You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

error 4000

unknown error (4000) when trying to update to newest software v ios14. did everything recommended by Apple, no help??? ios 14.0 upgrade error 4000

iPhone 8 Plus, iOS 13

Posted on Sep 20, 2020 8:43 AM

Reply
Question marked as Top-ranking reply

Posted on Sep 20, 2020 3:48 PM

Turn off the passcode and update while device is unlocked https://forums.macrumors.com/threads/trying-to-update-to-ipad-os-14-itunes-giving-error-4000.2255178/

1 reply

error 4000

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.