Here’s a full, practical guide to understanding and working with — a term often used in DIY firmware modding, TV boxes, and handheld gaming devices.

Click the button. This is recommended over "Upgrade" as it performs a clean wipe, ensuring the new Android 9.0 architecture installs without conflicts from old data. ⚠️ Important Troubleshooting Tips

: The standard tool for flashing .img firmware files to Rockchip devices.

He didn't load another bloated Android image. Instead, he flashed a custom Batocera build

Click (the right arrow icon). The process takes 2-4 minutes.