If you are looking to update your own device, the process generally follows these steps:
Reduced lag in navigation and app switching. zxdz 01 firmware update
Power off your ZXDZ 01 and boot it into its dedicated "Flashing/Bootloader" mode (usually achieved by holding a specific combination of buttons, such as Power + Volume Down, while plugging it in). If you are looking to update your own
The head unit does not recognize the USB drive containing the firmware. such as Power + Volume Down
What or error are you trying to fix with this update?