Need help to update microcode on Core I7 2820QM Sandy Bridge on dell Laptop

Hi guys, I’m the owner of a laptop of the Xps17 L702X, Dell will not release a bios update to mitigate the vulnerabilities Meltdown and Spectre, would it be possible to integrate updated microcodes directly in the bios? (Phoenix secure core tiano setup) The CPU is a Core i7 2820QM (Sandy Bridge) can you help me?

Of course I know that there are no patches for Sandy Bridge, but updating the microcodes to the latest version can be a training for when the final patch will be released!

Thank You!

I modified with L702X_A19, maybe you can try it.

BIOS1.zip (1.88 MB)

Wrong checksum…high risk of brick
anyway i’ve already updated correctly the microcodes with antispectre

Where is antispectre??

is the microcode 0x2d what system do you have?

I have been already update microcode 0x2d, so checksum is changed.

0313.png

It’s normal a change of checksum because the lenght of a region changes. But checksum must be fixed before flashing…otherwise brick! Do you have xps17?

No, maybe you can disable checksum checking in the WINFLASH.INI

I have corrected successfully checksum!