Installing an application update
When Internet connection is on and there's an available update for your HTC or mobile operator apps, the update notification icon appears in the status bar.
Slide the Notifications panel open, and then tap the update notification.
Updates screen opens with the list of application updates to be installed.
Tap an item to view its details, and then tap
When you're done reviewing the updates, tap
You'll be asked to restart
HTC Desire 550 if needed.