Hi all,
Last year the BIOS flash of my older laptop went bad, couldn't retrieve any data of it because at that time i had zero knowledge about BIOS.
So i have no backup of my serial number. it took me few months but i was able to revive my dead laptop.
i studied and changed bits and bits to get my laptop going, i was able to update my bios, was able to whitelist it and god knows what i have done to that laptop.
last thing left to fix was my serial number.
I compared bios dumps from different laptops and found out that it stored the checksum in hex bytes.
i can always replace my serial numbers without breaking my bios if i also replace those hex bytes.

I do not want to continue flashing my BIOS because I don't know how much writes can the IC handle (Its a Winbond IC from 2012)
is there any way i can create a checksum for my serial number.

For e.g WB066079** has hex bytes f (66)
WB116003** has hex bytes p (70)
WB126598** has hex bytes [ (5B)

I don't have hex bytes for my serial number (WB075174**).

Device Info:
Lenovo B480
Intel i5-3210M
8GB RAM
1.5TB HDD
120GB SSD
Whitelist Unlocked
BIOS version: Lenovo H1ET85WW (1.23)
EC version: Lenovo H1EC34WW (1.14)

Any Help will be appriciated

Did you dump your bricked bios before overwriting it? The information can normally be recovered from this dump.

Zitat von lfb6 im Beitrag #2

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Did you dump your bricked bios before overwriting it? The information can normally be recovered from this dump.

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