| Issue | Solution in Extra Quality Build | | :--- | :--- | | | Flash the "MCU 3.4" patch included in the pack to change sleep policy to "Shutdown after 30min." | | Reverse camera stays black | Go to Factory Settings (Code: 8888 or 123456) > Camera > Change signal type from CVBS to AHD. | | Bluetooth microphone echo | In DSP App > Mic Gain > Set to Level 3 (Down from 7). |

Some "Extra Quality" versions provide updated launchers (skins) that mimic Android 10 or 12, though the underlying API level often remains at 27 (Android 8.0/8.1). The Installation Process

: The safest method. Connect your head unit to Wi-Fi (via hotspot), navigate to Settings > System > System Upgrade , and check for online updates. USB/SD Card Manual Update Format a USB drive (under 32GB) to Place the extracted firmware files (typically a and another system file) directly into the root directory of the drive.

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