It worked, keeping the stock BigSur "dyld_shared_cache_x86_64", I simply replaced the BigSur Privateframeworks CoreBrightness.framework (that essentially is only an alias) with the one from Catalina 10.15.6 and now Night Shift is working on an unsupported MacBook7,1 (
@ASentientBot you could test this attached it should work).
Note: the non-metal videoframebuffer drivers are required, and to use any patched framework you need a disabled library validation, you could use
nvram boot-args="-no_compat_check amfi_get_out_of_my_way=1"
(this is already included in my prelinkedkernel fix and USBopencore so there is no need to add it on nvram)
otherwise if you use the stock BootKernelExtensions.kc you can use this ASentientBot method (before replace the framework):
Code:
sudo defaults write /Library/Preferences/com.apple.security.libraryvalidation.plist DisableLibraryValidation -bool true
while "sudo mount -uw /" is easier but not necessary, is possible to replace the patched framework from another macOS and then make a new snapshot with the replaced framework.
(
@hvds you could test it should work also on your MacBookPro5,2 , just replace the framework in ~/Snapshot/System/Library/PrivateFrameworks/ with the same method you used for replacing AppleHDA.kext)
I attach two proof pictures and the CoreBrightness that I patched with pikeralpha method.
This attached should allow Night Shift on any BigSur unsupported mac, use it from BigSur beta 3 or later (because apple from this version changed the IOKit from 10.16 to 11.0 ).
