Error 4000 issues ? How to solve

Hey there Mano23Doray,

We understand you've been unable to update your iPhone using a computer. You see error 4000. We'll be happy to help.

First, make sure your iPhone is unlocked when trying to update.

If it still happens, take a few moments to go through the steps here: If you see an error when you update or restore your iPhone, iPad, or iPod

This will guide you through a few things like updating iTunes and checking the connection.

However, if it still occurs, it would be best to reach out to Apple Support directly. Use this link: Get Support

We hope this helps. Cheers!

Latest iTunes bug. Go to Settings > Display&Brightness and set Auto-lock to Never, then keep device unlocked until the update starts. If won't help, remove the passcode and try again.