I have a friend who was going to sync her phone with my computer to get the new update.. how do i add her phone with out her losing everything on her phone and not getting all my info on her phone..

Question

i have a friend who was going to sync her phone with my computer to get the new update..  how do i add her phone with out her losing everything on her phone and not getting all my info on her phone..

Answer 1

First, create a separate login on your computer for your friend. Do this BEFORE you do anything else. Next, make sure iTunes is up to date. Then:
1. Disable auto sync when an iPod/iPhone is connected under Preferences>Devices in iTunes.
2. Make sure you have one contact & one event in the supported applications(Address Book, iCal) on your computer. These entries can be fake, doesn't matter, the important point is that these programs not be empty.
3. Connect her phone, iTunes running, do not sync at this point.
4. Store>Authorize this computer.
5. File>Transfer Purchases(To make sure all purchased content on her phone will be in her itunes library).
6. Right click in the device pane & select reset warnings.
7. Right click again and select backup.
8. Right click again & select restore from backup, select the backup you just made. When prompted to create another backup, decline.
9. This MUST be followed by a sync to restore her itunes content, which you select from the various tabs, You'll get a popup regarding her contacts & calendars asking to merge or replace, select merge.
You should be good to go.