Oppo A9 — Custom Rom

He wasn't watching a movie or playing a game. He was staring at the Android mascot lying on its back with a red exclamation mark above its chest. His phone was bricked.

A custom recovery allows you to "wipe" the old OS and "flash" the new one [15]. Download TWRP : Find the official or stable TWRP file specifically for your Oppo A9 model (e.g., Flash Recovery : In fastboot mode, run: fastboot flash recovery twrp.img Boot to Recovery : Immediately hold Volume Up + Power fastboot boot twrp.img ) to enter TWRP [7]. Phase 4: Flashing the Custom ROM Wipe the System : In TWRP, go to Wipe > Advanced Wipe Dalvik/ART Cache, System, Data, and Cache wipe "Internal Storage" if your ROM file is saved there. Install ROM and select your downloaded ROM Swipe to confirm the flash. Install GApps (Optional) : If your ROM doesn't include Google services, flash the GApps .zip immediately after the ROM [7]. Reboot > System . The first boot can take up to 15 minutes [7]. Phase 5: Creating Your Own ROM (Advanced) If you intended to a ROM from scratch rather than just install one: Environment Oppo A9 Custom Rom

That’s when the Android robot fell over. That’s when the battery hit 12%. He wasn't watching a movie or playing a game