what does error code 400 mean and what do i do to correct the error

Hey Beer4me,

Thank you for using Apple Support Communities!

We see from your post that you're having an issue with an error on your iPhone. We can help.

See if these steps help you:

If you see an error when you update or restore your iPhone, iPad, or iPod - Apple Support

Cheers!

I’ve never heard of error 400. Are you sure it isn’t error 4000? See→If you see Error 4000 updating your iPhon… - Apple Community