Can you update a not activated iphone to ios 7, that is jailbroken?

Can you update a not activated iphone to ios 7, that is jailbroken?

You should not update a jailbroken device directly. First restore in iTunes and then update.

Not too sure about non activated iphone but have a read here: http://forums.imore.com/jailbreaking-unlocking-hacks-themes-mods/260071-i-have-unactivated-iphone-4s-id-like-jailbreak.html