Wouldn't POST after installing AMD Ryzen 5 5600G. Motherboard came with version 1.2 out of the box. Luckily I had a spare AMD Ryzen 5 3600 and GPU lying around. Installed these then it would POST. Downloaded the bios flash rom version 1.9 from ASRock website and formatted a USB stick to FAT32, copied flash rom to USB. Booted into BIOS and chose instant flash, selected the rom file. BIOS was updated to version 1.9. After restart, a warning about CPU change and reset settings. Chose Yes and all is working fine now.