Default csc ma4 (xxx) problem with kies

hi everyone i facing some problems with my phone mainly network cause it has a constantly drops and then it raises to the top but also KIES don't let me update because of my firmware, i noticed that in csc says CSC:MA4 (XXX) i think that those tree X hasn't to be there, so my question is if that makes my network problems and KIES and if it has solution, I don't have a efs backup, please help me.Sorry if am not so clear but English isn't my native language. thanks in advance