I know it's been brought up numerous times everyday, but I don't want to spend the money on a SIM to not have it work if/when I upgrade the firmware. I have heard it said that some of the cards will stop working if you upgrade to 1.1.3. I have 1.1.2 on my iPhone right with the phone jailbroken. Anyway, this guy at work told me to get a NextSIM because it doesn't require further programming to make it work. I've also heard from people that it's one of the cards that will stop working if you upgrade. People have mentioned the StealthSIM, but at $100 I'm still a little weary of buying it. Any suggestions would be much appreciated.