B850I Aorus Pro won't update BIOS

So I just built a brand new PC and was about to update BIOS to FA9b. I went through the procedure in BIOS, everything was ok and I clicked reboot, the system rebooted itself, the fans and the RGB were working but there was nothing on the screen. I also checked the motherboard and the troubleshooting LEDs were stuck on the DRAM stage (this didn't happen when I first powered it on and it got to the boot stage just fine).

This went on for about 10 minutes when I decided to turn it off and back on again. It booted to BIOS just fine and showed that the BIOS is still in the FA2 version. I then tried this 2 more times, I tried changing the flash drive but always with the same result. I'm now on my third attempt and the computer has been idling with nothing on the screen for 50 minutes now.

I made sure to format the flash drives to FAT32 and I unzipped the BIOS file to the flash drive instead of copying the zip file. I also found this thread which describes the exact same problem as mine but I never had XMP enabled in the first place as it's a brand new PC. I still tried enabling and disabling XMP but it didn't help.

I'm not sure what to do now. Should I try the BIOS flashback method? Or should I just not update at all?