Thank you very much,
I really didn't know why I couldn't change the information. I was validating your file and if there is DMI information in the sector 0x1000 to 0x2FFF, but your new BIOS file is encrypted on BC base and mine changed the encryption key to 54, FF, etc. I also noticed that it has more information at the beginning. Which method do you use?. Thanks for the help as all the information is in the BIOS. It seems to me that the motherboard was at some point replaced.

😀😉...

Model: Ideapad3 15alc6
MO: L39311C18696
MTM: 82KU00YYUS
MFG DATE: 2021/12/18
FACTORY ID: T
S/N: PC295DZN

Board: HS461$HS561$HS761 NM-D521
2021 - 05 - 08 REV 3.0
[USER="257490"]Vesko356[/USER]
NOT work
7. Copy 0x0520000 into Seletion start and 0x05207FF into selection end ,then click on OK
10. Click back to the oldbios.bin tab and make a new selection (step 6) with 0x062D000 and 0x062D03F and follow steps 8 and 9 again.

I'm trying this one but I'm not succeeding either
publication # 52
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Hello good morning,

I did indeed follow the steps of publication # 52 (. How to make a macro script) and replace the following fields in the new BIOS.

7. Copy 0x0520000 into Seletion start and 0x05207FF into selection end ,then click on OK
10. Click back to the oldbios.bin tab and make a new selection (step 6) with 0x062D000 and 0x062D03F and follow steps 8 and 9 again

I saved and installed the .bin.bak file on the laptop but it doesn't work. (If it turns on but the DMI information is not)

I don't have a healthy backup BIOS. I only have...

Good morning, I'm trying to create the DMI but I can't, I think I'm missing information. Vesko356 hoaca388 could you help me please.
Model: Ideapad3 15alc6
MO: L39311C18696
MTM: 82KU00YYUS
MFG DATE: 2021/12/18
FACTORY ID: T
S/N: PC295DZN

Board: HS461$HS561$HS761 NM-D521
2021 - 05 - 08 REV 3.0

I am attaching the BIOS backup that is working after reviving it 😁 and the damaged BIOS backup before erasing and installing the stable BIOS.
Thanks for the help, I thought I wouldn't be able to use it again....