If a third-party POS app is restricting access, check if there is an administrative PIN provided by the software vendor, or use the factory reset method to wipe it. Summary of Solutions Best Action Forgot PIN (Device Online) Use Partner Portal - Remote Clear Password Forgot PIN (Device Offline) Hard Reset (Power + Volume Down) Device Frozen/Looping Force Reboot (11s Power Button) Need Developer Access Enable Debug Mode in Partner Portal
Load the found inside your downloaded firmware folder into the tool. sunmi v1 unlock
If the device is "locked" into a specific app (Kiosk Mode), try these steps: Long Press Power : Hold the power button for 2–3 seconds. Exit Option : Look for an "Exit Kiosk" option in the top right or within the power menu. Common PINs If a third-party POS app is restricting access,
Remote management software that restricts access to the settings menu, prevents USB debugging, and blocks unauthorized app installations. Exit Option : Look for an "Exit Kiosk"
When prompted, go to > Security and check the box for "Allow installation of apps from unknown sources" . Complete the installation. Troubleshooting Common Unlock Errors
Using tools found on GitHub to overwrite the restricted OS with a "Global" or "Stock" version. If you'd like to proceed with an unlock, tell me: Does it currently have a Deliveroo/Just Eat logo on boot? Do you have a Windows PC and a Micro-USB cable ?
If you found this guide helpful, share it with the POS community. For advanced modifications, visit the XDA Developers forum dedicated to Sunmi hardware.