H370… but around the web they all say cant support it. Does the bios lack the mcodes?
Present: 906EA 906EB
NOT present: 906EC 906ED
EDIT: Yes we know that the H370 can support it… your issue is being a Dell brand model motherboard and bios.
So why not adding the remaining missing mcodes… since you hacked it already, one more flash/dump shouldn’t stop you. The CFL GOP and vbios are already present also.
Get the motherboard in Service Mode by its jumper (JMP1), dump the bios region and add/replace the mcodes (depending on available volume space), use the correct ME Intel FPTtool to dump/write.