If the window says "Connecting to Bootrom," and nothing happens, try a on the phone (hold the Power button until it reboots) while it is still connected to the PC.
: Try a different USB port (preferably a USB 2.0 port) or a different cable. Check Windows Device Manager to ensure there are no driver errors. blackberry classic flash file
You might need to download the BlackBerry Classic flash file for several reasons: If the window says "Connecting to Bootrom," and
that contains the entire OS, boot files, and system radio software. Automatic Device Recognition " and nothing happens