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ASUS Z370 PRIME-A I cant flash previous BIOS anymore

greekwow
Level 7

‎06-14-2018 05:28 AM - last edited on ‎03-06-2024 08:37 PM by Community Admin

Hi.

I have Z370 PRIME-A and yesterday i updated with the new Bios 0805.
Now i want to go back on previous versions and when i try this on bios it gives me this error "selected file is not a proper bios!"

so there is no way to go back?
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Retired
Not applicable

‎06-17-2018 08:45 AM

I have learned that BIOS 0805 will not allow reflashing of previous BIOS versions. This is because of the Intel ME Security included in 0805. I am referring to using the EZ Flash. There are advanced ways to remove 0805, but if it flashes successfully (most likely it will) and it addresses the melt down security threat it's best to keep 0805 as your current BIOS.

Do your tweaking in UEFI and save your settings to a Flash Drive. Very easy process under Tools in UEFI.
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