Zenfone — 5 Firmware Downgrade

Tap the and disable "Auto-download system update".

To prevent your phone from immediately updating back to the version you just left: Go to . Zenfone 5 Firmware Downgrade

Power off the phone, then hold Power + Volume Up to enter Fastboot/Droidboot mode. Command Execution: Connect the phone to your PC via USB. Open a command prompt in your ADB folder. Tap the and disable "Auto-download system update"