This information is provided for educational and troubleshooting purposes only. You should only attempt to bypass or reset passwords on devices you own. Unauthorized access to a device you do not own is illegal.
Do not enter "NATV" as a password. It is a firmware code name, not a passcode. Entering random text may lock the device for longer periods (exponential backoff).
The identifier refers to a specific hardware and firmware configuration used in high-performance Android car head units . It is most commonly associated with devices powered by the UNISOC UIS7862S (UMS512) chipset. Device Context
Search Google or XDA Forums for: "UMS512_1H10_NATV firmware" or the exact model number printed on your device's circuit board.
The most common reason for this search is that a user has accidentally (or intentionally) booted their Android device into (also known as Engineer Mode or Auto Test Mode). On Unisoc UMS512 devices, this mode is often accessed by holding Volume Up + Power or both volume buttons during startup.
If you cannot find the password, do not give up. Use the method:
