You may need to enter the "Factory Settings" (usually code 8888 or 1234 ) and recalibrate the screen or change the "Touch Panel" configuration.
Copy the firmware files (usually update.zip or a collection of .bin and .img files) directly to the (not inside a folder). 2. Initiate the Update Insert the USB drive into the head unit's primary USB port.
Before downloading any files, you must ensure they are compatible with your specific board. Flashing the wrong firmware can "brick" your device (render it unbootable). Go to > System > About Device . Look for the Build Number or MCU Version .
A Russian forum that is the most comprehensive resource for these specific chips (requires a translation tool). Step-by-Step Installation Guide
If the device hangs on the logo, you may need to perform a "forced flash" by holding the reset pinhole while powering on the unit.
If it doesn't, go to > System > System Updates and select USB Update . 3. The Flashing Process