On a 3g iphone started of with 2.0.0 all original etc.

So I thought I would go for a jailbreak with winpwn.

Made a back up of my iphone just incase.

Jailbroke my iphone all good, had a look at what cydia offered, didnt really like it so i thought i would convert back to normal.

Restored iphone with my back up.

But now I have all my original contacts its all set up as it was before i jailbroke. But i still have cydia on my desktop

So what, is my iphone still jailbroken or what

you sure you didnt restore to a pwned ipsw

well i wouldnt worry id keep a legit 3g firmware on your desktop and incase you ever want it back to factory just dfu and restore using that firmware