To ensure all personal data is permanently removed and the device is in a "like-new" software state, a full flash is superior to a factory reset.
: Most files support OS 10.3.2 or 10.3.3, which was the final major update for the Q10. Blackberry Q10 Flash File--------
Once the process reaches 100%, the phone will automatically restart. Important Notice on Activation To ensure all personal data is permanently removed
: You do not need BlackBerry Link or desktop suites running to flash the phone (though computer drivers must still be installed). Blackberry Q10 Flash File--------
Go to: Settings → Update & Security → Recovery → Advanced Startup → Troubleshoot → Advanced Options → Startup Settings → Restart → Select "Disable Driver Signature Enforcement" .