I wasn’t aware of that you just flashed the bios of another machine with an older bios version. The proper way to handle this would’ve been to reconfigure / clean the ME region of your dump according to
Re- using an ME region that was initialized on another machine even if these machines are completely identical might work or might work partially or might not work at all.
If cleaning the ME region of the original firmware doesn’t solve the bios problem one might start with an empty “stock” NVRAM in bios region.