When I try to update my Iphone I continue getting an unknown error (4000). What do I do?
I am trying to update my iphone and continue getting an unknown error (4000). This hapens everytime the software finishes downloading. What do I need to do?
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Two alternatives:
Keeping in mind that this workaround can affect keychain and/or Apple Pay (if in use, you might need to re-input data), try these steps to solve error 4000 on your iTunes:
- Disconnect your device from the computer
- Temporarily disable the passcode on your iPhone
- Restart the iPhone
- Restart iTunes
- Reconnect the iPhone to your computer and restart the update procedure.
When finished, re-enable your passcode on your iPhone.
or
Update your iPhone wirelessly (via wifi).
Regards
Giulio