BlackBerry - BlackBerry | Wireless Handheld Devices, Software & Services from Research In Motion (RIM)
Install it, then look for the file called javaloader.exe in the bin directory of wherever you install the SDK. then simplay run it from the command line (e.g. javaloader -usb wipe). Use the desktop software's app loader first to detect the correct USB port, then run the command. The BB MST be connected directly via USB to the PC.
this is a DOS program so run it from the command line.