Enter your device password if prompted.
Release the volume keys. The device will enter Factory OS Recovery Mode and automatically reinstall the factory OS. how to reset blackberry 10 os to factory settings
On the device, go to Settings → Security and Privacy → Security Wipe . Enter your device password if prompted
A black screen with a red LED light may appear. Keep holding until you see the “BlackBerry” logo with a progress bar. On the device, go to Settings → Security
Here’s a clear, step-by-step guide you can use or share: Resetting a BlackBerry 10 device (such as the Z10, Q10, Z30, Classic, Leap, or Passport) erases all user data and restores the phone to its original out-of-box state. There are two main methods: a software reset from within the OS, and a hardware key method if the device won’t boot. Method 1: Reset from Settings (Device Boots Normally) Step 1: Back up your data (optional but recommended). Connect your BlackBerry to a computer with BlackBerry Link or use a local backup to an SD card.
Ensure the device is powered off completely.
