Change your USB port (use a rear port on desktop PCs) or reinstall the BlackBerry USB drivers.

The latest version of the BlackBerry 9790 flash file is OS 6.1.0.53. This version includes several bug fixes, security patches, and performance enhancements.

There are several reasons why you might want to update the BlackBerry 9790 flash file:

Run the downloaded on your computer. Follow the on-screen prompts to install it. It will extract the firmware files to a specific system directory. Step 2: Delete the Vendor.xml File (Crucial Step)

A : Always double-check that any file you download is for the BlackBerry Bold 9790 and not for a different model. Downloading the wrong firmware will not work and could cause more problems.

Change the USB port you are using. Motherboard ports on the back of a desktop PC provide more stable power than front ports or USB hubs. Ensure the BlackBerry USB drivers are fully updated. Error: Stuck on JVM 507 Error screen after flashing