(including RK3228A, RK3228B, and RK3229) is a budget-friendly chipset found in millions of generic "MXQ Pro 4K" and similar Android TV boxes
Firmware for these devices is rarely hosted by a single manufacturer. Instead, you must rely on community repositories and dedicated firmware databases: android rk322x box firmware link
– Very popular in forums. Requires Multi-version selection tool. Stock Android 7
Common for newer RK322x boxes.
Never trust the original seller’s firmware link. Those are what broke your box in the first place. Use the Google Drive folder above, and always flash with Mask ROM Mode (short pins). Bottom line: Never trust the original seller’s firmware
: Optimized builds for RK322x/RK3228/RK3229 devices are available on the LibreELEC Forum . These typically run from an SD card to avoid bricking internal memory.