Iphone 3gs techie folk help pls

Hi all. I have an iphone which I am trying to fix for a friend.Basically it was given to her son as a toy by his dad who said it would work again but he couldnt be arsed doing it as he got a 4 from work. The phone is a 3gs model A1303. I am unsure what OS the iphone was running or if it was jailbroken. Cant do a manual restore in DFU or recovery trhu itunes. I have downloaded the ipsw for OS 3.0 and 3.1 and cant restore directly from the file either. I sort of know what I am doing but not really. Does this mean its jailbroken and there for wont work unless I use redsn0w or something like that!

geek_reliancefix, Sep 19, 10:00 am

try a factory reset

geek_drcspy, Sep 19, 10:04 am

cant do factory reset cos bricked with black screen o death but does go into DFU

geek_reliancefix, Sep 19, 10:22 am

does it come up in itunes !

geek_lancer96, Sep 19, 12:22 pm

Try a latter IPSW, it might be running iOS 4, you can't roll back.

geek_pyro_sniper2002, Sep 19, 12:57 pm