[REQUEST] Lenovo V570(c) (44CNxxWW) BIOS Unlock

[gemskrit]

Hello, I've managed to activate Advanced tab without modding firmware (soft unlock).

You need to set byte 0x3 in OilSetup NVRAM variable to 0x0, it's responsible for Advanced tab.

It seems impossible to do this via efivars interface in Linux, but in UEFI Shell you can dump this variable (via dmpstore), open it with hexedit, find 4-byte little-endian number 07 00 00 00 (attributes mask) and go to 4th byte from it, or dump this variable with Power Beep(0x2) setting turned on and off to find which byte changes and the next byte from it is one you are looking for. Then just put this variable back to NVRAM by dmpstore.

Here is a dump of Setup menu in latest (44CN43WW) v570 firmware extracted by UEFITool and Universal IFR Extractor, so you can make sure that there is such hidden setting.

And remember, that loading default settings will hide this tab and you'll need to reenable it again.

It is not clear how to do it when I change the parameter Power Beep in dmpstore no change.
My dmpstore:

Code:

1E000000 55007300 65007200 4D006100 6E006100 67006500 72005600 61007200 00009771 F11ECE2C D649A6CE 4012F338 A76E0300 00000500 00000000 0000000E 00000053 00790073 00740065 006D0000 00F9FC47 E901DD65 49B80832 A7B68156 57030000 00150000 00000001 01000001 00000000 00000000 00010701 01012800 00004800 44004400 5F005000 61007300 73007700 6F007200 64005F00 53007400 61007400 75007300 0000DFC7 FF0DB649 6245B9BF E51C2B6E 1B1C0300 00000900 00000000 00000000 0000001E 00000053 00740061 00740075 00730053 00650074 00750070 00560061 00720000 00F7ED6E 7E5E123F 4194418C D996FE89 67030000 00630000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0E000000 58007400 75004E00 76003700 0000F661 FC96BBE3 824FE096 C9C8A1BC D1920300 00003500 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0000001C 00000044 00490041 00470053 0050004C 00530048 00530043 0052004E 00000061 DFE48BCA 93D211AA 0D00E098 032B8C07 00000002 000000A0 A0100000 00500063 00680049 006E0069 00740000 000AF7C2 E604B677 4885BADE EC89E117 EB070000 00040000 0000B0EF BA100000 00540069 006D0065 006F0075 00740000 0061DFE4 8BCA93D2 11AA0D00 E098032B 8C070000 00020000 0001001A 00000050 006C0061 00740066 006F0072 006D004C 0061006E 00670000 0061DFE4 8BCA93D2 11AA0D00 E098032B 8C070000 00060000 00656E2D 55530026 00000041 00630070 00690047 006C006F 00620061 006C0056 00610072 00690061 0062006C 00650000 0067FD9F AF10EC8A 489DFC6C BF5EE22C 2E070000 00080000 000020F8 BA000000 001C0000 0053004D 00420049 004F0053 0045004C 004F0047 00300030 00300000 0098AEEE C3BF232B 41AB60EF CBB48E15 34070000 00120000 00000000 00006001 00000000 00000000 01FF0022 00000053 004D0042 0049004F 00530045 004C004F 0047004E 0055004D 00420045 00520000 0098AEEE C3BF232B 41AB60EF CBB48E15 34070000 00010000 00011C00 00005500 66006100 43006F00 6E006600 69006700 44006100 74006100 00003F70 1C7185C2 104BA3B0 36ECBD3C 8BE20700 00002600 00007000 66006C00 61007300 68002000 2F006200 62006C00 20002F00 63007600 61007200 20000000 0E000000 48004400 44005000 57004400 000061DF E48BCA93 D211AA0D 00E09803 2B8C0700 00000800 0000B200 00000300 0000