kashif Posted September 13, 2020 Share Posted September 13, 2020 anyone has open core efi folder for dell 6440 Link to comment Share on other sites More sharing options...
Administrators Hervé Posted September 13, 2020 Administrators Share Posted September 13, 2020 Refer to the E6540 Big Sur thread posted in this very section. Link to comment Share on other sites More sharing options...
kashif Posted September 15, 2020 Author Share Posted September 15, 2020 @Hervé i have installed big sur using the efi however i am getting some problems my etherner, touchpad and keyboard is not working and the wifi as well i am using atheros 9285 for wifi and screen randomly turns black Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted September 15, 2020 Moderators Share Posted September 15, 2020 post the EFI folder + IOReg fie Atheros are not supported beyond High Sierra therefore you'll need to restore IO80211Family.kext from HS. For Big Sur, you'll need to 1st disable SIP, find and delete Snapshots, unSeal, then you can access /S/L/E. You'll have to google for the instructions, I don't have it off hand. After that, you'll still need to patch it to be compatible. Probably much easier to find a more compatible card. Link to comment Share on other sites More sharing options...
kashif Posted September 15, 2020 Author Share Posted September 15, 2020 Kashif’s MacBook Pro.ioreg EFI.rar Link to comment Share on other sites More sharing options...
kashif Posted September 17, 2020 Author Share Posted September 17, 2020 @Jake Lo @Hervé i wonder if you can look at it Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted September 17, 2020 Moderators Share Posted September 17, 2020 Add these updated files E6440_update.zip Link to comment Share on other sites More sharing options...
kashif Posted September 18, 2020 Author Share Posted September 18, 2020 @Jake Lo i replaced the kext and acpi folder with the ones you gave however after replacing system gets stuck at apple logo and then restarts . i even tried adding only the contents of acpi and kexts folders that you gave into already existent folder but no luck Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted September 18, 2020 Moderators Share Posted September 18, 2020 What do you mean by No Luck after just adding the files and replacing the Config? Link to comment Share on other sites More sharing options...
kashif Posted September 18, 2020 Author Share Posted September 18, 2020 @Jake Lo Stuck at Apple logo Link to comment Share on other sites More sharing options...
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