nrf5340 2.6 to 2.9 migration issues

RE: nrf5340 2.6 to 2.9 migration issues

IvanR — Fri, 31 Oct 2025 10:46:00 GMT

managed to solve issue. mostly it was because configs were in child_image and not in sysbuild folder.

RE: nrf5340 2.6 to 2.9 migration issues

IvanR — Thu, 30 Oct 2025 09:06:22 GMT

Same line.

EDIT: This is from current. Will try with older version.
EDIT2: Ran the command on older working code that boots up and everything works and got the same response.

EDIT3: Please note that older version does not use external flash!

ﲖ nrfjprog --memrd 0x10000000 --n 0x100 -f nrf53
[ #################### ] 0.000s | Reading external memory, 0x0100 bytes @ 0x00000000 - Done
0x10000000: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000010: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000020: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000030: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000040: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000050: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000060: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000070: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000080: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x10000090: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000A0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000B0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000C0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000D0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000E0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|
0x100000F0: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF |................|

RE: nrf5340 2.6 to 2.9 migration issues

Vidar Berg — Thu, 30 Oct 2025 08:02:30 GMT

Need more details and debug information to be able speculate on what the issue could be. When you tried the other boards, did you confirm that the program got stuck at the same line? And were you able to interface with the onboard flash when using in the previous version of your project? And are you able to read from the external flash by using the debugger? For example with nrfjprog : nrfjprog --memrd 0x10000000 --n 0x100 -f nrf53.

RE: nrf5340 2.6 to 2.9 migration issues

IvanR — Thu, 30 Oct 2025 07:16:52 GMT

any idea how to resolve this ? Ive tried it on 6 different boards and its not the flash issue, that is hardware issue.

RE: nrf5340 2.6 to 2.9 migration issues

Vidar Berg — Wed, 29 Oct 2025 12:29:01 GMT

It's failing here because it failed to open the external flash area: https://github.com/nrfconnect/sdk-mcuboot/blob/v2.1.0-ncs3-2/boot/bootutil/src/loader.c#L2694.

RE: nrf5340 2.6 to 2.9 migration issues

IvanR — Wed, 29 Oct 2025 12:19:40 GMT

The flash on custom board is MX25r6435.

JLinkGDBServerCL: SEGGER J-Link GDB Server V7.88j Command Line Version
JLinkGDBServerCL:
JLinkGDBServerCL: JLinkARM.dll V7.88j (DLL compiled Jun 28 2023 13:39:15)
JLinkGDBServerCL:
JLinkGDBServerCL: -----GDB Server start settings-----
JLinkGDBServerCL: GDBInit file: none
JLinkGDBServerCL: GDB Server Listening port: 50555
JLinkGDBServerCL: SWO raw output listening port: 2332
JLinkGDBServerCL: Terminal I/O port: 2333
JLinkGDBServerCL: Accept remote connection: localhost only
JLinkGDBServerCL: Generate logfile: off
JLinkGDBServerCL: Verify download: off
JLinkGDBServerCL: Init regs on start: off
JLinkGDBServerCL: Silent mode: on
JLinkGDBServerCL: Single run mode: on
JLinkGDBServerCL: Target connection timeout: 0 ms
JLinkGDBServerCL: ------J-Link related settings------
JLinkGDBServerCL: J-Link Host interface: USB
JLinkGDBServerCL: J-Link script: none
JLinkGDBServerCL: J-Link settings file: none
JLinkGDBServerCL: ------Target related settings------
JLinkGDBServerCL: Target device: nrf5340_xxaa_app
JLinkGDBServerCL: Target device parameters: none
JLinkGDBServerCL: Target interface: SWD
JLinkGDBServerCL: Target interface speed: 4000kHz
JLinkGDBServerCL: Target endian: little
JLinkGDBServerCL:
=thread-group-added,id="i1"
=cmd-param-changed,param="pagination",value="off"
context_boot_go (state=state@entry=0x20003624 <boot_data>, rsp=rsp@entry=0x2004815c <z_main_stack+36124>) at C:/ncs/v2.9.0/bootloader/mcuboot/boot/bootutil/src/loader.c:2694
2694 FIH_PANIC;
[New Remote target]
[New Thread 2645248]
[New Thread -1]

RE: nrf5340 2.6 to 2.9 migration issues

Vidar Berg — Wed, 29 Oct 2025 10:57:31 GMT

I suggest you try to debug your application in VS code and see if the program hangs in the bootloader or application. Does your custom board have the exact same QSPI FLASH IC as the DK? MCUBoot will not boot the application if communication with the external flash fails (current configuration has the secondary mcuboot slot in placed in this flash).

RE: nrf5340 2.6 to 2.9 migration issues

IvanR — Wed, 29 Oct 2025 10:16:18 GMT

Thank you,I will keep in mind the migration documentation,
it compiles but device wont turn on, no usb, cant see whats happening on it. :(
Its on custom board that is programed using SWD pins (I need to emphasize that it worked for months before this, situation).
Ive added

CONFIG_USB_CDC_ACM=y

CONFIG_SERIAL=y

CONFIG_UART_CONSOLE=y

prior it was enough to just

BUILD_ASSERT(DT_NODE_HAS_COMPAT(DT_CHOSEN(zephyr_console), zephyr_cdc_acm_uart), "Console device is not ACM CDC UART device");
an have it defined in overlay. As I have a simplified version of current device that is on 2.6 and USB, "just works". I can printk to it.

RE: nrf5340 2.6 to 2.9 migration issues

Vidar Berg — Wed, 29 Oct 2025 08:22:04 GMT

I've update some of the configurations to sysbuild, please review the changes. I also recommend reading the migration document here https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/migration/migration_sysbuild.html and this devacademy course https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-8-sysbuild/

devzone.nordicsemi.com/.../new_5F00_folder.zip

RE: nrf5340 2.6 to 2.9 migration issues

IvanR — Wed, 29 Oct 2025 07:19:56 GMT

devzone.nordicsemi.com/.../2308.New-folder.zip

Thank you !

RE: nrf5340 2.6 to 2.9 migration issues

Vidar Berg — Tue, 28 Oct 2025 10:53:07 GMT

Hi,

Are you able to share a minimal version of your project that will allow me to review the configuration reproduce this booting issue on a nRF5340 DK board? If not, please provide as much relevant information as you can. For example, the complete build output showing the build errors and the project configuration file (prj.conf, sysbuild.conf, etc).

Best regards,

Vidar