disable backup on iphone

自从买了iphone以来一直对apple product 的人性化设计为之叹为观止， 可是偏偏这个itune就是特别的难用。 每次sync的时候一定要吧整个iphone的东西backup起来。。 我的iphone大概也只放了3-4G的data, 那个backup 已经是不能再龟速的龟速。 而通常我想要sync的东西也只是calendar而已。。 比较FT的是， itune竟然没有一个option可以在sync之前disable 掉这个backup. 想要disable掉这个backup, 居然还要付诸于类似改registry的方法：

Disabling the slow iTunes Backup on Windows is a little more tricky, but it works. First of all close ITunes and then follow these steps:

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 paste the following snipped into the User Preferences Section after the first :

   DeviceBackupsDisabled

dHJ1ZQ==


   After you've done that it should exactly look like the screenshot on the left.

5. Save the file and restart iTunes. Backups should now be disabled. To enable backups again delete the XML Snippet from iTunesPrefs.xml file.