Unknown error (-50) while syncing iPhone 3G

I updated my iPhone to 2.01 and started getting the message: "iPhone cannot be synced. An unknown error occurred (-50)." So then the 2.1 came out and it worked once but I dropped the phone and broke the glass. After getting a new phone, I restored everything from backup and now I am getting the same message. Because my iTunes library is getting so large, I have it on a separate drive so that my internal HD has some space to breath. Does this have anything to do with it or is it something else? I have reset the phone, restarted the computer and restored it again from iTunes. Any help would be appreciated.

The problem is with iPhoto for Mac.
http://www.macosxhints.com/article.php?story=20070716051256781

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ERROR MESSAGES WHILE SYNCING IPHONE 3GS WITH ITUNES 11.0.1

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I just upgraded to iTunes 11.0.1 and although my music, podcast and apps sync with my iPhone 3GS (Version 4.1), iCal and Address Book doesn't! I get the following error messages:
After clicking OK, another dialog box appears that states:
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Until the upgrade, I had no problems syncing my iPhone 3GS with iTunes!
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Thank you very much in advance,
David Sampson.

Mmmmmm how strange.... have just closed and reopened and problem seems to have cleared.....

ITunes keep showing unknown error 48 while restoring iphone 4s. I've already followed applesupport suggestions of reinstalling iTunes, deleting previously downloaded ipsw on my computer and re-downloading it (countless times!) but still to no avail.

Hi. A very much help needed.
- iTunes keep showing unknown error (48) while restoring my iphone 4s
- I've already re-install iTunes various times
- Already delete previously downloaded 8.3 ipsw and re-downloaded it countless times
- Changed and edited hosts in windows drivers as per shown on guides
but... to no avail!!!!
I am now without any phone to be used.
HELP ME PLEASE

Hello Sean,
It sounds like you are constantly needing to restore your phone because it keeps going into recovery mode. Usually putting a device into recovery mode and restoring it can help isolate an issue to your iPhone hardware if an issue persists afterwards. I would try manually putting it into recovery mode and restoring it 1 more time:
If you can't update or restore your iOS device
http://support.apple.com/kb/HT1808
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iPhone Repair - Other Repairs
https://www.apple.com/support/iphone/repair/other/
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TehCanadian wrote:
unknown error 13019
try if the troubleshooting steps in this support article help.
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I am using Iphone 4 iOS 4.1 BB 2.10
i want to upgrade my iphone iOS to 4.2.1 but when i try to restore 4.2.1 iOS via itune it gives an unknown error 3194..
i searched in google and many forum it says that try to use new version of itune.
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i located host file in c:/windows/system32/drivers/etc/ and opened host file in notepad.
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Apple doesn't support upgrading to any but the current release, which is 4.3.1 (an which, incidentally, appears to fix some of the bugs in earlier versions).
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If you Google "downgrade iOS" you'll find plenty of help

ITunes "-54" error alert while syncing iphone

Hi,
I have recently upgraded my Itunes with latest version. when i try to sync my phone with ITunes it is showing error "-54" and cant transfer photos or music.Please help me to resolve the issue.

Hello iPete,
Although this article refers to iPod Touches and iPhones, it still applies to your iPod Classic.
http://support.apple.com/kb/TS2380
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My operating environment: Windows Vista Home Premium 64 Bit; iTunes 9.0.2.25. iPod is Classic 80 GB, setup for a hard rive also. Music sync is fine. iPod plays the music tracks fine.
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Hi,
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Unknown error occured, While I restore my backup of 3GS taken from differenct pc to iphone 5 on other machine, please tell me any resolution

There is a problem i keep on getting this error
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or... put your photos in "My Pictures" in My Documents, and viola, itunes syncs it to the iphone. only one sentence needed =/
maybe im missing your point here, the long paragraph is mindboggling

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http://www.hightechdad.com/2014/09/30/how-to-fix-itunes-error-1723-when-syncing- iphone-or-ipad/

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hi,
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hi,
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Greetings ayokunlefromlos angeles,
Welcome to the Apple Support Communities!
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Top of Form
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Bottom of Form
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Please any one help me on this issue..

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I came across an unknown error(56) while I tried to restore my iphone6 today. Now the iPhone sucked in the restoring mode. I am now begging for help

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All the best,
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Unknown error (-50) while syncing iPhone 3G

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