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Level 1

4 points

What is error code 4000?

While trying to update the software on my iPhone 6 i got the error code 4000. What's the problem?

Windows, Windows 6

Posted on Jul 26, 2020 8:13 AM

Top-ranking reply

Level 10

212,480 points

Posted on Jul 26, 2020 8:21 AM

Error 4000 is a USB connectivity error. It can have several causes:

You are not running Windows 7 or later
You don’t have the correct version of iTunes, which you get from https://apple.com/itunes - the version in the Microsoft Store does not have iOS drivers
Your USB port cannot supply at least 1 amp to the phone
You are plugged in to a USB hub rather than a port directly on the computer (a hub with it’s own power source should be OK, however, as long as it can supply at least 1 amp)
Your firewall or antivirus is blocking the connection to the phone - try rebooting your computer, then temporarily disabling it.

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