3gs on 4.2.1 won't update to ios 5 error 1645.

I tried turning off then holding home button attaching to computer iTunes recognise in restore mode, doesn't update this time error 36.
I even tried to erase iPhone through setting. It won't erase just reboots to normal.Works fine as is .
Thanks

Yes I have latest iTunes 10.5 & connected to the back of computer. I even tried on 2 different windows computers & also by putting device into dfu mode, same result. Some forum adviced me to erase the iphone through settings & then upgrade , I tried to erase but it won't erase thru iPhone setting erase. Thanks for your reply & help.

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My iPhone won't update to ios 5 :^(

I have an iPhone, i'm not sure what kind, but it won't update to ios 5 it has ios 4.2.1 on it and when i click "check for update" it says "this version of iPhone software (4.2.1) is the current version". I am using a mac with os x Snow Leopard iTunes 10.6

Then it's probably and iPhone 3G, which can't be updated beyond 4.2.1. You can look here to identify it: http://support.apple.com/kb/HT3939.

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Error 1669 after updating to ios 7, Error 1669 after updating to ios 7

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STEP 1: Delete iTunes from your computer. Also make sure you remove the cache(open itunes then press edit wich is located on the tool bar and then click on preferences and then go to advanced and click on reset warrnings and reset cache).
then go to your hard disk and go to program files and delete folder named itunes.
Note: If you have any libraries or locally cached data that you want to keep, temporarily store them somewhere until you get the situation fixed.
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STEP 3: Download iTunes 11.1 from here.
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So, I've been trying to update my 1st Gen to the iOS 3 so I can use apps, and for whatever reason my iTunes not only deleted everything from my iPod, but won't update to the new iOS. So now I have an iPod Touch that doesn't work, and I'm out 5 bucks for the iOS that won't even work because of an 'unknown error.' Has anyone heard of this or know how to fix it... or why it's not working? Anything?
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Message was edited by: Kikuitadaki

I don't know what I did since I did everything I already tried before, but I fixed it. So nevermind. Sorry for the pointless thread.

My iPod touch won't update to IOS 6.1.6 becTause I don't have enough mb but I deleted all my apps and music and more but it still isn't enough help.

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My wife has a new (less than 6 months old) big beautiful iMac (of which I am extremely jealous-but that has no bearing on the conversation at hand) but every time she tries to update her iPad 2 to iOS 5 on iTunes she gets the error code 3259 at the very end of the 40+ minute download. I own a Dell (over 1 1/2 years old) running windows 7 and I updated my iPad 2 to iOS 5 when it was first released with no problems. I checked the message boards and they said that they were most likely experiencing an overload of people trying to download off the servers and that was causing the download issues. So I waited and tried again....and again....and again....and, well you get the idea.
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Luke 42697

Hello jaideniv,
Thank you for using Apple Support Communities!
First I would recommend this article named Can't connect to the iTunes Store found here http://support.apple.com/kb/TS1368. It will get you started with troubleshooting iTunes Store connection issues on the computer and the phone.
If needed there is a more advanced article named iTunes: Advanced iTunes Store troubleshooting found here http://support.apple.com/kb/TS3297 that I would next recommend.
Take care,
Sterling

3gs on 4.2.1 won't update to ios 5 error 1645.

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