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upgrade dell bios with dead battery
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| ### bios flash without battery in WinPE | |
| Run 3521A12.exe with wrong parameter (e.g. writehdrfile) | |
| Wait for error window, but don't close it. | |
| Go to %temp% folder. | |
| Find folder with name looks like - 7zS62A4.tmp | |
| Copy it to somewhere. | |
| Close error window. | |
| Edit platform.ini: replace BatteryCheck=1 to BatteryCheck=0 | |
| Run InsydeFlash.exe |
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