Hello Nordic Support,
I’m encountering a critical issue with the nRF54L15 device, custom board.The custom borad is flashed from nrf54l15dk ,PCA10156. After flashing firmware (blink example) once, the device becomes undetectable and unrecoverable. No further access via nrfjprog, nrfutil, or J-Link Commander is possible.
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Device is initially detected and flashed successfully
- Try to debug from rtt but can not concted
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Try to erase and recover
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nrfjprog --recover -
nrfutil device recover -
J-Link Commander (
JLinkExe)
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All recovery attempts fail with errors like:
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Device error: Unknown device family -
Failed to write DebugPort register 0x04 -
Timed out trying to power sys and debug region
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Error like below :
PS C:\ncs\nrf_est> PS C:\ncs\nrf_est> nrfutil device recover x Failed to recover 1057768715, Device error: Failed to write DebugPort register 0x04: Unknown Error in J-Link DLL (error code =-1) Error: One or more recover tasks failed: * 1057768715: Device error: Failed to write DebugPort register 0x04: Unknown Error in J-Link DLL (error code =-1) (Generic)
PS C:\ncs\nrf_est> nrfutil device recover x Failed to recover 1057768715, Device error: Unable to recognize the device: Unknown device family Error: One or more recover tasks failed: * 1057768715: Device error: Unable to recognize the device: Unknown device family (Generic)
PS C:\ncs\nrf_est> nrfutil device recover x Failed to recover 1057768715, Device error: A timeout occured while handling debug power: Timed out trying to power sys and debug region Error: One or more recover tasks failed: * 1057768715: Device error: A timeout occured while handling debug power: Timed out trying to power sys and debug region (Generic) nrf54l15
Connecting to target via SWD
Found SW-DP with ID 0x6BA02477
DPIDR: 0x6BA02477
CoreSight SoC-400 or earlier
Scanning AP map to find all available APs
AP[1]: Stopped AP scan as end of AP map has been reached
AP[0]: AHB-AP (IDR: 0x84770001, ADDR: 0x00000000)
Iterating through AP map to find AHB-AP to use
AP[0]: Skipped. No ROM table (AHB-AP ROM base: 0x00000000)
Attach to CPU failed. Executing connect under reset.
Failed to power up DAP
Found SW-DP with ID 0x6BA02477
DPIDR: 0x6BA02477
CoreSight SoC-400 or earlier
Scanning AP map to find all available APs
AP[0]: Stopped AP scan as end of AP map has been reached
Iterating through AP map to find AHB-AP to use
Attach to CPU failed. Executing connect under reset.
Failed to power up DAP
Error occurred: Could not connect to the target device.
For troubleshooting steps visit: wiki.segger.com/J-Link_Troubleshooting
