Samsung SGH-t609 - Manual (Page 122)

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Note: Not all SIM cards have a PIN2. If your SIM card does not, this menu
does not display.
Software update
This option lets you download Over-The-Air phone
software Updates from T-Mobile that improve the
performance of your phone. Only the internal software
is updated. No phonebook entries or other information
saved to your phone will be deleted.
Important! Make sure your phone battery is fully charged or connect your
phone to the Travel Adapter before selecting this option.
To update your phone’s software:
1. In Idle mode, press the Menu soft key to access Menu
mode.
2. Using the Navigation keys, scroll to the Settings icon.
Press the Select soft key or the key to enter the
Settings menu.
3. Using the Navigation keys, highlight the Software
update option and press the Select soft key or the
key.
4. Follow the onscreen instructions.