I've started purchasing a few parts for my new build and was lucky to get the last motherboard in stock along with the PSU and a mouse. Fortunately through painstaking research I was able to learn how to identify when a motherboard was manufactured and what BIOS it's shipped with. The part in question is a B550 Tomahawk Max Wifi. First four numbers after the B within the serial number are 2204 so if memory serves this was made in 2022 of April which should also be the time a BIOS version was first released for CPU's like the 5600. I see a BIOS version 7C91 twice, one in the serial number and one in a lower string of numbers under a barcode. Do the numbers mean anything after them? SN has a -140 while the other has a -037. In regards to the CPU, I don't want to update the BIOS if I don't have to if I do decide 5600 over a 5600X and in general. My understanding from MSI's site is there's the latest in v22 and v20 and I don't know of any others. So yeah, I'm pretty sure either CPU I end up ordering will be compatible out of the box but any other pointers would be appreciated since I won't be building maybe at least over a week from now to order and have remaining parts delivered.