If you need to backup your device data, back it up before performing this upgrade. Download and extract App Loader (Windows). > LINK

  1. Connect your BlackBerry 10 Dev Alpha device to your computer.
  2. In the location where you extracted the application loader, run the batch file WipeReload.bat.
  3. If you have a password set on your device, type your password when prompted.
  4. After your device restarts, complete the set up wizard.