I attempted to flash the STILT bios (MBA_C6710101-100_K2_AGR_STILTMXT_V46.zip (DPM7 - 1.1125V) and got a SubsystemsID's mismatch error? What am I doing wrong? I have the 290x Sapphire Tri-x OC
Did you use -f (force) ?
e.g.
atiflash -p 0 filename.rom -f