You have a code I suppose *#*"7378423#*#* check number from internet if it is right. Go to software information. You will read in one of the line HK . If you change to sea variant it will show sea, global C2 rom
New flasher you download from XDA forum and xperifirware as well from forum.
Don't delet any file from firmware . Just flash it. Some time cmd coomand need to be opene and need to set newflasher active a , wh