The "flash file" refers to the firmware (OS) used to restore or update the device. For the 9790, this typically involves BlackBerry OS 7.0 or 7.1 Software Utility

You're looking for information on the BlackBerry 9790 flash file. Here are some helpful details:

Flashing your device may void any remaining warranty (highly unlikely for a 2012 model) and carries inherent risks. The author is not responsible for data loss or hardware damage. Always double-check file integrity before proceeding.