Updated my M7 to Lollipop 5.0.2
Battery level suddenly dropped after update and battery level seemed to not be displaying properly. Was solved by a reboot and then recycling the battery (pressing power button+volume up button simultaneously for 30+ seconds)
Seems OK for now. No effect on GSM unlock or Reliance CDMA settings. Phone working OK in both modes. M&7 got the Lollipop update before the M8!!