I think any OS can flash GPU now. Im using RaveOS and HiveOS - both of them has opportunity to flash BIOS easily. But im using RaveOS for AMD and HiveOS for NVIDIA GPUs.
I'm just hearing about this RaveOS for the first time, can you please drop a link to the official website for me to check it out? I am only very used with nicehash and hiveOS, there are others like simplemining OS that supports gpu bios flashing too
https://raveos.com/I used only HiveOS for a few years, but several months ago tested RaveOS. I can`t say that it better then HiveOS, but for that time RaveOS was better for AMD GPUs. It has 3 free rigs for tests, and $2 per rig if you have more than 3. After i`ll test NVIDIA GPUs - may be i`ll leave HiveOS.