Loctran Posted July 23, 2020 Share Posted July 23, 2020 Is there any way to unlock the CFG-Lock in my laptop, DELL INSPIRON 3421. My BIOS is O14A13 (link: https://www.dell.com/support/home/en-vn/drivers/driversdetails?driverid=dcgmv&oscode=wt64a&productcode=inspiron-14-3421). I've try using the /writeromfile but when open the file with UEFITool (link: https://github.com/LongSoft/UEFITool/releases) but when open it, it shown some errors and when I find the word "CFG-Lock", it shown no things although I can find the Unicode string "CFG". Thanks a lot for reading my article and helping me. For the turning off CFG-Lock guide that I'm using is here: https://dortania.github.io/OpenCore-Post-Install/misc/msr-lock.html#what-is-cfg-lock Link to comment Share on other sites More sharing options...
Loctran Posted July 23, 2020 Author Share Posted July 23, 2020 My laptop does have CFG Lock, though. I've tried running VerifyMSRE2.efi but it has shown that my laptop has registered MSRx0E2 protection so it does have that kind of Lock but I can't find CFG Lock in the BIOS image Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted July 23, 2020 Moderators Share Posted July 23, 2020 attach the ROM file you have extracted from your system Link to comment Share on other sites More sharing options...
Loctran Posted July 23, 2020 Author Share Posted July 23, 2020 @Jake LoSorry for that, I've run in cmd this: path/to/O14A13.exe /writeromfile and then the extracted file is here (It also contain the O14A13.exe): CFG Lock.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted July 23, 2020 Moderators Share Posted July 23, 2020 Use the Universal Backup toolkit from this guide to extract the ROM file. You might get a warning from Windows Link to comment Share on other sites More sharing options...
Loctran Posted July 23, 2020 Author Share Posted July 23, 2020 @Jake Lo I've tried this before and I've receive this error: Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted July 23, 2020 Moderators Share Posted July 23, 2020 Place a check mark next to Custom and change the value to a different value than 64k (I suggest the last one) Now you should be able to Read and Backup Link to comment Share on other sites More sharing options...
Loctran Posted July 24, 2020 Author Share Posted July 24, 2020 It now can read my BIOS it now and make a backup (although there is a problem in the parse: "FileHeader: file alignment 10h is greater than parent volume alignment 8h") but I still can't find CFG Lock and I've tried to extract it into a readable file but didn't work, too. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted July 24, 2020 Moderators Share Posted July 24, 2020 attach the ROM file Link to comment Share on other sites More sharing options...
Loctran Posted July 24, 2020 Author Share Posted July 24, 2020 @Jake LoHere is my ROM file then: Fixing CFG Lock.zip Link to comment Share on other sites More sharing options...
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