I have no experience at all with 8 DIMM boards, and the 4xDDR3+4xDDR4 boards like TF-Q are even more special. Assuming that you have an external programmer like CH341A and a backup, this is what I would do in your situation:
- First try flashing the stock Huananzhi BD4 BIOS and test. Note: Both BD4 and TF-Q use 8x series chipset and 9.1.x ME. Hence it is very likely enough to just flash the BIOS region (fptw64.exe -f X9BD4006.bin -BIOS)
- If the stock BD4 works, you can go ahead and try my modded BD4 BIOS. If you want TBU, flash the B2 BIOS. In all other scenarios, flash the B1 BIOS
If the BD4 BIOS does not not work, then you can try the JGINYUE X99-8D4/2.5G based BIOS (will absolutely require an external programmer).
Good luck, and please post back in the other thread if you have success with the BD4 BIOS!