On PC Part Picker, when I select an AMD CPU with most motherboards, it says that I could need to update the BIOS and possibly use an older CPU. How true is this? At the moment, I am thinking of using a Ryzen 3 2200G with the Gigabyte GA-320M-S2H.
To avoid a repeat of the Ryzen 1 to Ryzen 2 transition fiasco, AMD set up a 'Ryzen 3000-ready' program where board manufacturers get stickers to stick to the boxes of motherboards that have been pre-loaded with BIOS compatible with Ryzen 3. That will hopefully make it much easier for people to identify compatible boards so they don't have to go through the trial-and-error or borrow-old-CPU process to get started.