I did that too, 10.3 is a huge improvement over 10.2.1 or 10.2. I don't know what the chances of 10.3 being jailbroken because Apple changed the file format system.Went to 10.3 beta since my 7+ isn't supported anyway and have to say I'm happier with this phone than I have been with iPhone for a long time. Wouldn't give up this experience even if I could jailbreak. Back to hoping for a current jailbreak!