For older models or those without OTA support, you must use a USB drive (typically 32GB or smaller, formatted to ).

The system should detect the update and prompt you to begin. Do not turn off the car during this process. 2. SP Flash Tool (The "Deep" Way)

Report any bugs below.

The is a popular 1-DIN Android car head unit typically based on the MT/AC8227L processor. Updating this device generally involves either an OTA (Over-the-Air) wireless update or a manual firmware installation using a USB drive. 1. Wireless (OTA) Update

after the reboot to prevent the update cycle from starting again. Advanced Features & Fixes 5GHz Wi-Fi Activation:

Some ZXDZ units support direct downloads if connected to the internet.

If you provide more details, I can make it more informative and helpful.