BIOS downgrade

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crashman
Posts: 1
Joined: Mon Jan 15, 2018 12:27
Product(s): LIFEBOOK AH544/G32

BIOS downgrade

Postby crashman » Tue Jan 16, 2018 17:06

Hot to downgrade BIOS V1.2.2 (secure bios) to V1.2.0?
High CPU utilization (one core 90-100pc, second 3-4 pc) after BIOS update.
How to do it from Windows 10?
I've tried flash BIOS from DOS. It's impossible. '' BIOS image is equal or older than ROM!''
''If Secure BIOS is enabled there is no possibility to flash the BIOS in DOS environment.
Please use the Windows based flash procedures instead of.''
Are there any ideas how to do it? The reason is not OS or drivers. It happens on Linux too.
LIFEBOOK AH544/G32
Intel® Core™ i5-4200M
8GB DDR3L 1600MHz
NVIDIA GeForce GT720M
I would be grateful for any help.

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sabrex
Posts: 1145
Joined: Thu Jun 05, 2003 0:01
Product(s): Various
Location: England
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Re: BIOS downgrade

Postby sabrex » Tue Mar 13, 2018 0:34

Possibly secure boot is enabled in bios check in bios under security - secure boot configuration - then secure boot

make sure it is disabled - if it is enabled and greyed out try set a admin password 12345
then go back and set disabled and then removed the pass 12345

On save and exit you should be able to load dos and run Flash from dos


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