He's pointing out that if you don't have a wireless connection then you cannot update OTA... since it's a bigger update than the 20MB data limit.thanks for replying I have Internet on my computer and what do you mean about wireless please?
What do you call ISP? (Internet Service Provider?) If yes then it means that you are not having internet on your computer, there is nothing you can do about the iOS update if you do not have internet on your computer. It's about about your firewall but maybe about you getting in touch with your ISP and asking them to know how you can have your internet connection back.my ISP is disconnected will that be a problem?