I have a Samsung Galaxy Grand Neo GT-I9060 version. I want to upgrade my firmware but it fails. I can’t update with the system update in the phone and I already tried to update with Kies but that doesn’t work. I think I reset my phone to factory once and it is being rooted with Root Master even factory setting is reset. When I update with my system update in my phone, it said “Your device has been modified. Software updates are not available”. So pls answer me what should I do?