Bios Mods -The Best BIOS Update and Modification Source

Sorry fot my English,
my backup bios https://www.sendspace.com/file/651953
I want to add a 4g card, and found  a whitelist, it can be removed?

I had google "whitelist removed" , but little message for t490. I had tried to modify the bios by uefitool, but it only surport up to t480.

(09-08-2020, 11:20 PM)SUNNYBOY958 Wrote: [ -> ]Sorry fot my English,
my backup bios
I want to add a 4g card, and found  a whitelist, it can be removed?

Hi
How did you get this file?
Do you have a SPI-programmer?

Sorry for my English,

I get this file by SPI-programmer

Add I am trying to mod it by uefitool ,using replaced 4g card id 86806073F81C0585 in 79E0EDD7-9D1D-4F41-AE1A-F896169E5216 , but I found that the bios has two 79E0EDD7-9D1D-4F41-AE1A-F896169E5216, and I mod all of them and replaced them.

When I flashed the mod bios back , I got a blackscreen with alarm at boot

Then I tried to use thinkpad-uefi-sign to sign bios, but got ERROR: Could not find public key modulus in firmware file!

The end I tried to mod the bios with replacing hex “4C 4E 56 42 42 53 45 43 FB” to “4C 4E 56 42 42 53 45 43 FF”, and still got a blackscreen with alarm .

I noted that the bios is much bigger than bios from Lenovo web site , was there something wrong when I backup the bios?

I have sended the bios to your email.


Best regard.