For most users, the safest and easiest way to update the firmware is via Over-The-Air (OTA) updates. This ensures you are installing a stable, official version meant for your specific hardware revision.
Steps to Update:
Note: Ensure your battery is above 30% before initiating an update to prevent the device from powering down mid-installation. Sunmi P1 4g Firmware
This is a "Soft Brick." You will likely need to use Method 2 (Sunmi Assistant) to re-flash the stock firmware.
Occasionally, updates reset printer settings. Ensure your POS application has the correct paper width settings (usually 58mm for P1) and check if you need to reinstall the Sunmi Printer Service APK. For most users, the safest and easiest way
A: Enter recovery mode (Volume Up + Power) and select “Wipe cache partition.” If that fails, select “Factory reset.” If still looping, you need to reflash firmware using the Flash Tool method—seek professional help.
Sunmi does not host firmware on public file-sharing sites like Mega or MediaFire to prevent the distribution of malware. To get the official files: Note: Ensure your battery is above 30% before
The Sunmi P1 4G is a marvel of integrated hardware, but its firmware is the silent operator keeping your sales moving. Whether you are troubleshooting a lost 4G signal after an update or prepping a fleet of devices for deployment, understanding the firmware’s region, build number, and update policy is not optional—it is the difference between a reliable terminal and a $300 paperweight.
Pro tip: Before flashing any new firmware, use a tool like Sunmi_Backup_Utility to dump your current modem partition. If the new build fails, you can always restore your working 4G radio.
Disclaimer: Modifying firmware on payment terminals may violate PCI-DSS regulations and local telecommunications laws. Always consult with your payment service provider before performing any system-level changes.