you may need to check your box's firmware version via Settings > Device Preferences > About > Build Number to ensure you are downloading the correct patch.
The RK3229 is not dead. In fact, 2026 is seeing a renaissance of these small, cheap boxes thanks to dedicated developers creating that bypasses manufacturer neglect. rk3229 android 90 firmware exclusive
Download the official flashing utility tool. FactoryTool is generally recommended for .img single-file firmware installations. you may need to check your box's firmware