I have searched and found many threads, but no solutions for the problem I am encountering. I have a s2 i777 AT&T phone that has never been rooted and is on gingerbread os. I seew here AT&T offers the upgrade to Ice Cream Sandwich. I jhave downloaded the latest version of Kiers and plugged my phone in but I get a message saying: "Your device does not support software upgrading via Kies." I read on threads that you can manually input your serial number and model and do a firmware "reload" when plugging in the phone in boot mode. I tried that also and after it said initializing firmware upgrade it failed. What do I do to correct this????