: When the command prompt displays "Connecting to Bootrom," connect your BlackBerry 9900 to the PC via USB. Automatic Flash
This is the dangerous part. The official BlackBerry servers were shut down in January 2022. You cannot download an autoloader from RIM anymore. You must rely on community archives. blackberry 9900 autoloader
An autoloader is a self-contained executable file ( .exe ) that includes the device software, radio, and an automated loading application. Running it wipes the device completely and reinstalls the operating system from scratch. : When the command prompt displays "Connecting to