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vkychan Author

Level 1

8 points

what is error 4000

when i tried to update the phone, an error 4000 appeared. what is it about?

Posted on Nov 23, 2020 12:07 AM

Top-ranking reply

ProustGiulio

Level 10

209,082 points

Posted on Nov 23, 2020 12:09 AM

Keeping in mind that this workaround can affect keychain and/or Apple Pay (re-input data), try these steps to solve error 4000:

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.

Regards

Giulio

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what is error 4000

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