CM5 with Rpi Io board(can not find loader file)

[3djelly]

I could not find it either, however the Rock 5B SPI loader file works.

https://dl.radxa.com/rock5/sw/images/loader/rock-5b/rk3588_spl_loader_v1.08.111.bin

I opened a Github issue for this to update the docs to its source.