Facetime, iMessage (need to call Apple Support, seems like my Apple ID has been blocked for this device for attempt at my first build)
DRM broken, only can play FairPlay 1.x
Remap Brightness keys to Fn+PrtScr & Fn+Pause Break. And Volume keys to Fn+F11 (NumLock) & Fn+F12 (ScrLock). And i am also disable Fn+Arrow key, you can see SSDT-PS2K to change this if you don’t like my mapping.
Mine have disabled CFG Lock, so Kernel patch for CfgLock in config.plist have been disabled. Enable Kernel patch for CfgLock if yours not disabled yet. I had write the guide in my blog (Bahasa Indonesia) Disable CFG Lock pada Acer E5-476G.