Enable Night Shift on macOS 10.13 for MacBook Air 4,1+

README.md

Enable Night Shift on macOS 10.13

Apple made Night Shift check for compatibility to exclude older hardware. An easy way to enable it is to patch the CoreBrightness binary. This Gist contains a patch file for enabling it for the MacBook Air 4,1 (mid-2011).

Requirements

• macOS 10.13
• MacBook Air 4,1 or newer
• Developer CLI tools - xcode-select --install
• Homebrew - /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
• xdelta3 - brew install xdelta

Steps

1. Disable SIP

   1.1 Boot into recovery mode (⌘ + R) and open Terminal

   csrutil disable
   reboot

2. Backup the old framework

   cp /System/Library/PrivateFrameworks/CoreBrightness.framework/CoreBrightness CoreBrightness.old

3. Patch the existing (old) framework

   xdelta3 -d -s CoreBrightness.old CoreBrightness.xdelta3 CoreBrightness

4. Sign the shit

   sudo codesign -f -s - CoreBrightness

5. Replace the existing binary with the new and improved version

   sudo cp CoreBrightness /System/Library/PrivateFrameworks/CoreBrightness.framework/CoreBrightness
   sudo reboot

6. Re-enable SIP

   6.1 Boot into recovery mode (⌘ + R) and open Terminal

   csrutil enable
   reboot

7. See System Preferences > Displays > Night Shift

Original Instructions

https://pikeralpha.wordpress.com/2017/01/30/4398/

CoreBrightness.xdelta3