you can if you use gevey sim but that thing is very un reliable... and i would recommend to stay away from it and not purchase one..
with out jailbreak there is no way to install ultrasn0w if you are on the right baseband, so that would be your only option if you refuse to jailbreak.. and there is no garante it will work on the next firmware or even properly on this one..
or just buy a factory unlocked device or if possible use it to the network its locked to so you dont have to rely on unlock
exactly... charge you to do something thats free and they will jailbreak it any way as Gaz pointed out.. why dont you want to jailbreak so badly? it does no harm to your iphone
no because once you restore it or "factory restart" as you called it you would lose your unlock as well as the jailbreak and upgrade the baseband to one that cant be unlocked so not only would you lose your unlock and jailbreak but you wont be able to unlock the iphone anytime soon because you would of upgraded the baseband.. i assume your on 01.59 baseband right?
tap settings> general > about and tell me what it says next to modem firmware
my advise to you if you so badly dont want to jailbreak it then just use a t-mobile sim.. and they might even be able to unlock the iphone for you to use any network so you will be officially unlocked and then just use the o2 sim.. i think you can pay them to unlock it or they do it free for customers some of them..
fair enough.. well i mean the carrier itself might unlock it for you .. just buy a t-mobile sim (can be pay as you go) then go say to them please unlock it for me and see what they say
a lot of carriers will make you wait X amount of time before unlocking it and you will need to have an activated sim with them pay as you go or contract..
i know o2 make you wait 24 hours, not sure about t-mobile
will still give t-mobile a ring and tell that i dont have a t-mobile sim but the phone is on t-mobile is it possible i can unlock it to all networks and see what they say ....
if they say i will need sim than will get sim are go from there ....lol