Works (for now)! echo "Night Shift Enable Script for Unsupported Macs" echo "version 1.0" echo "Script made by Isiah Johnson (TMRJIJ) / OS X Hackers" I applied and ran Isiah's script on a handful of 2011 iMac desktops today - NO PROBLEMS https://github.com/TMRJIJ/Night-Shift-on-Unsupported-Macs Be sure to disable SIP first: Click the menu. Select Restart... Hold down command-R to boot into the Recovery System. Click the Utilities menu and select Terminal. Type csrutil disable and press return. Close the Terminal app. Click the menu and select Restart.... Drag "Enable NightShift.sh" into terminal and press return Follow onscreen instructions... then restart when prompted You're done - enjoy Night Shift on your older Mac ! Hint - Night Shift settings are in "Displays" on "System Preferences..." Thank You Isiah Johnson (TMRJIJ) and OS X Hackers !!!