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To update the firmware on your ZXDZ-01 car head unit (typically an Android 8.1 device based on the MT/AC8227L processor ), you can use either an online OTA update manual local update using a USB drive Preparation Identify your current version: Settings > System > About Device

The ZXDZ 01 firmware update is essential for several reasons:

If you are looking for general firmware update procedures typically found in such "papers" or manuals, they usually follow this sequence: Preparation