I unbricked my RX580!
First i tryed using atiflash with freedos launched by a usb drive. Freedos started but when i wanted to see if the gpu was recognize with "atiflash -i", no adapter was found.
So i decided to try anyway the command "atiflash -f -p 0 xxx.rom" but the error 0FL01 was returned.
At that point i decided to follow cvsea guide:
Soldering pins??

No, no, no
Try this:
- use DDU
-enable onboard video as default display output in your mobo bios
-connect only the bricked card to the x16 slot (main pci-e slot of your mobo)
-boot pc
- run cmd as administrator and navigate to your atiflash folder
- from there type
atiwinflash -f -p 0 yourbiosfile.rom
Recovered many cards this way.
Good luck!
I followed the guide carefully and the bios was flashed to the gpu.
Then i reinstalled drivers and gpu was recognized again by windows.
Thank you so much @cvsea!
Thank you all.
Doria