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.
On the device, go to Settings → Security and Privacy → Security Wipe . how to reset blackberry 10 os to factory settings
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. Here’s a clear, step-by-step guide you can use
When the phone vibrates, release the Power button but continue holding the Volume Up and Volume Down keys. Connect your BlackBerry to a computer with BlackBerry