Once Odin shows "PASS!", manually reboot into recovery by holding immediately as the screen goes black. Step 3: Install the Custom ROM

Force restart the phone by holding Volume Down + Power, and immediately switch your grip to the moment the screen goes black to boot directly into TWRP. Step 2: Wiping the System

Power off your device. Hold (older A9 models) or connect to PC while holding volume buttons to enter Download Mode .

To install custom software, you must replace the stock recovery with Team Win Recovery Project (TWRP).

Access modern Android features, updated app permissions, and refreshed system APIs.

This process will completely wipe all data on your phone.

Go back to the main Settings menu and open . Enable USB Debugging .

The primary appeal of a custom ROM for the A9 Pro is the promise of and revitalization . Officially, the A9 Pro 2016 peaked at Android 8.0 Oreo. By installing a custom ROM, users can bypass these manufacturer-imposed limits, potentially accessing versions like Android 11 or even higher through community-developed ports like LineageOS or Evolution X. These ROMs offer several key benefits: