Ok so i rooted my GT-i9300T and installed a jellybean rom had that for a few days then i wanted to go back stock, i followed instructions with triangle and unrooting but i messed up and installed a international version rom so now instead of the model being GT-i9300T it reads GT-I9300 and it wont let me register my device for software upgrades and messaging wont work. it says "Unfortunately messaging has stopped". i found the right rom i need to install but now when i try to connect it to my Mac via AFT it wont recognize it no matter what i do. I've messed up and don't know where to turn??? someone please help me i'm sorta worried i've effed my brand new phone