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Buttonless DFU update failed

Hi,

When I do a secure DFU (screen dumps pasted ), it failed with error code 0x8005. It worked on WIndows 7 PC.

//==================Linux System Report

# nRFConnect System Report - 2020-04-27T21-48-24.040Z

- System: Dell Inc. Precision 7520
- BIOS: Dell Inc. 1.5.1
- CPU: 1 x IntelRegistered CoreTm i7-7700HQ 2.80 GHz 8 cores (4 physical)
- Memory: 412.1 MB free of 7.6 GB total
- Filesystem: /dev/nvme0n1p3 (ext4) 215.7 GB 78.8% used

- OS: Ubuntu (16.04.6 LTS) linux x64

- Versions
- kernel: 4.4.0-112-generic
- git: 2.7.4
- node: 12.0.0
- python: 2.7.12
- python3: 3.5.2

//===============================

JLink version installed:    JLink_Linux_V671a_x86_64

nRfConnect:      nrfconnect331x8664

Start SecDFU:  command screen dumps:

Please help,

David Zhou

Parents
  • Hi David,

    I do not have any immediate idea about what the problem is. Can you upload the full log from nRF Connect BLE? You ill find it using a button above the log output window, as shown here:

    Do you also have a log from the nRF side (using the _debug bootloader with RTT logging)?

    Einar

  • Hi Einar,

    I pasted output messages from nRFConnect App:

    14:31:52.596 Application data folder: /home/dzhou/.config/nrfconnect/pc-nrfconnect-ble
    14:31:56.805 Validating connectivity firmware for device with serial number 000683452784...
    14:32:01.790 Connectivity firmware is valid.
    14:32:01.792 Note: Adapters with Segger JLink debug probe requires MSD to be disabled to function properly on MacOS and Linux. Please visit www.nordicsemi.com/nRFConnectOSXfix for further instructions.
    14:32:01.792 Getting information from J-Link debugger...
    14:32:07.825 Found device type: unknown. J-Link firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 17 2020 14:43:00.
    14:32:07.825 Connectivity firmware version: 4.1.1. SoftDevice API version: 3. Baud rate: 1000000.
    14:32:07.828 Opening adapter connected to /dev/ttyACM0
    14:32:08.777 Successfully opened /dev/ttyACM0. Baud rate: 1000000. Flow control: none. Parity: none.
    14:32:08.780 Reset performed on adapter /dev/ttyACM0
    14:32:09.858 Adapter connected to /dev/ttyACM0 opened
    14:32:10.945 Scan started
    14:32:16.009 Scan stopped
    14:32:17.639 Scan started
    14:32:20.741 Connecting to device
    14:32:20.908 Connected to device CA:CB:86:2A:F2:6D
    14:32:21.282 Attribute value read, handle: 0x03, value (0x): 53-5F-44-46-55-76-30
    14:32:25.948 Connection parameters updated for device CA:CB:86:2A:F2:6D: interval 100ms, timeout 4000ms, latency: 0
    14:33:00.135 Disconnected from device CA:CB:86:2A:F2:6D, reason: undefined
    14:33:00.140 Performing DFU with file: /media/dzhou/Data/AssetTracking/Drill/Frc_DFU/frc_dfu_1.zip
    14:33:03.957 Attribute value changed, handle: 0x11, value (0x): 02-00
    14:33:04.156 Attribute value changed, handle: 0x10, value (0x): 01
    14:33:04.161 Attribute value changed, handle: 0x10, value (0x): 20-01-01
    14:33:09.444 Attribute value changed, handle: 0x10, value (0x): 01-00
    14:33:09.474 Attribute value changed, handle: 0x0F, value (0x): 02-00-00
    14:33:09.477 Attribute value changed, handle: 0x0F, value (0x): 60-02-01
    14:33:09.579 Attribute value changed, handle: 0x0F, value (0x): 06-01
    14:33:09.597 Attribute value changed, handle: 0x0F, value (0x): 60-06-01-00-02-00-00-00-00-00-00-00-00-00-00
    14:33:09.624 Attribute value changed, handle: 0x0F, value (0x): 01-01-8D-00-00-00
    14:33:09.626 Attribute value changed, handle: 0x0F, value (0x): 60-01-01
    14:33:11.157 Received status with code 4 Unknown value, message: 'Error sending packet to target. Code: 0x802a'
    14:33:11.191 Attribute value changed, handle: 0x0F, value (0x): 01-01-8D-00-00-00
    14:33:11.192 Attribute value changed, handle: 0x0F, value (0x): 60-01-01
    14:33:12.698 Received status with code 4 Unknown value, message: 'Error sending packet to target. Code: 0x802a'
    14:33:12.740 Attribute value changed, handle: 0x0F, value (0x): 01-01-8D-00-00-00
    14:33:12.742 Attribute value changed, handle: 0x0F, value (0x): 60-01-01
    14:33:14.248 DFU failed with error: When writing data to DFU Packet Characteristic on DFU Target: Failed to write to attribute with handle: 13: Error occured when writing. Errorcode: Unknown value (0x8005) .
    14:33:14.262 Received status with code 4 Unknown value, message: 'Error sending packet to target. Code: 0x802a'

    Thank you,

    David

Reply
  • Hi Einar,

    I pasted output messages from nRFConnect App:

    14:31:52.596 Application data folder: /home/dzhou/.config/nrfconnect/pc-nrfconnect-ble
    14:31:56.805 Validating connectivity firmware for device with serial number 000683452784...
    14:32:01.790 Connectivity firmware is valid.
    14:32:01.792 Note: Adapters with Segger JLink debug probe requires MSD to be disabled to function properly on MacOS and Linux. Please visit www.nordicsemi.com/nRFConnectOSXfix for further instructions.
    14:32:01.792 Getting information from J-Link debugger...
    14:32:07.825 Found device type: unknown. J-Link firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 17 2020 14:43:00.
    14:32:07.825 Connectivity firmware version: 4.1.1. SoftDevice API version: 3. Baud rate: 1000000.
    14:32:07.828 Opening adapter connected to /dev/ttyACM0
    14:32:08.777 Successfully opened /dev/ttyACM0. Baud rate: 1000000. Flow control: none. Parity: none.
    14:32:08.780 Reset performed on adapter /dev/ttyACM0
    14:32:09.858 Adapter connected to /dev/ttyACM0 opened
    14:32:10.945 Scan started
    14:32:16.009 Scan stopped
    14:32:17.639 Scan started
    14:32:20.741 Connecting to device
    14:32:20.908 Connected to device CA:CB:86:2A:F2:6D
    14:32:21.282 Attribute value read, handle: 0x03, value (0x): 53-5F-44-46-55-76-30
    14:32:25.948 Connection parameters updated for device CA:CB:86:2A:F2:6D: interval 100ms, timeout 4000ms, latency: 0
    14:33:00.135 Disconnected from device CA:CB:86:2A:F2:6D, reason: undefined
    14:33:00.140 Performing DFU with file: /media/dzhou/Data/AssetTracking/Drill/Frc_DFU/frc_dfu_1.zip
    14:33:03.957 Attribute value changed, handle: 0x11, value (0x): 02-00
    14:33:04.156 Attribute value changed, handle: 0x10, value (0x): 01
    14:33:04.161 Attribute value changed, handle: 0x10, value (0x): 20-01-01
    14:33:09.444 Attribute value changed, handle: 0x10, value (0x): 01-00
    14:33:09.474 Attribute value changed, handle: 0x0F, value (0x): 02-00-00
    14:33:09.477 Attribute value changed, handle: 0x0F, value (0x): 60-02-01
    14:33:09.579 Attribute value changed, handle: 0x0F, value (0x): 06-01
    14:33:09.597 Attribute value changed, handle: 0x0F, value (0x): 60-06-01-00-02-00-00-00-00-00-00-00-00-00-00
    14:33:09.624 Attribute value changed, handle: 0x0F, value (0x): 01-01-8D-00-00-00
    14:33:09.626 Attribute value changed, handle: 0x0F, value (0x): 60-01-01
    14:33:11.157 Received status with code 4 Unknown value, message: 'Error sending packet to target. Code: 0x802a'
    14:33:11.191 Attribute value changed, handle: 0x0F, value (0x): 01-01-8D-00-00-00
    14:33:11.192 Attribute value changed, handle: 0x0F, value (0x): 60-01-01
    14:33:12.698 Received status with code 4 Unknown value, message: 'Error sending packet to target. Code: 0x802a'
    14:33:12.740 Attribute value changed, handle: 0x0F, value (0x): 01-01-8D-00-00-00
    14:33:12.742 Attribute value changed, handle: 0x0F, value (0x): 60-01-01
    14:33:14.248 DFU failed with error: When writing data to DFU Packet Characteristic on DFU Target: Failed to write to attribute with handle: 13: Error occured when writing. Errorcode: Unknown value (0x8005) .
    14:33:14.262 Received status with code 4 Unknown value, message: 'Error sending packet to target. Code: 0x802a'

    Thank you,

    David

Children
  • Einar,

    It worked on Android Phone. I pasted log messages:

    //======================================================

    - Device Name [R W] (0x2A00)
    - Appearance [R] (0x2A01)
    - Peripheral Preferred Connection Parameters [R] (0x2A04)
    - Central Address Resolution [R] (0x2AA6)
    Generic Attribute (0x1801)
    - Service Changed [I] (0x2A05)
       Client Characteristic Configuration (0x2902)
    Secure DFU Service (0xFE59)
    - Buttonless DFU [I W] (8ec90003-f315-4f60-9fb8-838830daea50)
       Client Characteristic Configuration (0x2902)
    D 18:25:52.578 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true)
    I 18:25:52.625 Connection parameters updated (interval: 48.75ms, latency: 0, timeout: 5000ms)
    I 18:25:57.172 Connection parameters updated (interval: 198.75ms, latency: 0, timeout: 4000ms)
    V 18:28:27.131 [DFU] DFU service started
    V 18:28:27.131 [DFU] Opening file...
    I 18:28:27.165 [DFU] Firmware file opened successfully
    V 18:28:27.165 [DFU] Connecting to DFU target...
    D 18:28:27.167 [DFU] gatt = device.connectGatt(autoConnect = false)
    I 18:28:27.171 [DFU] Connected to CA:CB:86:2A:F2:6D
    V 18:28:27.172 [DFU] Discovering services...
    D 18:28:27.172 [DFU] gatt.discoverServices()
    I 18:28:27.175 [DFU] Services discovered
    D 18:28:27.198 [DFU] wait(1000)
    W 18:28:28.213 [DFU] Application with buttonless update found
    V 18:28:28.213 [DFU] Jumping to the DFU Bootloader...
    V 18:28:28.213 [DFU] Enabling indications for 8ec90003-f315-4f60-9fb8-838830daea50
    D 18:28:28.213 [DFU] gatt.setCharacteristicNotification(8ec90003-f315-4f60-9fb8-838830daea50, true)
    D 18:28:28.213 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x02-00)
    I 18:28:28.576 [DFU] Data written to descr.8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 02-00
    V 18:28:28.576 [DFU] Notifications enabled for 8ec90003-f315-4f60-9fb8-838830daea50
    A 18:28:28.576 [DFU] Indications enabled
    D 18:28:28.576 [DFU] wait(1000)
    V 18:28:29.588 [DFU] Writing to characteristic 8ec90003-f315-4f60-9fb8-838830daea50
    D 18:28:29.588 [DFU] gatt.writeCharacteristic(8ec90003-f315-4f60-9fb8-838830daea50)
    A 18:28:29.967 [DFU] Enter bootloader sent (Op Code = 1)
    I 18:28:29.969 [DFU] Notification received from 8ec90003-f315-4f60-9fb8-838830daea50, value (0x): 20-01-01
    A 18:28:29.969 [DFU] Response received (Op Code = 1, Status = 1)
    D 18:28:34.181 [Callback] Connection state changed with status: 8 and new state: DISCONNECTED (0)
    E 18:28:34.181 Error 8 (0x8): GATT CONN TIMEOUT
    I 18:28:34.181 Disconnected
    I 18:28:34.183 [DFU] Disconnected by the remote device
    D 18:28:34.216 [DFU] gatt.refresh() (hidden)
    D 18:28:34.216 [DFU] gatt.close()
    V 18:28:34.216 [DFU] Scanning for the DFU Bootloader...
    D 18:28:34.217 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED
    D 18:28:34.231 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED
    I 18:28:34.307 [DFU] DFU Bootloader found with address CA:CB:86:2A:F2:6E
    V 18:28:34.318 [DFU] DFU service started
    I 18:28:34.322 [DFU] Firmware file opened successfully
    D 18:28:34.322 [DFU] wait(1000)
    D 18:28:35.323 [DFU] wait(1000)
    V 18:28:36.347 [DFU] Connecting to DFU target...
    D 18:28:36.348 [DFU] gatt = device.connectGatt(autoConnect = false)
    I 18:28:36.668 [DFU] Connected to CA:CB:86:2A:F2:6E
    V 18:28:36.668 [DFU] Discovering services...
    D 18:28:36.668 [DFU] gatt.discoverServices()
    D 18:28:36.669 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED
    I 18:28:37.217 [DFU] Services discovered
    D 18:28:37.241 [DFU] wait(1000)
    V 18:28:38.226 [DFU] Requesting new MTU...
    D 18:28:38.226 [DFU] gatt.requestMtu(517)
    I 18:28:38.255 [DFU] MTU changed to: 247
    V 18:28:38.255 [DFU] Enabling notifications for 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:38.255 [DFU] gatt.setCharacteristicNotification(8ec90001-f315-4f60-9fb8-838830daea50, true)
    D 18:28:38.256 [DFU] gatt.writeDescriptor(00002902-0000-1000-8000-00805f9b34fb, value=0x01-00)
    I 18:28:38.287 [DFU] Data written to descr.8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-00
    V 18:28:38.287 [DFU] Notifications enabled for 8ec90001-f315-4f60-9fb8-838830daea50
    A 18:28:38.287 [DFU] Notifications enabled
    D 18:28:38.287 [DFU] wait(1000)
    V 18:28:39.298 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:39.298 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:39.320 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 06-01
    I 18:28:39.320 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-06-01-00-02-00-00-00-00-00-00-00-00-00-00
    A 18:28:39.321 [DFU] Command object info received (Max size = 512, Offset = 0, CRC = 00000000)
    V 18:28:39.321 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:39.321 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:39.350 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 02-00-00
    I 18:28:39.350 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-02-01
    A 18:28:39.351 [DFU] Packet Receipt Notif disabled (Op Code = 2, Value = 0)
    V 18:28:39.351 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:39.351 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:39.379 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-01-8D-00-00-00
    I 18:28:39.380 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:39.380 [DFU] Command object created
    V 18:28:39.380 [DFU] Writing to characteristic 8ec90002-f315-4f60-9fb8-838830daea50
    D 18:28:39.380 [DFU] gatt.writeCharacteristic(8ec90002-f315-4f60-9fb8-838830daea50)
    I 18:28:39.383 [DFU] Data written to 8ec90002-f315-4f60-9fb8-838830daea50, value (0x): 12-8A-01-0A-44-08-01-12-40-08-08-10-34-1A-02-B6-01-20-00-28-00-30-00-38-F4-8E-03-42-24-08-03-12-20-1F-47-A6-16-ED-B6-A4-56-44-50-D7-E3-A9-D0-8D-6F-85-DA-9C-18-41-BA-6F-1F-76-B1-C9-38-BB-1E-DE-A7-48-00-52-04-08-01-12-00-10-00-1A-40-82-B7-D2-1E-8A-CA-8A-3A-F2-B2-84-A4-6E-24-65-AC-85-52-E7-3C-D6-E7-3F-40-A0-BC-E5-4D-C7-25-DB-E6-23-93-7B-7E-84-60-87-1B-96-CD-8F-B1-62-08-CF-F3-A0-0D-03-53-F0-31-1B-6E-C1-47-6D-2B-05-68-1C-E8
    A 18:28:39.383 [DFU] Command object sent (CRC = 284BB858)
    V 18:28:39.383 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:39.383 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:39.409 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:39.410 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-8D-00-00-00-58-B8-4B-28
    A 18:28:39.410 [DFU] Checksum received (Offset = 141, CRC = 284BB858)
    V 18:28:39.410 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:39.410 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:39.439 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:39.455 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:39.455 [DFU] Command object executed
    V 18:28:39.455 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:39.455 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:39.486 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 02-0A-00
    I 18:28:39.492 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-02-01
    A 18:28:39.499 [DFU] Packet Receipt Notif Req (Op Code = 2) sent (Value = 10)
    V 18:28:39.499 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:39.499 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:39.619 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 06-02
    I 18:28:39.622 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-06-01-00-10-00-00-00-00-00-00-00-00-00-00
    A 18:28:39.622 [DFU] Data object info received (Max size = 4096, Offset = 0, CRC = 00000000)
    V 18:28:39.657 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:39.657 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:39.665 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:39.665 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:39.665 [DFU] Data object (1/13) created
    D 18:28:39.665 [DFU] wait(400)
    A 18:28:40.067 [DFU] Uploading firmware...
    V 18:28:40.067 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:40.296 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:40.296 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:40.414 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:40.415 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-10-00-00-C8-9B-9A-AC
    A 18:28:40.415 [DFU] Checksum received (Offset = 4096, CRC = AC9A9BC8)
    V 18:28:40.415 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:40.415 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:40.444 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:40.445 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:40.445 [DFU] Data object executed
    V 18:28:40.445 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:40.445 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:40.476 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:40.477 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:40.477 [DFU] Data object (2/13) created
    A 18:28:40.477 [DFU] Uploading firmware...
    V 18:28:40.477 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:40.797 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:40.797 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:40.894 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:40.895 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-20-00-00-DB-F8-49-8B
    A 18:28:40.895 [DFU] Checksum received (Offset = 8192, CRC = 8B49F8DB)
    V 18:28:40.895 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:40.895 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:40.925 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:40.925 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:40.926 [DFU] Data object executed
    V 18:28:40.926 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:40.926 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:40.954 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:40.955 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:40.955 [DFU] Data object (3/13) created
    A 18:28:40.955 [DFU] Uploading firmware...
    V 18:28:40.955 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:41.304 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:41.304 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:41.404 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:41.405 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-30-00-00-C0-58-6A-94
    A 18:28:41.405 [DFU] Checksum received (Offset = 12288, CRC = 946A58C0)
    V 18:28:41.405 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:41.405 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:41.434 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:41.435 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:41.435 [DFU] Data object executed
    V 18:28:41.435 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:41.435 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:41.471 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:41.471 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:41.471 [DFU] Data object (4/13) created
    A 18:28:41.471 [DFU] Uploading firmware...
    V 18:28:41.471 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:41.787 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:41.787 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:41.915 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:41.921 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-40-00-00-5D-2B-A3-5C
    A 18:28:41.921 [DFU] Checksum received (Offset = 16384, CRC = 5CA32B5D)
    V 18:28:41.921 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:41.921 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:41.944 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:41.944 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:41.945 [DFU] Data object executed
    V 18:28:41.945 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:41.945 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:41.974 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:41.974 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:41.975 [DFU] Data object (5/13) created
    A 18:28:41.975 [DFU] Uploading firmware...
    V 18:28:41.975 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:42.289 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:42.289 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:42.395 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:42.395 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-50-00-00-F1-13-73-81
    A 18:28:42.396 [DFU] Checksum received (Offset = 20480, CRC = 817313F1)
    V 18:28:42.396 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:42.396 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:42.425 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:42.426 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:42.426 [DFU] Data object executed
    V 18:28:42.426 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:42.426 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:42.457 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:42.457 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:42.457 [DFU] Data object (6/13) created
    A 18:28:42.457 [DFU] Uploading firmware...
    V 18:28:42.457 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:42.793 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:42.794 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:42.889 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:42.890 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-60-00-00-33-F6-84-51
    A 18:28:42.891 [DFU] Checksum received (Offset = 24576, CRC = 5184F633)
    V 18:28:42.891 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:42.891 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:42.926 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:42.926 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:42.928 [DFU] Data object executed
    V 18:28:42.928 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:42.928 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:42.950 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:42.951 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:42.951 [DFU] Data object (7/13) created
    A 18:28:42.951 [DFU] Uploading firmware...
    V 18:28:42.951 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:43.275 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:43.275 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:43.384 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:43.385 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-70-00-00-23-6C-81-69
    A 18:28:43.385 [DFU] Checksum received (Offset = 28672, CRC = 69816C23)
    V 18:28:43.385 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:43.385 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:43.415 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:43.415 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:43.415 [DFU] Data object executed
    V 18:28:43.415 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:43.415 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:43.444 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:43.445 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:43.445 [DFU] Data object (8/13) created
    A 18:28:43.445 [DFU] Uploading firmware...
    V 18:28:43.445 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:43.791 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:43.791 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:43.894 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:43.896 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-80-00-00-2B-2D-DC-FD
    A 18:28:43.896 [DFU] Checksum received (Offset = 32768, CRC = FDDC2D2B)
    V 18:28:43.896 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:43.896 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:43.924 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:43.925 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:43.925 [DFU] Data object executed
    V 18:28:43.925 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:43.925 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:43.954 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:43.955 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:43.955 [DFU] Data object (9/13) created
    A 18:28:43.955 [DFU] Uploading firmware...
    V 18:28:43.955 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:44.298 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:44.298 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:44.389 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:44.390 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-90-00-00-FA-14-61-59
    A 18:28:44.391 [DFU] Checksum received (Offset = 36864, CRC = 596114FA)
    V 18:28:44.391 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:44.391 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:44.419 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:44.420 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:44.421 [DFU] Data object executed
    V 18:28:44.421 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:44.421 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:44.450 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:44.451 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:44.451 [DFU] Data object (10/13) created
    A 18:28:44.451 [DFU] Uploading firmware...
    V 18:28:44.451 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:44.814 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:44.814 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:44.884 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:44.885 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-A0-00-00-DC-0B-2D-15
    A 18:28:44.885 [DFU] Checksum received (Offset = 40960, CRC = 152D0BDC)
    V 18:28:44.885 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:44.885 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:44.914 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:44.915 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:44.915 [DFU] Data object executed
    V 18:28:44.915 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:44.915 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:44.944 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:44.945 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:44.947 [DFU] Data object (11/13) created
    A 18:28:44.947 [DFU] Uploading firmware...
    V 18:28:44.947 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:45.288 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:45.288 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:45.394 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:45.395 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-B0-00-00-1C-7D-B5-44
    A 18:28:45.395 [DFU] Checksum received (Offset = 45056, CRC = 44B57D1C)
    V 18:28:45.395 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:45.395 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:45.424 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:45.425 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:45.431 [DFU] Data object executed
    V 18:28:45.431 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:45.431 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:45.454 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-00-10-00-00
    I 18:28:45.456 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:45.456 [DFU] Data object (12/13) created
    A 18:28:45.456 [DFU] Uploading firmware...
    V 18:28:45.456 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:45.803 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:45.803 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:45.889 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:45.890 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-00-C0-00-00-8D-4F-FE-AC
    A 18:28:45.891 [DFU] Checksum received (Offset = 49152, CRC = ACFE4F8D)
    V 18:28:45.891 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:45.891 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:45.919 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:45.919 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:45.920 [DFU] Data object executed
    V 18:28:45.920 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:45.920 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:45.949 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 01-02-74-07-00-00
    I 18:28:45.950 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-01-01
    A 18:28:45.951 [DFU] Data object (13/13) created
    A 18:28:45.951 [DFU] Uploading firmware...
    V 18:28:45.951 [DFU] Sending firmware to characteristic 8ec90002-f315-4f60-9fb8-838830daea50...
    V 18:28:45.992 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:45.992 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:46.190 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 03
    I 18:28:46.190 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-03-01-74-C7-00-00-D1-33-1B-EB
    A 18:28:46.191 [DFU] Checksum received (Offset = 51060, CRC = EB1B33D1)
    V 18:28:46.191 [DFU] Writing to characteristic 8ec90001-f315-4f60-9fb8-838830daea50
    D 18:28:46.191 [DFU] gatt.writeCharacteristic(8ec90001-f315-4f60-9fb8-838830daea50)
    I 18:28:46.220 [DFU] Data written to 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 04
    I 18:28:46.393 [DFU] Notification received from 8ec90001-f315-4f60-9fb8-838830daea50, value (0x): 60-04-01
    A 18:28:46.393 [DFU] Data object executed
    A 18:28:46.393 [DFU] Upload completed in 6353 ms
    I 18:28:46.799 [DFU] Disconnected by the remote device
    D 18:28:46.846 [DFU] gatt.refresh() (hidden)
    D 18:28:46.846 [DFU] gatt.close()
    D 18:28:46.846 [DFU] wait(1400)
    D 18:28:46.847 [DFU] [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED
    D 18:28:48.213 gatt.close()
    D 18:28:48.215 wait(200)
    V 18:28:48.416 Connecting to CA:CB:86:2A:F2:6D...
    D 18:28:48.417 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
    D 18:28:49.900 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED
    D 18:28:49.924 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2)
    I 18:28:49.924 Connected to CA:CB:86:2A:F2:6D
    V 18:28:49.949 Discovering services...
    D 18:28:49.949 gatt.discoverServices()
    I 18:28:50.234 Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms)
    D 18:28:50.461 [Callback] Services discovered with status: 0
    I 18:28:50.461 Services discovered
    V 18:28:50.471 Generic Access (0x1800)
    - Device Name [R W] (0x2A00)
    - Appearance [R] (0x2A01)
    - Peripheral Preferred Connection Parameters [R] (0x2A04)
    - Central Address Resolution [R] (0x2AA6)
    Generic Attribute (0x1801)
    - Service Changed [I] (0x2A05)
       Client Characteristic Configuration (0x2902)
    Secure DFU Service (0xFE59)
    - Buttonless DFU [I W] (8ec90003-f315-4f60-9fb8-838830daea50)
       Client Characteristic Configuration (0x2902)
    D 18:28:50.472 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true)
    I 18:28:50.518 Connection parameters updated (interval: 48.75ms, latency: 0, timeout: 5000ms)
    I 18:28:55.062 Connection parameters updated (interval: 198.75ms, latency: 0, timeout: 4000ms)

    //===========================

    It failed after write characteristic - 06 01 01 

    I read some post on your devzone, someone mentioned it may be the Jlink driver has to go back to previous version.

    Also my nrfutil is 6.1.0 version, it needs python3..7.2. But python3.7.2 is installed on usr/local/bin

    while python3.5.2 is installed on /usr/bin.

    Just for informational purpose.

    Thanks,

    David

  • Hi David,

    The error code 0x8005 is NRF_ERROR_SD_RPC_NO_RESPONSE, and the error code 0x802a is NRF_ERROR_SD_RPC_H5_TRANSPORT_NO_RESPONSE. We sometimes see this (and other communication issues) when using the USB-UART passthrough of the onboard Segger debugger chip. Based on experience, this is usually fixed by disabling the mass storage feature of the onboard debugger, as suggested here. You can do this using the "MSDDisable" command in JLink Commander. See this for details.

    Einar

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