Downgrading or upgrading to a specific OS build for performance testing. Prerequisites for Flashing

He scrolled past the links for the Passport and the Classic. He needed the specific file. The was picky. It used a specific radio band configuration. If he flashed the wrong file, the phone would live, but it would never connect to a network again—a fate worse than death for a communication device.

With the command prompt window still open and waiting on your PC, connect the Micro-USB cable to the computer.

Install BlackBerry Link or the standalone BlackBerry Desktop Drivers so your PC can recognize the phone in flash mode. Finding a Safe Download Link