I have 3 bricked cards...  All three of them are RX570's.  On two, the fans do not spin and they are totally unresponsive.  On the third, the fans spin, but that's all it does.

I have tried:

-Atiflash GUI in admin mode in Windows 10
-"atiflash -i" and "atiflash -p -f 0 bios.rom" in admin mode of CMD in windows.
-atiflash (same commands) on a DOS USB stick.
-bridging pins 1+8 on the BIOS chip on the back of the card and then turning on the computer and holding the bridged pins throughout running atiflash commands.

When I try "atiflash -i" in either DOS or CMD, it says "adapter not found."  The computer obviously can boot with the cards, but no program (atiflash, GPUz, windows device manager) can see the cards.  I have held pins one and eight together many times through several power on cycles. 

I am at my wits end with these cards.  I have unbricked a few cards previously using atiflash, but these three are a pain in the ass.  Does anyone have some suggestions or tricks I haven't found that could help?