My AT&T Samsung Note 2 (SGH-i317) has been downgraded and unlocked and is finally working on my new carrier (Movistar) thanks to your forum article (http://androidforums.com/t-galaxy-note-2-all-things-root/711598-need-hel...).
However it still wants to automatically "upgrade" using the AT&T software.
I´m from Portugal and I´m getting trouble receiving SMS with latin characters. For example, when someone send me the word "organização" it appears "organizaÇ?o".
On Samsung theres an option to change the Input Method to GSM, Unicode, Automatic.