Firmware - Change Update On Blackberry 9790 Bold Exclusive

Before changing the firmware, skipping these steps can brick your device.

Click . Your phone will eventually show "Error 507" (this is normal; it means the OS is gone). Firmware Change Update on BLACKBERRY 9790 Bold

Use BlackBerry Desktop Software to back up contacts and messages, as this process will erase all device data. Before changing the firmware, skipping these steps can