Previous versions of the BlackBerry 10 device simulators
If you want to test your app on a previous version of the BlackBerry 10 OS, you can download different versions of the BlackBerry 10 device simulator here. To ensure your app is tested on the correct OS, download the simulator version that has a build number matching the BlackBerry 10 OS version number (accessible from the Settings > About > OS screen on your BlackBerry 10 device).