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December 10th, 2025 21:37
BIOS upgrade
I acquired old Dell Optiplex from a garage sale, I upgraded BIOS form A16 to A25, would this mean I have flashed my BIOS? and any Rootkit or Bootkit/ malware present in BIOS is gone.
Besides that I have done Diskpart/ Clean ( not Cleanall) and done fresh install of OS
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redxps630
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December 10th, 2025 23:47
Bios upgrade is flashing bios. Rookit removal requires special tools and methods, such as flashing the BIOS with a clean version, but even that may not be a guaranteed solution depending on the rootkit's sophistication.