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Downgrade MEI firmware how?

PanosXidis24
Level 12

‎05-17-2022 04:08 AM - last edited on ‎03-06-2024 10:24 PM by Community Admin

Hello guys im on X299 system i need to downgrade MEI firmware like 11.10.0.1287 from the new one!!!how??thanks
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restsugavan
Level 15

‎05-26-2022 12:24 AM

MEI Firmware always did not affects system performance. It was provide more security and protecting against backdoor or root admin attack via USB ports.

By the way if you want to flash older version of MEI Firmware. You can use this command via FWUpdlcl64 Tools.

C:\> FWUpdlcl64 -F "XXX.BIN" -ALLOWSV then hit enter.

Note :: "XXX.BIN" = your old MEI Firmware binary file.
W11 25H2 27881.1000 Core i9 7980XE 02007206 MCE ME 11.12.97.2614 R6E Modified BIOS 4201 SAMSUNG OG9 FW 1020.0 SSD 970 EVO PLUS 1 TB x 3 NVIDIA RTX 4090 GAME READY 576.80 64GB GSKILL DDR4 3200MHz JBL 9.1 Sound Bar DTS-X
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PanosXidis24
Level 12

‎05-26-2022 12:20 PM

Error 8714: Firmware update not initiated due to file open or read failure
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restsugavan
Level 15
In response to PanosXidis24

‎05-29-2022 08:10 AM

PanosXidis24 wrote:
Error 8714: Firmware update not initiated due to file open or read failure


If the option -ALLOWSV not work. You can try second BIOS option on the last page of BIOS menu.

It may help if your board still had initial BIOS version on it.:o

The ME of second BIOS may still the version that you want. :cool:
W11 25H2 27881.1000 Core i9 7980XE 02007206 MCE ME 11.12.97.2614 R6E Modified BIOS 4201 SAMSUNG OG9 FW 1020.0 SSD 970 EVO PLUS 1 TB x 3 NVIDIA RTX 4090 GAME READY 576.80 64GB GSKILL DDR4 3200MHz JBL 9.1 Sound Bar DTS-X
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