I phone 3g stuck in recovery loop

[ross montgomery]

hi i bought an iphone 3g for my 12 year old daughter to get started with but its stuck in recovery screen with itunes logo , it wont restore and comes up with error code 1002 i have downloaded and tried all the jailbreaking and unlocking for the last 2 days to no effect i used iphone unlocker pro dot com followed all the instructions and nothing , it gets to the stage where it will say all will now be done on device and i see the device booting all this info on the phone then ( now this is funny ) i see a pineapple with running shoes and a headband with a bite out of it downloading stuff then it gets to almost the end then stops phone goes back to itunes logo ......
any ideas please and i hope this makes sense lol