Why not just flip the bios switch to secondary, and maybe you should contact XFX support if you believe the primary bios is faulty?
Also, you should be asking on the TPU forum for help with flash utility.
My PC- Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3600c16dgtzn kit, NM790 2TB, Nitro+RX6900XT, RM850, Win.10 Pro., LC27G55T.