Unless you need a specific bug fix or language pack, staying on a stable final OS version (e.g., 6.0.0.2855) is preferable. For hobbyists, the 9780 is best preserved with its original OS or a clean, de-bloated hybrid OS from legacy communities.

– Since RIM (now BlackBerry Ltd.) no longer provides OTA updates, you’ll need an autoloader file (.exe) for the 9780. Look for OS version 6.0.0.xxx (last official release was around Bundle 2949 / v6.0.0.723). Reputable BlackBerry forums (like CrackBerry) may have archived links.

Navigate to: C:\Program Files (x86)\Common Files\Research In Motion\AppLoader .

Since a firmware update erases everything, perform a manual backup. Updating my Blackberry 9780 to latest version firmware