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Apple and Google deliver support for unwanted tracking alerts in iOS and Android. Learn more >
Apple and Google deliver support for unwanted tracking alerts in iOS and Android. Learn more >
I am trying to update my phone via iTunes to ios14 and I keep getting this unknown error (4000)
currently on 13.6.1 iphone 11 pro
iPhone 11 Pro
Error 4000 is an undocumented error code (at least publicly undocumented). It means that the connection between the phone and iTunes was interrupted in the middle of a sync or update activity. In the past this might have been caused by a flakey USB port, an antivirus or a firewall. However, there is a new cause of this error that is the result of a bug in iTunes for Windows that requires the phone not be locked during the update. So first check your antivirus and firewall (temporarily disable them), but if that doesn’t fix it there are three workarounds for the bug:
Note that this error should only be a problem for updates; if you are restoring iOS rather than updating it should not occur.
It’s a bug, but it’s an iTunes for Windows bug, not an iOS bug. If you can downgrade iTunes to 12.8 that’s a workaround.
this worked, thanks
Another vote for turning off the passcode. Going from IOS 14.1 to 14.4 on iPhone 12 mini. Worked first time after turning off the passcode. Turned back on after the update to 14.4.
what should do
Larry, did you see my bat call in the Lounge/WC?
Giulio
Thank you.. Disabling the passcode fixed this
iOS14 Error 4000
