I'd try another AGESA between those two versions. You may have to step down several times.Nope,
I tried to flash back from 4402 mto 2606 BIOS but its not possible for me.
I tried several USB sticks but the BIOS keeps saying that the 2606 BIOS is not an proper BIOS and won't let me flash it.
What can i do in order to flash the 2606 BIOS again?