My iPhone 6 shows error message 4013 when trying to update or restore

Karencsk wrote:

when tried to update or restore , unable Error message code 4013

If you see error 4013 when you restore your iOS device, read this support article

If you see error 9, 4005, 4013, or 4014 when you restore your iPhone, iPad, or iPod touch - Apple Support

No. They won't.

The last thing listed in the troubleshooting document is "If you continue to see error 9, 4005, 4013, or 4014 when you try to restore your iPhone, iPad, or iPod touch, contact us."

What did Apple tell you when you contacted them?

Then I suggest you do that.