrf_probe::probe_pool] execute_inner; request=Recover { core_id: Application, erase_protect_key: None } response_timeout=20s
[2025-10-25T21:04:52.211Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering down debug region msg.target="nrf_probe::probe_state" time_stamp=1761426292211971
[2025-10-25T21:04:52.215Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering down debug region msg.target="nrf_probe::probe_state" time_stamp=1761426292215756
[2025-10-25T21:04:52.216Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1761426292216361
[2025-10-25T21:04:52.216Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1761426292216740
[2025-10-25T21:04:52.216Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> recover msg.target="nrf_probe::device_operations::recover" time_stamp=1761426292216781
[2025-10-25T21:04:53.309Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Create core msg.target="nrf_probe::core" time_stamp=1761426293308990
[2025-10-25T21:04:53.347Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Create core msg.target="nrf_probe::core" time_stamp=1761426293347324
[2025-10-25T21:04:53.351Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} Programming 2 segments msg.target="nrf_probe::device_operations::programming" time_stamp=1761426293351054
[2025-10-25T21:04:53.425Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} Verifying 2 segments msg.target="nrf_probe::device_operations::programming" time_stamp=1761426293425835
[2025-10-25T21:04:53.464Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} Verification succeeded msg.target="nrf_probe::device_operations::programming" time_stamp=1761426293464693
[2025-10-25T21:04:53.465Z] [20897] WARN - [nrf_probe::probe_pool] {jlink_usb_001050324898} No secure access to AP 0 allowed, masking secure address bit from 0x40000400. Accesses to this address might fail! msg.target="nrf_probe::probe_state" time_stamp=1761426293465344
[2025-10-25T21:04:53.483Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- recover msg.target="nrf_probe::device_operations::recover" time_stamp=1761426293483621
[2025-10-25T21:04:53.483Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering down debug region msg.target="nrf_probe::probe_state" time_stamp=1761426293483639
[2025-10-25T21:04:53.502Z] [20897] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering down debug region msg.target="nrf_probe::probe_state" time_stamp=1761426293502814
[2025-10-25T21:04:53.503Z] [20897] INFO - [nrf_probe::probe_pool] Dropping Probe; self.connection=JLink(Usb(JLinkSerialNumber(1050324898)))
[2025-10-25T21:04:53.527Z] [20897] INFO - [nrf_probe::probe_pool] Worker exited successfully
[2025-10-26T08:26:20.012Z] [32591] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-26T08:26:20.022Z] [32591] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-26T08:36:38.651Z] [33162] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-26T08:36:38.662Z] [33162] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-26T13:35:55.224Z] [49414] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-26T13:35:55.237Z] [49414] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-26T13:48:20.893Z] [50562] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-26T13:48:20.906Z] [50562] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-26T13:51:25.394Z] [50798] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-26T13:51:25.400Z] [50798] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-26T13:51:32.558Z] [50941] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-26T13:51:32.569Z] [50941] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-26T14:03:39.614Z] [53187] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-26T14:03:39.626Z] [53187] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-26T14:43:54.238Z] [63071] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-26T14:43:54.252Z] [63071] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-26T19:37:09.114Z] [78494] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-26T19:37:09.126Z] [78494] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-27T12:30:25.185Z] [3705] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-27T12:30:25.199Z] [3705] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-27T21:19:25.005Z] [19462] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-27T21:19:25.023Z] [19462] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-27T21:34:30.834Z] [20868] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-27T21:34:30.860Z] [20868] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-27T22:15:24.507Z] [36081] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-27T22:15:24.527Z] [36081] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T18:18:33.165Z] [74458] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T18:18:33.187Z] [74458] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T18:28:38.502Z] [75613] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T18:28:38.513Z] [75613] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T18:37:52.813Z] [77892] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T18:37:52.824Z] [77892] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T18:38:10.446Z] [78135] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T18:38:10.453Z] [78135] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T18:56:35.085Z] [80318] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T18:56:35.096Z] [80318] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T18:57:06.445Z] [80458] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T18:57:06.452Z] [80458] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T19:40:38.439Z] [89972] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T19:40:38.451Z] [89972] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T19:41:21.204Z] [90138] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T19:41:21.211Z] [90138] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T19:57:37.426Z] [97575] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T19:57:37.438Z] [97575] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T19:59:07.060Z] [97869] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T19:59:07.067Z] [97869] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-28T20:00:32.990Z] [98439] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-28T20:00:32.997Z] [98439] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T13:53:56.000Z] [15577] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T13:53:56.016Z] [15577] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T13:55:22.338Z] [15978] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T13:55:22.351Z] [15978] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T14:38:32.642Z] [21038] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T14:38:32.653Z] [21038] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T14:38:43.006Z] [21126] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T14:38:43.021Z] [21126] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T15:06:41.087Z] [23584] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T15:06:41.100Z] [23584] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T15:08:20.109Z] [24048] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T15:08:20.115Z] [24048] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T15:13:49.166Z] [26214] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T15:13:49.178Z] [26214] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T15:32:40.722Z] [28771] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T15:32:40.735Z] [28771] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T15:33:15.454Z] [28989] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T15:33:15.466Z] [28989] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-29T16:15:46.267Z] [37610] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-29T16:15:46.279Z] [37610] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-30T18:03:28.902Z] [95587] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-30T18:03:28.917Z] [95587] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-30T18:03:32.976Z] [95967] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-30T18:03:32.987Z] [95967] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-30T18:03:46.654Z] [96332] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-30T18:03:46.664Z] [96332] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-10-30T19:21:01.001Z] [6055] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-10-30T19:21:01.013Z] [6055] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-01T08:25:44.182Z] [72504] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-01T08:25:44.200Z] [72504] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-01T08:26:18.772Z] [73027] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-01T08:26:18.783Z] [73027] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-01T19:47:54.216Z] [94055] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-01T19:47:54.229Z] [94055] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-01T19:48:09.048Z] [94147] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-01T19:48:09.054Z] [94147] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-01T19:48:29.152Z] [94715] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-01T19:48:29.161Z] [94715] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-01T19:49:00.569Z] [97165] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-01T19:49:00.575Z] [97165] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-01T20:19:23.823Z] [2092] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-01T20:19:23.836Z] [2092] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-01T20:20:08.551Z] [2607] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-01T20:20:08.558Z] [2607] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-02T08:31:09.139Z] [31857] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-02T08:31:09.164Z] [31857] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-02T18:29:39.527Z] [51683] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-02T18:29:39.541Z] [51683] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-02T18:29:42.999Z] [53579] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-02T18:29:43.006Z] [53579] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-02T18:29:54.333Z] [54195] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-02T18:29:54.341Z] [54195] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:13:22.959Z] [70915] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-03T12:13:22.973Z] [70915] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:44:18.667Z] [72929] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with list 
[2025-11-03T12:44:18.668Z] [72929] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 72928
[2025-11-03T12:44:18.684Z] [72929] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:44:18.688Z] [72929] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:44:18.688Z] [72929] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-11-03T12:51:55.968Z] [74100] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-03T12:51:55.982Z] [74100] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:51:56.707Z] [74335] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-03T12:51:56.772Z] [74335] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:54:00.259Z] [77467] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with list 
[2025-11-03T12:54:00.260Z] [77467] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 77466
[2025-11-03T12:54:00.273Z] [77467] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:54:00.283Z] [77467] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:54:00.283Z] [77467] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-11-03T12:58:18.404Z] [78451] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --version 
[2025-11-03T12:58:18.417Z] [78451] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:59:49.558Z] [78687] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --version 
[2025-11-03T12:59:49.570Z] [78687] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:59:51.079Z] [78695] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with list 
[2025-11-03T12:59:51.080Z] [78695] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 78694
[2025-11-03T12:59:51.092Z] [78695] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:59:51.098Z] [78695] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T12:59:51.098Z] [78695] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-11-03T13:16:10.583Z] [80517] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with list 
[2025-11-03T13:16:10.584Z] [80517] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 80516
[2025-11-03T13:16:10.598Z] [80517] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T13:16:10.602Z] [80517] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T13:16:10.602Z] [80517] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-11-03T13:16:13.967Z] [80522] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --version 
[2025-11-03T13:16:13.979Z] [80522] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T14:58:18.919Z] [83266] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --version 
[2025-11-03T14:58:18.931Z] [83266] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T14:58:22.979Z] [83273] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with list 
[2025-11-03T14:58:22.980Z] [83273] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 83272
[2025-11-03T14:58:22.990Z] [83273] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T14:58:22.992Z] [83273] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T14:58:22.992Z] [83273] INFO - [jlink::backend] Found 0 attached J-Link devices
[2025-11-03T14:59:39.097Z] [83323] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with list 
[2025-11-03T14:59:39.097Z] [83323] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 83322
[2025-11-03T14:59:39.106Z] [83323] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T14:59:39.111Z] [83323] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-03T14:59:39.112Z] [83323] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-11-03T14:59:41.885Z] [83328] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --version 
[2025-11-03T14:59:41.898Z] [83328] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-04T06:47:16.455Z] [88864] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with 
[2025-11-04T06:47:16.456Z] [88864] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 88863
[2025-11-04T06:48:26.364Z] [88946] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-04T06:48:26.380Z] [88946] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-04T06:48:44.846Z] [89069] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-04T06:48:44.857Z] [89069] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-04T06:48:49.236Z] [89223] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-04T06:48:49.251Z] [89223] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-04T08:37:17.203Z] [92577] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-04T08:37:17.227Z] [92577] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-04T14:39:28.988Z] [16377] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-04T14:39:29.008Z] [16377] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-04T20:18:37.512Z] [29185] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-04T20:18:37.534Z] [29185] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-04T20:19:05.141Z] [29955] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-04T20:19:05.161Z] [29955] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-04T21:18:03.833Z] [44533] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-04T21:18:03.847Z] [44533] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-04T21:19:20.957Z] [44964] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-04T21:19:20.972Z] [44964] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T18:07:53.029Z] [78149] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with recover 
[2025-11-05T18:07:53.030Z] [78149] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 78148
[2025-11-05T18:07:53.044Z] [78149] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T18:07:53.047Z] [78149] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T18:07:53.048Z] [78149] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-11-05T18:07:53.051Z] [78149] INFO - [nrf_probe::probe_pool] Creating Probe; connection=JLink(Usb(JLinkSerialNumber(1050324898))) initialize_timeout=40s worker_timeout=20s log_option=Forward
[2025-11-05T18:07:53.057Z] [78149] INFO - [tracing::span] worker supervisor;
[2025-11-05T18:07:53.362Z] [78149] INFO - [nrf_probe::probe_pool] Handshake signatures match
[2025-11-05T18:07:53.362Z] [78149] INFO - [nrf_probe::probe_pool] Connection with Probe worker established. time_stamp=1762366073362868
[2025-11-05T18:07:53.363Z] [78149] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} nrf-probe version 0.48.0 msg.target="nrf_probe::probe_pool::worker" time_stamp=1762366073349971
[2025-11-05T18:07:53.391Z] [78149] INFO - [nrf_probe::probe_pool] execute_inner; request=DetectDeviceInformation { use_cache: true } response_timeout=20s
[2025-11-05T18:07:53.493Z] [78149] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366073493354
[2025-11-05T18:07:53.494Z] [78149] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366073494934
[2025-11-05T18:07:53.495Z] [78149] ERROR - [probe] Failed to read the device information when setting up default external flash configuration. This is not critical, ignoring this error to allow the next operation to run, but we will probably hit it again on the next operation. The full error was: Device error: Setting the debug port SELECT register failed while powering up sys and debug regions (Unknown Error in J-Link DLL (error code =-1)).

This might indicate that the debug port is unavailable. Please double-check device power supply and SWD lines, and that SWD isn't disabled
[2025-11-05T18:07:53.495Z] [78149] INFO - [nrf_probe::probe_pool] execute_inner; request=Recover { core_id: Application, erase_protect_key: None } response_timeout=20s
[2025-11-05T18:07:53.600Z] [78149] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366073600087
[2025-11-05T18:07:53.601Z] [78149] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366073601805
[2025-11-05T18:07:53.601Z] [78149] INFO - [nrf_probe::probe_pool] Dropping Probe; self.connection=JLink(Usb(JLinkSerialNumber(1050324898)))
[2025-11-05T18:07:53.642Z] [78149] INFO - [nrf_probe::probe_pool] Worker exited successfully
[2025-11-05T18:08:19.718Z] [78158] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with recover 
[2025-11-05T18:08:19.718Z] [78158] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 78157
[2025-11-05T18:08:19.736Z] [78158] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T18:08:19.739Z] [78158] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T18:08:19.740Z] [78158] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-11-05T18:08:19.743Z] [78158] INFO - [nrf_probe::probe_pool] Creating Probe; connection=JLink(Usb(JLinkSerialNumber(1050324898))) initialize_timeout=40s worker_timeout=20s log_option=Forward
[2025-11-05T18:08:19.744Z] [78158] INFO - [tracing::span] worker supervisor;
[2025-11-05T18:08:19.756Z] [78158] INFO - [nrf_probe::probe_pool] Handshake signatures match
[2025-11-05T18:08:19.756Z] [78158] INFO - [nrf_probe::probe_pool] Connection with Probe worker established. time_stamp=1762366099756799
[2025-11-05T18:08:19.756Z] [78158] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} nrf-probe version 0.48.0 msg.target="nrf_probe::probe_pool::worker" time_stamp=1762366099749870
[2025-11-05T18:08:19.780Z] [78158] INFO - [nrf_probe::probe_pool] execute_inner; request=DetectDeviceInformation { use_cache: true } response_timeout=20s
[2025-11-05T18:08:19.882Z] [78158] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366099882495
[2025-11-05T18:08:19.883Z] [78158] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366099883970
[2025-11-05T18:08:19.884Z] [78158] ERROR - [probe] Failed to read the device information when setting up default external flash configuration. This is not critical, ignoring this error to allow the next operation to run, but we will probably hit it again on the next operation. The full error was: Device error: Setting the debug port SELECT register failed while powering up sys and debug regions (Unknown Error in J-Link DLL (error code =-1)).

This might indicate that the debug port is unavailable. Please double-check device power supply and SWD lines, and that SWD isn't disabled
[2025-11-05T18:08:19.884Z] [78158] INFO - [nrf_probe::probe_pool] execute_inner; request=Recover { core_id: Application, erase_protect_key: None } response_timeout=20s
[2025-11-05T18:08:19.987Z] [78158] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366099987506
[2025-11-05T18:08:19.989Z] [78158] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366099989234
[2025-11-05T18:08:19.989Z] [78158] INFO - [nrf_probe::probe_pool] Dropping Probe; self.connection=JLink(Usb(JLinkSerialNumber(1050324898)))
[2025-11-05T18:08:20.029Z] [78158] INFO - [nrf_probe::probe_pool] Worker exited successfully
[2025-11-05T18:10:08.372Z] [78295] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with recover 
[2025-11-05T18:10:08.373Z] [78295] INFO - [nrfutil_device::watch] Starting parent process watchdog, current parent process ID: 78294
[2025-11-05T18:10:08.385Z] [78295] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T18:10:08.389Z] [78295] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T18:10:08.389Z] [78295] INFO - [jlink::backend] Found 1 attached J-Link devices
[2025-11-05T18:10:08.393Z] [78295] INFO - [nrf_probe::probe_pool] Creating Probe; connection=JLink(Usb(JLinkSerialNumber(1050324898))) initialize_timeout=40s worker_timeout=20s log_option=Forward
[2025-11-05T18:10:08.395Z] [78295] INFO - [tracing::span] worker supervisor;
[2025-11-05T18:10:08.420Z] [78295] INFO - [nrf_probe::probe_pool] Handshake signatures match
[2025-11-05T18:10:08.420Z] [78295] INFO - [nrf_probe::probe_pool] Connection with Probe worker established. time_stamp=1762366208420915
[2025-11-05T18:10:08.421Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} nrf-probe version 0.48.0 msg.target="nrf_probe::probe_pool::worker" time_stamp=1762366208408263
[2025-11-05T18:10:08.443Z] [78295] INFO - [nrf_probe::probe_pool] execute_inner; request=DetectDeviceInformation { use_cache: true } response_timeout=20s
[2025-11-05T18:10:08.444Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366208444294
[2025-11-05T18:10:08.444Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366208444934
[2025-11-05T18:10:08.446Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> detect device family msg.target="nrf_probe::device_operations::detect_device" time_stamp=1762366208446195
[2025-11-05T18:10:08.446Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- detect device family msg.target="nrf_probe::device_operations::detect_device" time_stamp=1762366208446437
[2025-11-05T18:10:08.452Z] [78295] INFO - [nrf_probe::probe_pool] execute_inner; request=Recover { core_id: Application, erase_protect_key: None } response_timeout=20s
[2025-11-05T18:10:08.452Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering down debug region msg.target="nrf_probe::probe_state" time_stamp=1762366208452460
[2025-11-05T18:10:08.456Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering down debug region msg.target="nrf_probe::probe_state" time_stamp=1762366208456191
[2025-11-05T18:10:08.456Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366208456766
[2025-11-05T18:10:08.457Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering up sys and debug region msg.target="nrf_probe::probe_state" time_stamp=1762366208457110
[2025-11-05T18:10:08.457Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> recover msg.target="nrf_probe::device_operations::recover" time_stamp=1762366208457124
[2025-11-05T18:10:09.553Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Create core msg.target="nrf_probe::core" time_stamp=1762366209553529
[2025-11-05T18:10:09.593Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Create core msg.target="nrf_probe::core" time_stamp=1762366209593803
[2025-11-05T18:10:09.593Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- recover msg.target="nrf_probe::device_operations::recover" time_stamp=1762366209593834
[2025-11-05T18:10:09.593Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} -> Powering down debug region msg.target="nrf_probe::probe_state" time_stamp=1762366209593842
[2025-11-05T18:10:09.597Z] [78295] INFO - [nrf_probe::probe_pool] {jlink_usb_001050324898} <- Powering down debug region msg.target="nrf_probe::probe_state" time_stamp=1762366209597855
[2025-11-05T18:10:09.597Z] [78295] INFO - [nrf_probe::probe_pool] Dropping Probe; self.connection=JLink(Usb(JLinkSerialNumber(1050324898)))
[2025-11-05T18:10:09.623Z] [78295] INFO - [nrf_probe::probe_pool] Worker exited successfully
[2025-11-05T18:11:23.707Z] [78910] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-05T18:11:23.707Z] [78909] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-05T18:11:23.735Z] [78909] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T18:11:23.736Z] [78910] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T18:11:44.173Z] [83454] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-05T18:11:44.180Z] [83454] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T19:06:15.843Z] [86133] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-05T19:06:15.858Z] [86133] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T19:06:26.972Z] [86247] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-05T19:06:26.979Z] [86247] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T19:27:53.543Z] [87552] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-05T19:27:53.554Z] [87552] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-05T19:28:17.493Z] [88250] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-05T19:28:17.509Z] [88250] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-06T18:01:45.726Z] [15636] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-06T18:01:45.734Z] [15636] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-06T18:01:50.289Z] [15739] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-06T18:01:50.301Z] [15739] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-06T18:01:52.551Z] [16017] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-06T18:01:52.565Z] [16017] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80
[2025-11-06T18:01:56.430Z] [16642] INFO - [nrfutil_common::logger] nrfutil-device (version = 2.15.1, platform = aarch64-apple-darwin, classification = nrf-external) invoked with --json --skip-overhead --version 
[2025-11-06T18:01:56.450Z] [16642] INFO - [jlink::backend] Opened J-Link DLL at /Applications/SEGGER/JLink/libjlinkarm.dylib with version 8.80

    Starting flash is erasing flash successfully I can not see my device on scan result after flash.

  • 0 in reply to AhmetSafi
    AhmetSafi said:
    Starting flash is erasing flash successfully I can not see my device on scan result after flash.

    Are you able to flash the image without issue now? If so, maybe you should check the device log or test the project on the nRF52DK.  

  • 0 in reply to Amanda Hsieh

    Hi,

    No, I cannot flash the image via west — only ST-Link is working. Thank you for your time and support. I’ve decided to stick with ST-Link, as I also found out that I can use RTT via Telnet to view the “LOG_INF” outputs. I believe I can complete my project using OpenOCD.

    Best regards,

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