[Problem] How To Remove the BIOS Write Protection for Lenovo M710q

[Dark_iaji]

Basically, I unlocked the hidden BIOS menu and found the “BIOS Lock” option, but it’s enabled by default and I can’t disable it. Using setup_var doesn’t work either.

My only option seems to be flashing the BIOS firmware using a programmer. However, when I try flashing the BIOS with FPT, I get the error: Error 368: Failed to disable write protection for the BIOS space. FPT Operation Failed.

How can I remove the BIOS write protection?

B250_MOD_FS_nolinuxfs.bin.zip (8.7 MB)


Edit by Fernando: Thread title shortened and customized

[MeatWar]

[Guide] Unlock Intel Flash Descriptor Read/Write Access Permissions for SPI Servicing

Guide-How To: Unlock Intel Flash Descriptor Read/Write Access Permissions for SPI Servicing Last Updated: 2018-03-20 This guide is relevant to those who need to understand what the Intel Flash Descriptor is, how its SPI Region Read/Write Access Permissions work, how to check its Locked/Unlocked status and what methods are available to unlock it for system firmware repair and/or updating. In this guide, the term "system" means an individual user machine whereas "model" refers to all those "syste…

Add your motherboard model, for forum users’ identification.

[Dark_iaji]

Actually, I used CoffeeTime to unlock the FD write access, but it didn’t help much. Searches indicate that this error is due to BIOS write protection. In the UEFI Setup volume, I found the offset for “BIOS Lock,” and I also discovered the “BIOS Lock” option in a hidden menu after unlocking. However, after switching this option to disabled, saving the settings, and rebooting, I checked the BIOS options, and “BIOS Lock” was still enabled. Using setup_var to set the variable at the offset address for “BIOS Lock” didn’t work either; after rebooting, this setting reverted back to enabled.