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Open up Terminal to get to command line interface:
To save a bios: sudo /root/utils/amdvbflash -s 0 bios.rom
Where "bios.rom" are the name of the file and 0 are the GPU number you want to save the bios from
To flash a bios: sudo /root/utils/amdvbflash -p 0 bios.rom
Where "bios.rom" are the name of the file and 0 are the GPU number you want to flash. Make sure you are in the same folder as the file.