Blackberry Mobile Upgrade Tool Link
# Enter upgrade mode device.reboot_to_upgrade_mode()
Once the tool says "Success – Device rebooting," wait for the device to boot to the initial setup screen (language selection). You may see a "BlackBerry ID required" screen. Since BBID servers are mostly offline, use a local-only setup or skip if possible. blackberry mobile upgrade tool
Allows users to "Reload" the operating system if the device becomes unresponsive (the "nuke and pave" method). # Enter upgrade mode device
Device Recovery: Reinstalls the operating system if the device is stuck on a boot loop. blackberry mobile upgrade tool