@bugmenot I used a Ryzen 5 5500 with no Luck.
It always sees a Ryzen 5 3600 and some random RAM.
Updating the BMC was possible, but upgrading the BIOS was not.
(Not with a CPU and also not without a CPU)
On the topic of unsupported CPUs: If it doesnt like the CPU or RAM (or …) it should beep according to the manual, which it does not.