User name rpi-first-boot-wizard

After looking at the arm64 Trixie repo it appears there are no packages available for mesaflash.
One option would to be build from source.
Or to manually download the bookworm version and install that.
As it is almost 12:00 am I fear I may not be able to respond in a timely manner.

Normally this is what is needed to read Mesa boards:
mesaflash --device 5i25 --readhmid
but for SPI i would guess
mesaflash --device 7c81 --addr /dev/spidev0.0 --spi --readhmid
should work, and it should be safe to try.
If you do have more questions about Mesa boards, use the "driver boards" section of the forum.

Ok Thank you

Unfortunately, in trixie image_2025-11-10-raspios-lcnc-2.9.7-6-trixie-arm64.zip the command mesaflash --device 7c81 --addr /dev/spidev0.0 --spi --readhmid doesn't work. No 7c81 board found.

forum.linuxcnc.org/27-driver-boards/3889...7c81?start=20#195102

Now it's morning time I'll have a look into this in a couple of hours.
Note to self, you're too old for late nights.