OK, 3 BIOSes are attached for Z620. All are based on J96. All modding is done with "MMTool Aptio V4". The microcode downgrade is inserted manually, by replacing the microcode module padded to the same size (did not like how UBU tool shifted things around).
Most ambitious (try first) - NVME/ReBar/MC [NVME boot, ReBar PCIE, microcode downgrade for speed to the version prior to Meltdown and Spectre fixes]
Next (benign) - NVME/ReBar
Mild (known to work elsewhere although different versions) - NVME
Only this region (-A 0x580000 -L 0xA70000) needs to be flashed (out of the whole file), to the same region on the flash chip:
fpt.exe -f bios_file_extract.bin -A 0x580000 -L 0xA70000
Don't flash the full file as-is, only flash the region above.
@BillDH2k
OK, 3 BIOSes are attached for Z620. All are based on J96. All modding is done with "MMTool Aptio V4". The microcode downgrade is inserted manually, by replacing the microcode module padded to the same size (did not like how UBU tool shifted things around).
Most ambitious (try first) - NVME/ReBar/MC [NVME boot, ReBar PCIE, microcode downgrade for speed to the version prior to Meltdown and Spectre fixes] Next (benign) - NVME/ReBar Mild (known to work elsewhere although different versions) - NVME
Only this region (-A 0x580000 -L 0xA70000) needs to be flashed (out of the whole file), to the same region on the flash chip: fpt.exe -f bios_file_extract.bin -A 0x580000 -L 0xA70000
Don't flash the full file as-is, only flash the region above.
J61_0396_nvme.zip J61_0396_nvme_rebar.zip J61_0396_nvme_rebar_mc.zip