I am interested in making a custom CM4 IO board, and I'd like to start by flashing it via USB on Linux, first of all. Since I do not have the IO board, I'd like to know what pins on the CM4 are responsible for flashing. How do I make a custom board that can connect with my pc via USB, to flash a CM4 with eMMC storage?
I'd be very surprised if the official documentation doesn't tell you:
https://www.raspberrypi.com/products/co ... -cm4001000
https://www.raspberrypi.com/products/co ... -io-board/
Statistics: Posted by thagrol — Fri Feb 28, 2025 12:14 pm