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Alright, let's look at fpt-info.txt in results folder.
You can find this text
Master Region Access:
CPU/BIOS - ID: 0x0000, Read: 0x0B, Write: 0x0A
ME - ID: 0x0000, Read: 0x0D, Write: 0x0C
GbE - ID: 0x0118, Read: 0x08, Write: 0x08
It is conbination of hex values located at offset 0x000080 of full firmware.
00 0b 0a 00 00 0d 0c 18 01 08 08 00...this conbination found in dump of 8 mb size only.
As i said before, Descriptor region located in large chip.
I have tried to patch SecurityFlashUpdating module but protections is still enabled.
So permissions can be changed in Descriptor region only, but Intel FPT and Backup Tool havent access to it.I removed permissions in your last dump of big chip,so you can flash it and check write protection.
Bios image consists of 5 regions at minimum: Descriptor, Me region (private data),PDR and GBe regions (it are empty in most causes),bios region (main body of bios).Descriptor(contains permissions and info about bios image uncluding version and platform) and Bios region can be updated only during flash procedure from Winflash.exe or InsydeFlash.exe (for Insydeh20 bioses).Private data like serial numbers,UUID, Macs can be changes using special software Lenovo DMI Tools.
Please,do not post requests me in PM.Bios modding is very dangerous work.If i provide you confirmed modded bios, please
donate for my dangerous work
https://goo.gl/98BgtO.Thank you!