I installed macOS Mojave with working almost everything (brightness, audio, battery % etc) and wanted to try the older OS X. I installed Mountain Lion but could never got the patch to work (no audio, no brightness adjustment, battery % works however), also mounting EFI failed?!
I’m using latest Opencore version
Specs:
- 4005U 6GB RAM
- ALC233 (layout 5 works on Mojave)
- RTL8168/8111 (kext work on Mojave)
- SMBIOS MacBookAir6,2
Driver changes:
- Add OpenPartitionDxe.efi
Kext changes:
- Replace VoodooPS2 to VoodooPS2Controller by Rehabman for keyboard and touchpad (touchpad runs crazy but I use mouse so that’s alright)
Config changes:
- Kernel -> Quirks -> AppleCpuPmCfgLock -> True
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