I have an iPhone 4 version 4.0.2. I used "limera1n" to jailbreak it, aslo, I accidentally deleted "limera1n" Am I going to lose my jailbreak previlege? Do I have to downgrade and re-jailbreak it again? I'm new to all this stuff so be patience with me people .
Don't worry about limera1n, if you restore againn, then you will have to rejailbreak. Like those guys mentioned , as long as Cydia is there, you can use Cydia to customize it.
Open up Cydia and install Ultrasn0w to unlock.
the above poster is correct you can unlock 1.59.00 just giving a secong opinion.. if anyone knows their jb and unlock stuff its yeow and annie.. so listen to eitheir one of those people