Samsung SPH-M520ZSAQST - Manual (Page 96)

70 Section 2B: Controlling Your Phone’s Settings
Updating Phone Software
The update phone software option allows you to download and update
the software in your phone automatically. Only the internal software is
updated; no contact entries or other information saved to your phone will
be deleted.
To set your phone to Airplane Mode:
1. Select Menu > Tools > Update Phone SW from standby mode.
2. Follow the onscreen instructions.