@jotapesse don’t bother with the EoM tool, I have jumped through these suggested hoops (including installing Windows for it) despite suspecting that they would do nothing, and indeed they didn’t - hopefully you won’t have to waste as much time on this as I have.
The EoM tool just flips a “fuse” relating to Firmware Anti Rollback, it doesn’t have anything to do with microcode.
I have had it confirmed via DM that there is no fix available, as you have said all along the only way this can get fixed is with a bios update and that isn’t coming. It makes it really easy to recommend against anyone buying a beelink machine, I’ll update this thread if a patch ever comes out but the official line at the moment is “we are currently unable to provide the CPU microcode update you require”.