west flash error

[jk0010]

Nucleo STM32F401RE
zephyr-sdk-0.16.4

Hello all,
I am brand new to zephyr and still figuring stuff out. I am having some trouble flashing to my nucleo board. I am able to build a project just fine west build -p auto -b nucleo_f401re samples/basic/blinky. The error I get when I run west flash is

-- west flash: rebuilding
[1/1] cd /home/lab/zephyrproject/zephyr/build/zephyr && /usr/bin/python3 /home/lab/zephyrpro...d/check_init_priorities.py --elf-file=/home/lab/zephyrproject/zephyr/build/zephyr/zephyr.elf
-- west flash: using runner openocd
-- runners.openocd: Flashing file: /home/lab/zephyrproject/zephyr/build/zephyr/zephyr.hex
Open On-Chip Debugger 0.11.0+dev-00726-ge2b6f5655 (2023-11-15-11:07)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
Info : clock speed 2000 kHz
Error: open failed


FATAL ERROR: command exited with status 1: /home/lab/zephyr-sdk-0.16.4/sysroots/x86_64-pokysdk-linux/usr/bin/openocd -s /home/lab/zephyrproject/zephyr/boards/arm/nucleo_f401re/support -s /home/lab/zephyr-sdk-0.16.4/sysroots/x86_64-pokysdk-linux/usr/share/openocd/scripts -f /home/lab/zephyrproject/zephyr/boards/arm/nucleo_f401re/support/openocd.cfg '-c init' '-c targets' -c 'reset init' -c 'flash write_image erase /home/lab/zephyrproject/zephyr/build/zephyr/zephyr.hex' -c 'reset run' -c shutdown

Any help or suggestions would be much appreciated.
Thank you

[Tom2096]

Hi! Did you end up fixing this issue? I am running into something similar.

[jk0010]

Yes I did. Before I started getting this error I installed jlink drivers to try to solve a different issue. After this my board was recognized as a JLink device in device manager. I believe this was the cause of my problem. First I'd check how your device is being recognized in device manager.

My soultion:
I installed the SEGGER STLinkReflash utility and followed the restore stlink instructions. After this my device was recognized as STLink in device manager (previously JLink). Running lsusb and the device was recognized as STLink. After this I was able to flash my nucleo board.

[Tom2096]

Thanks, reflashing back to STLink and updating the firmware did the trick.