Erm my card is like 3+ years old, out of warranty and was only £50.
I've already played around with it and bricked it multiple times with bios flashing just for fun, then boot up using my iGPU and flash it back to stock.
I have a 512 shader Radeon 550 and would simply like a bios for 640 shaders to see if it works. If it bricks I simply reflash the stock bios.
Its easy peasy child's play.