I'm currently running 4.2.6 in my Verizon iPhone. I want to update it to 4.2.8. I was wondering if the jailbreak app works on this iOS or not. Can anyone clarify?
Yes you can easily jailbreak iOS 4.2.8, however; since you are actually on 4.2.6 you will not be able to upgrade to 4.2.8 but to 4.2.9 which is the latest iOS at present. That latest iOS is also jailbreakable but a tether jailbreak compare to the iOS 4.2.8 which offer an untether jailbreak.