Asrock A300M non APU support

[W4RR10R]

I want use the the recently released asrock A300M mSTX motherboard for a SFF project and I want to use an R5 2600 and RX Vega 56 (connected with an m.2 to PCIe riser). The board does not post, no power LED/no cpu detected, with my 2600 installed but work just fine with a 200ge that I bought to troubleshoot, also the gpu works as well with the riser in an M.2 slot.

I would like to have support for the 2600 (and all of the ryzen CPU if possible, because why not) and unlocking the multiplier would be nice but isn't a necessity.

Would it be possible to flash an asrock a320 or b350 BIOS to this board, to add the wanted support with a modded bios?

A300M BIOS 3.20

Potential B350 BIOS
Potential A320 BIOS


I need your help as Asrock has been reluctant to even reply to me asking if there is even a possibility for them to do this. I'm new so sorry for any dumb questions.

Here is my build on the SFF forum.