Downgrading iTunes

Well, use iTunes 11. The message tells you that the library was created with a newer version of iTunes, so the library now needs iTunes 11 in order to work correctly. The Library now has information within it that iTunes 10 doesn't understand.

I don't understand why you need to use an earlier version of iTunes if it was "iOS 7 that mucked up your phone". The two things are completely separate.

You should re-install iTunes 11, and then concentrate on why your phone isn't behaving the way you expect, but without blaming iTunes. Create a post (in the iPhone dicussions area) that discusses your phone issue.

Hi,

You have a folder that contains previous iTunes libraries. You can delete the current iTunes library.itl file and move the last library file created prior to your update to 11 to replace the delete file. You will need to rename this file to iTunes library.itl.

Jim

EmilyM3315 wrote:

Alright, so I downloaded iOS7 for my iPhone 4 and long story short, it completey ruined my phone and I need to re-download iOS 6.1.3 and install it

There is not now, nor has there ever been a supported way to downgrade the iOS on any iOS device.

Therefore there is no need to spend time trying to downgrade iTunes on the computer.

No, there is no supported way to downgrade the iOS. That is not the same as saying it is impossible to do.

Since it appears you are perfectly capable of using Google to find solutions, try using Google to find a solution to downgrading iTunes, it's actually very simple.