Apple iPod touch iOS 4.3 - Manual (Page 216)

Updating and Restoring iPod touch Software
You can use iTunes to update or restore iPod touch software.
 If you update, the iPod touch software is updated. Your downloaded apps, settings,
and data aren’t affected.
Note: In some cases, an update may also involve restoring iPod touch.
 If you restore, the latest version of iPod touch software is reinstalled, settings are
restored to their default, and all data stored on iPod touch is deleted, including
downloaded apps, songs, videos, contacts, photos, calendar information, and any
other data. If you’ve backed up iPod touch with iTunes on your computer, you can
restore data from the backup at the end of the restore process.
Deleted data is no longer accessible via the iPod touch user interface, but it isn’t
erased from iPod touch. For information about erasing all content and settings, see
“Resetting iPod touch” on page 166.
If you use a Bluetooth headset with iPod touch and you restore settings, you must pair
the Bluetooth device with iPod touch again to use it.
For more information about updating and restoring iPod touch software, go to
support.apple.com/kb/HT1414.
Updating iPod touch
Make sure you have an Internet connection and have installed the latest version of
iTunes from www.apple.com/itunes.
Update iPod touch:
1 Connect iPod touch to your computer.
2 In iTunes, select iPod touch in the Devices list, then click Summary at the top of
the screen.
3 Click “Check for Update.” iTunes tells you if there’s a newer version of the iPod touch
software available.
4 Click Update to install the latest version of the software.
216 Appendix B Support and Other Information