iPhone won't connect to iTunes

hey,
iphone stuck on recovery mode. every time try restart it, goes far apple logo, shuts off. when try connect itunes, loops apple logo on , on again.

also, it's iphone 4s

repost, sorry, previous thread had quite generic title

edit: okay, got dfu mode, when click restore, error 1602 pops up. need help! also, didn't jailbreak iphone

 

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