iphone wont connect to computer

[kipper71]

I bought my iphone today and plugged it into my computer, it said the itunes i had needed to be up graded. Whilst doing that someone unplugged my iphone from the usb port, now when i try to plug it in the iphone doesnt register with my computer, any ideas

 

[-aggie-]

Restore it in DFU mode. See my sig.

 

[kipper71]

Can You Explain As Im New To All This. Thanks