Bricked debugger on nRF54L15-DK

[Nick Stoughton]

I just received a new 54L15DK and was attempting to port a simple 5340 project to it. The first time I attempted to flash it, it _looked_ like it was successful:

[10/10] Generating ../merged.hex
-- west flash: using runner nrfutil
-- runners.nrfutil: reset after flashing requested
Using board 001057782011
-- runners.nrfutil: Flashing file: /home/nick/work/eargo-charger-fw/projects/novum/build/merged.hex
-- runners.nrfutil: Erasing pages touched by firmware
-- runners.nrfutil: Programming image
-- runners.nrfutil: Verifying image
-- runners.nrfutil: Reset
-- runners.nrfutil: Board with serial number 1057782011 flashed successfully.

However, from this point on, the debugger refuses to accept commands. I suspect I flashed the debugger (a 5340) rather than the 54L15, since I had not fixed my sysbuild.conf. Is there any way to reflash the debugger?

--

Nick

[PaKa]

You are not able to program the debugger that way so that is not the issue here. Trying to reprogram that device will most likely brick your board permanently so don't try it! Check all power supplies voltages on the nRF54L15 (all decoupling caps) and post here with a picture of the board.

What version is this of the DK? Are any of the LEDs lit up?