@Sam_Chevalier I was told by @white-round-square that if you have compute module with an emmc, you will not be able to use the sd card.
Idk what you should do in this case. Most probably try to connect your uconsole to the internet and the rpi cm4’s default os installation screen should appear…
see this thread Update: uConsole shipping related - #3018 by white-round-square