NRF52810 Flashing does not start

[mic-bec]

This is my first attempt to flash with a ST-Link V2 and I have a problem starting the flash process on an nrf52810 tag.
After the command to flash, the process stops at this point.

cp _build/nrf52810_xxaa_s112.bin _build/nrf52810_xxaa_s112_patched.bin
xxd -p -c 100000 | xxd -r -p | dd of=_build/nrf52810_xxaa_s112_patched.bin skip=1 bs=1 seek=109128 conv=notrunc

Any ideas what I could look for? I think I have connected all 4 lines correctly. Thanks.

[lovelyelfpop]

Any error logs?

[mic-bec]

Nothing more on the screen. Is there a logfile I could look for?