Destoned , i dont want to disapoint you but ive looked almost everywhere , even in youtube videos yet the only solution available ( at least the only one that people are showing ) for the 1013 error on iphone4 is always the same on each website / video , ive seen a similar error .. 1015 but thats not what youre getting .. Just one thing , you did put it on DFU mode then tried to restore right ? probably you did so .. what i can suggest , is check the itunes version , go check on apple's website ( customer support or whatever it is that they have ) .. If i find something ill make sure to notify you :] until then , Cheers