Close and any other BlackBerry-related software. Flashing Process : Turn off your BlackBerry Z3. Run the downloaded autoloader file on your computer.
Once the developer autoloader is flashed, you have a factory-fresh Z3. Now enable developer mode:
BlackBerry Desktop Software or BlackBerry Link installed (to ensure the correct USB drivers are present). At least 50% battery charge on the Z3. Step-by-Step Installation Guide Follow these steps to flash your BlackBerry Z3: