How to update rooted android os

Warning: Rooting may void warranties on the phone from both the carrier and the manufacturer.
  1. Backup:
  2. Install ADB
  3. Search for your phone here. Look in the "Original Android Development" section for rooting/unlocking instructions. Usually you need to unlock your device before you can use a custom recovery, and you need a custom recovery to flash superuser (root).
  4. Download superuser.zip, a stable rom/kernel, and place them on your sdcard. (Rom/kernel is optional. You don't need to flash them for root. If you can't find superuser, flashing a Rom will usually come pre-rooted so try that.)
  5. Once rooted you can now flash a recovery (Clockworkmod or TWRP) using ADB.
  6. Once the recovery is flashed via ADB you can now reboot into it and flash the appropiate SU.zip, Rom and kernel. (Be sure to wipe data/cache/dalvik if flashing a rom and kernel). SU.zip needs to be placed in the /system partition and you don't have access to that partition until you have a custom recovery.
Alternate Option: CyanogenMod Installer
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