Messed up and flashed an unverified older Phantom Gaming XTX vbios from TechPowerUp (hoping it will fix some issues). Tried to fix it, AMDVBFLASH says reflash was successful, but doesn’t seem to fix things.

A screenshot of the successful reflash: https://i.imgur.com/O2zabPI.png

In actuality I've been repeating these steps several times, each time it says I was successful however the Test status keeps saying Fail and P/N being unknown everytime despite each success. Ofc, GPU-Z also reports a blank bios version. Changing display type in Bios from iGPU to dGPU results in no display (5 beeps = vga has no display).

The XTX is still detected in Device Manager, so I feel like there's still hope. GPU fans spinning, etc. etc. Please, somebody help me.

EDIT: I would like to add that I am reflashing using my original vbios that I backed up before attempting this.