If you don't have access to a computer or prefer a more straightforward approach, you can update your BlackBerry 9780 Bold's firmware using an Over-the-Air (OTA) update:
This is the standard way to update if your carrier has released a new version for your specific device .
Note: BlackBerry Limited discontinued legacy OS support and servers (BlackBerry World, BIS/BES for OS 5/6/7). The following guide is for archival, offline, or advanced manual updating.