Asrock X370 Taichi + Ryzen 2600 won't POST

UPDATE: The arse on eBay sold me a dead CPU.

I put a 1200 in, and it POSTed with no issues. BIOS version 4.60P, which is the minimum version for 2600 support. Oddly enough, the board doesn’t want to update at all past 4.60 - it doesn’t find any images neither online or on a USB drive.

Even the Samsung ECC UDIMM seems to work fine.

Mine stopped finding new BIOSes online as well, I thought they changed the server and forgot to add it in the BIOS or something. However, it never fails to detect BIOSes on a USB thumb drive.