1. UPDATE RECOVERY
2. FACTORY RESET
3. INSTALL ROM, GAPPS
4. WIPE CACHE & DALVIK CACHE
5. REBOOT
PA 3+ UPDATES DO NOT NEED A FACTORY RESET,
BUT YOU NEED TO INSTALL GAPPS ASWELL.
Hey mate I don't have much of a clue about Android etc. Could you explain to me what update recovery is please?