iPhone 4 is always jailbreakable

iPhones available in markets till now all are vulnerable and jailbreak-able via Limera1n bootroom exploit. As bootroom level exploit jailbreak your iPhone tethered only so Dev team require some untether packages and exploits to port on it(as I0n1c created for ios 4.3.3).Please stay tuned with us until we supply you news regarding untether jailbreak for Ios 5.0.But know that Ios 5.0 is jailbreakable.