by Jürgen Kress
I could wipe it clean. Reload stock firmware. Send it back with a bill and a note saying “unlocked, no issues found.”
Navigate back to > System to find your new advanced tools.
for 5–15 seconds until the Sunmi logo or recovery screen appears. Use volume keys to select Wipe data/factory reset and confirm with the power button. Deep Unlock (Firmware):
5/5 stars
A: Yes, but you may need to reinstall the official Sunmi Printer Service from the Sunmi Developer Center.