I can't back up my iphone 4 in iTunes 9.2.... somebody help me please!!

Sync does a backup as a matter of course. Just do a sync.

Phil

I assume you tried syncing several times and it did not automatically backup. I have the same problem and hope someone has an answer.

http://discussions.apple.com/thread.jspa?threadID=2529186&tstart=0

Hi, I have an IPhone 3G which was working perfectly until I upgraded 2 weeks ago to 4.0.1. Since then it takes 20mins or more to synchronise, but actually isnt syncrhonising anything in Microsoft Outlook incl. calendar, notes etc, and it no longer communicates with my $3000 Pioneer in car DVD/GPS/bluetooth system. Please can someone create a patch for 3G users who have foolishly upgraded, or give us clues on how to rollback the upgrade? It no longer performs either of the 2 main reasons for having this phone...HELP!

This this command line in terminal :
defaults write com.apple.iTunes DeviceBackupsDisabled -bool false

Exact. Just type the command line into the terminal.
Happy for you that it works !!!

Does anyone know the equivalent command for windows 7? I assume it would be some kind of command added to the itunes shortcut?

Any help would be really appreciated!

1. Locate your iTunesPrefs.xml file. It’s usually located in C:\Documents and Settings\username\Application Data\Apple Computer\iTunes or C:\Documents and Settings\username\Local Settings\Application Data\Apple Computer\iTunes.
Hint: If the folder Application Data does not show up, make sure that hidden files are visible in the Windows Explorer
2. Backup your iTunesPrefs.xml file
3. Open iTunesPrefs.xml using a capable text-editor (e.g. Notepad++, Ultraedit, but not MS Notepad)
4. Search for a section called User Preferences and delete snipped into the User Preferences Section after the first <dict>:

<key>DeviceBackupsDisabled</key>
<data>
dHJ1ZQ==
</data>

Good Luck !

Message was edited by: 2ni

@2ni This just might work. Although I found the file in the directory

C:\Users\NM\AppData\Roaming\Apple Computer\iTunes

and the text looks different from yours.
</data>
<key>DeviceBackupsDisabled</key>
<integer>1</integer>
<key>Documents:131</key>
<data>

Should I delete all of the above? Thanks for your help.

No. Just delete :

<key>DeviceBackupsDisabled</key>
<integer>1</integer>

But don't forget to backup your file before ! We never know...

Thanks! That totally worked!!!!!

It didn't work with iTunes 10, the file is really strange (A lot of AAAA 's)

This program worked with me: http://microseconds.com/?page_id=395 it worked with the new iTunes 10 too. Now the backup option shows when i right click my iPod icon in iTunes.