I had the same problems and none of the fixes here worked. I took the phone & computer to my local Apple store and they said the firmware was corrupted. We reinstalled iOS5 & reset the phone to factory original. Everything works perfect now.
You need to do a restore on your phone and go back to factory settings. I know it's a pain but something in the file system is corrupt. The reason some are reporting fixes by deleteing VM or not syncing iCal or what ever is because on their phone this is where the corrupt file is located. When they turn off the syncing for that specific function or delete those files it is basicly getting rid of the corruption or corrupted files and then iTunes can do its' thing. Do a complete restore -if this does not work then you either have a coonection issue, such as your cord is going bad or a hardware problem in the phone or computer.
I did a Restore through iTunes sometime back and the problem is solved for me
All one needs to do is the following
1. Connect your iPhone through the USB cable
2. Take a backup in iTunes, so that all your data is safe (It is automatically taken anyways)
3. Click on "Restore" in iTunes. iTunes will download the software (the download took 2 hrs for me.. around 790 MB)
4. After download, the restoration (factory setting) takes around 45 minutes. Once the restore of the s/w is complete, you can choose in your handset if you want the device as a fresh device or to restore the backup from iCloud or iTunes. Choose the relevant option and your contact, notes, etc will be backed up
5. The phone will restart again and will sync the Apps, Music, etc from your iTunes to iPhone
6. Voila your iPhone is ready to use :-)
Windows Vista Operation System
Hope this was helpful
I had this problem with my iPhone 4; turning off the Photos application allowed sync to complete. Evidently, the Photos app was locking something that the sync was trying to update. Now my iPhone will sync each time with no problems.
However, I then had the problem with my iPad (original), after 5.1.
I restored to factory settings but still could not sync correctly, getting stuck on the sync. Half the music disappeared. I restored a second time and got the same result. Then I just sync'd again, without restoring, and the remaining data reappeared. I'm a little scared to sync it again.
Are you doing a full restore? You can do a restore from backup or restore to factory settings. You want to do the later. Also, try a different cable to connect your iPad to your computer. If your cable is going bad it can prevent or corrupt the sync. If that fails I would visit your local apple store and have them check the hardware for problems, be sure to take your laptop & cable with you.
I have a couple of questions. First, do you download anything from Audible.com and if so does it work or does it also lock up iTunes? Second, do you download from iTunes and does it work?
I ask these questions because it has been my experience, that downloading from Audible locks up iTunes every time no matter what iterations I use on iPhone or iTunes, but when I download a book from iTunes everything works smoothly, no lock ups no error messages.
Like you I have tried just about everything suggested on this and other forums with no luck, I would let it be and just download from iTunes but the file is so large and it takes quite awhile to accomplish the process. If you happen to know if there is a way to make the file smaller I would appreciate any advice.
** If you are in a rush, scroll down to see the solution that worked for me **
I started having this issue with my iPhone 3GS running iOS 5.0.1 after I enabled the option to sync photos. After reading the posts here and in another thread, I was convinced that it had something to do with the voice memos as I noticed that my voice memos were being duplicated in the voice memos app. However, even after deleting all of the voice memos from my iPhone, I still had this syncing problem. I then noticed that in iTunes on the left side under Devices -> <device name> -> Voice Memos, there were two voice memos showing up even though I had deleted these from my iPhone. Strangely, I could even play these back in iTunes. That told me that something was not right. In addition, there was a book showing up under Books even though I had deleted all books from the iBooks app.
By enabling the "manually manage music and videos" option from the device summary page, I was able to delete the two voice memos and book. However, doing this did not fix the syncing problem.
I tried various other workarounds mentioned in this thread, short of doing a restore, all without success. I was about to give up and do a restore when...
** Solution that worked for me **
I came across this page http://apple.stackexchange.com/questions/8758/why-is-itunes-duplicating-my-voice -memos and it mentioned using Phone Disk (http://www.macroplant.com/phonedisk/) to remove voice memos from the iPhone file system.
Using Phone Disk I browsed to the Recordings directory on my iPhone and I could see a bunch of .m4a files for the voice memos (including the duplicates), even though I had previously deleted these memos from the Voice Memos app. So I deleted everything under the Recordings directory. I also deleted everything under the Books directory for good measure. After doing this, my iPhone syncs normally again!
Anyways, I hope this helps those of you who haven't been able to resolve this issue and who do not want to do a restore. Of course, it goes without saying that you should make backups (by copying files to your machine) before deleting anything.
Do you know whether this also solves the issue on iPads? I'm wondering if I've ever used a feature like voice memos. What could I look for with Phone Disk instead?
I had this problem, would be stuck on step 5 of 5, waiting for items to copy, for over an hour each time I did it! Finally I followed someones post and it worked immediately!!! Do the following:
1. locate your iphoto in finder
2. right click and select show package contents
3. delete the folder "iphone photo cache" or "itunes photo cache" <---I forget the actual name
4. move to trash and repeat for each iphoto library you have on your computer
5. EMPTY TRASH
6. now go to itunes and try syncing.
Worked immediately after I deleted these folders so best of luck