Any legit sites for factory unlocking iphones?

I'm not looking to jailbreak i already know how to do that i'm looking for a legit site that factory unlocks iPhone 4 so i can update without worrying about updating

You can unlock your iPhone safer and easier through remote unlocking method. I unlocked my iPhone through this method only. This method of unlocking was very much affordable. I got the remote unlocking for my iPhone from http://www.superunlockcodes.com/ this site is a trustworthy source to rely on accurate unlocking solutions at affordable cost. The unlocking process is very simple/ You will be provided strep by step unlocking guide to assist you in unlocking.

Check out iPhonezone.us. Had mine done by them and and they did it in like 3 hours. Pretty cheap too.

If its AT&T, I can do it within 24 hours on work days(Mon-Fri), for other carriers you would need to send me a message, so I can check the availability.