error code 4000

Error 4000 is a Windows 10 and iTunes error. Until Apple updates iTunes, you will continue to receive the error if you attempt to update or restore your device in iTunes. A workaround for now is to temporarily disable the passcode on your device, update, then put the passcode back on. The con to this is that it will remove all of your credit cards in Apple Wallet. Another option is to go to Settings>General>Software Update and update from there.

Hey Ringbutt,

We've got your back and are here to help. We know important getting the error resolved is. We'll want to follow the steps If you see an error when you update or restore your iPhone, iPad, or iPod. That page will go over best practices and steps to try next

Let us know if this helps.

Cheers.

You're welcome. Hopefully Apple will get this fixed sometime soon.