The process of updating the firmware on a BlackBerry 9790 Bold involves the following steps:
A high-quality micro-USB cable and a computer running Windows. 2. Step-by-Step Installation Procedure Step A: Device Preparation Firmware Change Update on BLACKBERRY 9790 Bold
During installation, the BlackBerry installer writes to the Windows registry. Security software can falsely flag the radio stack update as a threat and interrupt it. The process of updating the firmware on a