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Fix: iPhone Could Not Be Updated Error 4000 – iTunes

iPhone Could Not Be Updated Error 4000 iTunes

If you are trying to update your iOS device (iPhone or iPad) using iTunes, you may receive an error message after the iOS update downloads and attempts to install to your device.

 

The iPhone “” could not be updated. An unknown error occurred (4000).

 

The error most likely indicates your iPhone is already updated with the version of iOS iTunes downloaded. Verify this on your iPhone and attempt the updated using your iPhone by going to Settings -> General -> Software Update.

 

It is also possible your iOS device locked with a passcode during the beginning of the installation in iTunes and this caused the update to fail.

If you still want to update your iOS using iTunes, ensure you are using the latest version of iTunes from Apple. Reboot your iOS device and attempt the update through iTunes again by plugging your iOS device into your computer.

 


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Comments

sam john on Monday, 25 May 2020 05:24


This error is coming just because of your phone being is disconnected or getting locked, the better solution is check your cable which you used to connect apple phone is working properly or not, if its working then keep your phone connected and make sure your phone is unlocked mode, please note your phone will auto lock after 30 sec or after one min so make sure u keep unlocked your phone bye touching the phone screen in between or u can play a YouTube video to prevent your phone from auto lock.
if this both is not working then try to update your phone using your phone itself. For that you have to clear your phone memory if you don't have enough memory minimum free space is 6GB or more. Hope this will work if not let me know.

This error is coming just because of your phone being is disconnected or getting locked, the better solution is check your cable which you used to connect apple phone is working properly or not, if its working then keep your phone connected and make sure your phone is unlocked mode, please note your phone will auto lock after 30 sec or after one min so make sure u keep unlocked your phone bye touching the phone screen in between or u can play a YouTube video to prevent your phone from auto lock. if this both is not working then try to update your phone using your phone itself. For that you have to clear your phone memory if you don't have enough memory minimum free space is 6GB or more. Hope this will work if not let me know.
Myra on Wednesday, 08 April 2020 17:42

I need ios13, updating via usb on pc. error 4000 continues to come up. how do i fix this

I need ios13, updating via usb on pc. error 4000 continues to come up. how do i fix this
cathy on Monday, 23 September 2019 12:38

i have tried this iphone 6 which i havent used for at least 1,5 years. went to the apple store and they said they cant fix it - left it off for too long. do you think i can sell it like it is as spare parts?

i have tried this iphone 6 which i havent used for at least 1,5 years. went to the apple store and they said they cant fix it - left it off for too long. do you think i can sell it like it is as spare parts?
Noone on Monday, 22 July 2019 16:20

when you spend more time trying to execute an update............ there is something really wrong with that picture.

when you spend more time trying to execute an update............ there is something really wrong with that picture.
m c asthana on Sunday, 06 January 2019 01:11

unable to reset passcode from phone

unable to reset passcode from phone
m c asthana on Sunday, 06 January 2019 01:10

i have iphone 8 plus. unable to update on phone as apple id password not being accepted. same accepted on my pc

i have iphone 8 plus. unable to update on phone as apple id password not being accepted. same accepted on my pc
Hiro on Sunday, 16 December 2018 21:47

How can I update my iPad that passcode still using but no chance to enter the system (that means when I press power button, it's always showing recovery mode) :'( ?

How can I update my iPad that passcode still using but no chance to enter the system (that means when I press power button, it's always showing recovery mode) :'( ?
Rhonda James on Friday, 23 November 2018 01:06

exactly what the problem was. passcode

exactly what the problem was. passcode
joohn on Wednesday, 12 September 2018 10:43

im still getting 4000 error even after i put in the passcode

im still getting 4000 error even after i put in the passcode
James Rivington on Monday, 23 July 2018 12:41

Thank you! Thank you! Thank you! Yes to all the comments above about the software "kiddies". Very polite compared to what I might say.

Thank you! Thank you! Thank you! Yes to all the comments above about the software "kiddies". Very polite compared to what I might say.
Ted Heubach on Tuesday, 05 June 2018 11:51

"It is also possible your iOS device locked with a passcode.." - That was the reason !

"It is also possible your iOS device locked with a passcode.." - That was the reason !
Chin Music on Wednesday, 03 October 2018 18:59

Thank you, thank you, the passcode lock, (Settings: Display and Brightness) was turned on to 5 minutes. When I changed it to "Never" my update went through.

Thank you, thank you, the passcode lock, (Settings: Display and Brightness) was turned on to 5 minutes. When I changed it to "Never" my update went through.
smallz on Thursday, 31 May 2018 08:39

Absolutely! I kept missing it when it asked me for the password because it takes so long to "verify the software". I tried it during daytime (when i'm awake, hah!) and was able to finally catch it to enter my passcode. Low and behold it worked and we are now updating!! Thank you all!

Absolutely! I kept missing it when it asked me for the password because it takes so long to "verify the software". I tried it during daytime (when i'm awake, hah!) and was able to finally catch it to enter my passcode. Low and behold it worked and we are now updating!! Thank you all!
weezely on Tuesday, 08 May 2018 12:03

[gripes start]

Since there are plenty of us complaining - here's my list of gripes.

* Yes - Idiotic that it throws an uknown error 4000 when it should know damn well a passcode stopped it.. (Agree 100% with above commenters).

* Why couldn't Apple have got the silly iPhone / silly iTunes to prompt for passcode right at the START - before I went off to have a shower or do something else.. No it needs its silly little hand held...

* Here's the kicker - Today getting off the train with 10% battery left, iOS decides to prompt me to update to the latest version.. Great idea!@! Let's see how that goes!! NOT.

For big companies MS, Apple and others do a great job of looking like they need to hire some kindergartners to give them some clues on decent software engineering...

[gripes end]

[gripes start] Since there are plenty of us complaining - here's my list of gripes. * Yes - Idiotic that it throws an uknown error 4000 when it should know damn well a passcode stopped it.. (Agree 100% with above commenters). * Why couldn't Apple have got the silly iPhone / silly iTunes to prompt for passcode right at the START - before I went off to have a shower or do something else.. No it needs its silly little hand held... * Here's the kicker - Today getting off the train with 10% battery left, iOS decides to prompt me to update to the latest version.. Great idea!@! Let's see how that goes!! NOT. For big companies MS, Apple and others do a great job of looking like they need to hire some kindergartners to give them some clues on decent software engineering... [gripes end]
MW on Monday, 16 April 2018 11:08

Rebooting my phone seemed to resolve my issue.

Rebooting my phone seemed to resolve my issue.
KayDee on Friday, 09 March 2018 23:44

bloody passcode. How is that an unknown error?

bloody passcode. How is that an unknown error?
meep on Tuesday, 20 February 2018 18:00

Yes!!! It was the passcode! Grrr..

Yes!!! It was the passcode! Grrr..
Recardo Mims on Saturday, 23 December 2017 00:50

Thank You It was because of the passcode!

Thank You It was because of the passcode!
Bob on Wednesday, 20 December 2017 17:18

Error 4000 was being caused by the passcode because I was leaving the phone updating and kept missing the message requesting the passcode be entered on the phone. Stupid Apple. Stupid iPhone. Stupid iTunes. Buy any phone that isn’t from Apple. You know I’m right.

Error 4000 was being caused by the passcode because I was leaving the phone updating and kept missing the message requesting the passcode be entered on the phone. Stupid Apple. Stupid iPhone. Stupid iTunes. Buy any phone that isn’t from Apple. You know I’m right.
yeppyyappy on Sunday, 03 December 2017 08:03

Thank you for your information for my IPhone to work properly. It is so much better then going to Apple because your information is more direct & easy, no unnecessary wording.

Thank you for your information for my IPhone to work properly. It is so much better then going to Apple because your information is more direct & easy, no unnecessary wording.
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