First of all, i have iphone 3gs, ipad1 and ipad2 authorised with my win7 PC (64 bits) and one ipad1 and itouch 1st authorised with an iMac, iphone 4 and itouch 2nd with a xp netbook.
Installing ios5 went very fine with the iphone 4 and xp in the same day when ios5 released.
But with the iphone 3gs, ipad1 and ipad2; i had no luck up to now.
The main problem is, after i have upgraded to itunes 10.5 and when i click the edit>preferences, itunes freezes. After approximately 5 minutes, the preferences window opens. I can navigate all the preferences smoothly except for the devices tab. When i click it, it again freezes for 10 mins, after that i see an empty backup list. I know that my backups are in my HDD (i check the backups at its location).
Also when i tried to make a new backup, an error window says something like it can not communicate. When i try to make the communication tests, it passes.
I' ve searched the net and found those :
I' ve done anything in those articles and with non of them i could succeed.
I' ve uninstalled itunes and components in the order the article describes. Deleted configuration files, checked anything that remains. Opened a new account. Disabled all non ms services and programs. Deleted all my podcasts, changed them to update manually. Anything that is written in those articles for several times and came to a conclusion that i think the problem is with this version of itunes.
The worst thing is not only being able to use woderful ios5, my ipad2 64 gb + 3g' s microphone has a failure. I will change it at the service. But as soon as i can' t make a backup and update to ios5; i cannot.
So, i' am really very sad about this and i please from Apple and all the community to find a solution and/or Apple, please find the bug and release an itunes update with a fix soon.
Apple, i can send you any file that you can request from me to speed up the process.
And community please, don' t write anything without reading the links i have written above!!!
Today, after several and several hours of working on the issue; i think i solved the problem.
But there is a problem again here; i did several things that most of them maybe stupid and
unnecesary for the case, but i will write what i remember. They may help to the others.
First, i removed all the usb devices including the mouse and then uninstalled all the usb drivers under
device management>universal serial bus..thing (i mean the usb root hub, not say intel host controller things). i disabled the sd card and memory stick controllers and ricoh ieee1394 OHCI thing. i uninstalled storage shadow copies also and restarted windows: the problem was still existing.
After reading on the net, some in this forum recommended to check "C:\Program Files (x86)\Common Files\Apple\" location for "Mobile Device Support. I had only "Apple Application Support" there. Then i copied the files in it to "Mobile Device Support" as the recommend.
I also searched for the file "libxml2.dll" (which "Apple Application Support" also has this file) in C drive and tried to uninstall every program that has this file including evernote.
After that, i edited my PATH (right click Computer>properties>system>advanced>...variables...) and removed unnecessary entries (especially if you have the program UltraEdit or HypoEdit programs).
I uninstalled everything in the Apple's order. then reinstalled. I realised that there is an another folder in the "C:\Program Files (x86)\Common Files\Apple\" location as "CoreFP".
I extracted the "iTunes64Setup.exe" setup file with winrar into a folder.
I restarted itunes and again saw the same problem.
Then i finally went to the folder: "C:\Program Files\Common Files\Apple\Mobile Device Support\Drivers\" and deleted the four usb driver files. Then i went to the setup's extracted folder and ran the "AppleMobileDeviceSupport64.msi" file (my pc is 64bit). I chose repair and ran itunes without any problem.
So, after 146 days of torment, i will sync and backup and upgrade again
This means that itunes setup has a bug; it does not update (or check) the mobile device drivers' condition or version. Because during my lost time of trials, i could downgrade to the 10.4.1 version of itunes and it simply works.
And think that i am an end user. Programmers in Apple being paid for their ignorance.
Hope one of these things will help you also.
Have a nice day!