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DELL E5570 macOS Sierra


lavhuh

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I meant these steps:

 

1) Universal BIOS Backup ToolKit 2.0.exe - to backup the BIOS (DellInc.-1.5.3.rom) 

    At time of writing - BIOS version 1.5.3

2UEFITool.exe to find the module labeled Setup and extract the PE32 image section (setup.bin)

  Update

  For Dell Only: Search with this GUID then extracting the PE32 body under it would be faster /easier than finding the module per guide

          899407d7-99fe-43d8-9a21-79ec328cac21

3) Universal IFR Extractor.exe to extract setup.bin to a readable text file

4) Use notepad to search for DVMT in the text file,  2 were found at 0x432 and 0x433

    Both with value of 0x1 but only 0x432 needs to be set to 0x3

5) Format a USB drive to fat32 and create a folder name EFI (SD Card works too)

6) Download the EFI Shell and extract the Boot folder into the newly created EFI folder

     i.e.. /EFI/Boot/bootx64.efi

7) Boot system with the USB and select UEFI Boot

8) At the grub prompt, enter these commands, hit enter after each command, then exit and reboot

 

    setup_var 0x3

 

 

but if you opt for the kext, you need to build it with Xcode from the source code provided.

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