Bios Mods -The Best BIOS Update and Modification Source

Hello, I just joined I would like to congradulate you guys for the excelente ideia and this forum is actually my hope of making this board usefull.
I upgraded to a decent B550 so I have this laying around. I would like to pair it with a cheap Ryzen 1200 to make an HTCP , but somehow this MB's only support Ryzen 3500/3600/3700, can anyone add microcode to the BIOS?

Do you need the BIOS file? From what I see online some ppl suffering from similar BIOS limitations on these PC's.

Best Regards

Would it be possible to get a Ryzen 3100 for that machine? Usually chipsets that new don't always support 1st generation Ryzen chips. I would also add more information on the board you are working on, such as a BIOS file for it and your CPUID. I don't see much that could be of help here.