Power off your phone completely. For Unisoc T612 devices:

While the lack of manufacturer support is a major hurdle, the passionate XDA community has built a knowledge base that makes updating these powerful but problematic units possible. For anyone experiencing issues with their Chinese Android head unit, exploring the community-driven path for an update is often the best, and sometimes the only, way to breathe new life into your car's infotainment system.

: Ensure the device is connected to a stable power source (e.g., car engine running or a 12V power supply) to prevent it from shutting down during the process. Firmware Update Guide 1. Prepare the Installation Media 2020 NAVIGATION/MULTIMEDIA Receiver Firmware Update Guide

Contains the core OS files, framework assets, and system-level applications.

Click the (Start Downloading) to begin the flashing process.

Never power off the device during an upgrade. If your local power grid is unstable, plug the TV or box into an Uninterruptible Power Supply (UPS).