i upgraded my iphone from 1.0.2 to 1.1.4 using iphone. and i really regret doing this. now i cant use iphone browser and my phone is not at all stable. it restarts, the call dosent end, the ringer dosent ring etc. i want to use iliberty and again jailbrake, unlock and activate to 1.1.4. is it possible. i rely on u guys tremendously, plz help!!!!!
But you can still go back to 1.0.2. You do a manual downgrade from 1.1.4 to 1.1.1 through PC and then make a downgrade to 1.0.2 through installer. Ive done it several times.
i bought my iphone the day it came out. it was firmware 1.0. I upgraded with itunes because I was afraid to use any hacks or anything. I later decided to jailbreak it and used ziphone 2.6b. it worked just fine.