iPhone 4 will not back up at all :/

[rhiannonthomas]

I'm trying to upgrade to the 4.2 update, but the iPhone will not back up "because the back-up was corrupt or not compatible with the iPhone."

I've :
*Updated to the latest iTunes
*Gone into Edit > Preferences > Devices > Device Backup > Delete Backup (I deleted an iPod backup. The Device backups is now empty
*Reset Sync History.
*Uninstalled / Reinstalled
*Delete back ups manually

It still won't let me back up the phone, I have no idea what to do. Anyhelp would be greatly appreciated. I've got the latest iTunes and the iPhone is on Version 4.0.2.

 

[JamesMB]

*Uninstalled / Reinstalled

I assume you are talking about uninstalling iTunes. Did you do it like this ?

Uninstalling iTunes For Mac
Uninstalling iTunes for Windows

BTW, it's a no no to double post, especially one minute apart.

 

[rhiannonthomas]

Yeah, that's what I meant. And sorry. I didn't realize it went up twice because the one froze for some reason.

 

[JamesMB]

Yeah, that's what I meant.

Did you uninstall per the instructions in the links that I posted?
If you just use the add/remove in windows, or trash the app in Mac, to uninstall iTunes, that won't do it. There are other things that you also have to uninstall.

 

[rhiannonthomas]

Did you uninstall per the instructions in the links that I posted?
If you just use the add/remove in windows, or trash the app in Mac, to uninstall iTunes, that won't do it. There are other things that you also have to uninstall.

I uninstalled it using the instructions; I also unistalled everything in order.

I've backed up and updated the phone now, but now a different laptop, but it still won't backup on this laptop.

 

[JamesMB]

I've backed up and updated the phone now, but now a different laptop, but it still won't backup on this laptop.

At least you know that the problem is not with the phone.
Here are a some links using "because the back-up was corrupt or not compatible with the iPhone", as the search criteria.
http://www.google.com/custom?hl=en&client=pub-0384375415523482&cof=FORID:13%3BAH:left%3BS:http://mroogle.*************%3BCX:MRoogle%3BL:http://mroogle.*************/MRoogleSmall.gif%3BLH:56%3BLP:1%3BVLC:%23551A8B%3BDIV:%23CCCCCC%3B&cx=011016119145480959114:kuv1aq0hily&as_qdr=all&adkw=AELymgX2cX7REzjbCnicEQTf_WHRRLpbSVAL-IBN9WILX4fGnxndzryetL55ReHxRCch8Exibu3_z4H1yTUSgh6SFouyxLCVM63BuvM0qq1wTk1i5FZ4RW4V3q4pYqD44jCcOLjqQ-s_1sg9OHk9zU0bcUFZmuYLUg&channel=5884338270&boostcse=0&&sa=X&ei=9ZFdTdu9C4P78AbcwPH9Cg&ved=0CAoQBSgA&q=because+the+backup+was+corrupt+or+not+compatible+with+the+iPhone+site%3Aforums.macrumors.com&spell=1