Oh yeah, 1+8 method right. 
But may OP card still under warranty, better didn't do physical tweak.
But may OP card still under warranty, better didn't do physical tweak.
This method used jumper method, connecting a foot IC chip number one and eight. Number one is the one under a small hole in the IC. And number eight is at the opposite end of the number one when we draw a slash of the number one.
one question, Is the jumper should be connected when powering up GPU? I have one dead RX480 reference card and will probably try this out
Yeah. Requires about 6 hands, but you bridge those two poles with a paperclip or similar (I used a stiff wire), then boot. Obviously, you expect an explosion and smoke, but when you get the contact correct it boots up and you can then reflash the correct stock bios. Loads of tutorials online, but it did work for me...