sorry writing in english , but i like to help.
all who want to change csc :
guys according to this thread , i think that will work on exynoss device
SIMPLY DOWNLOAD GOOGLE PHONE APP , DIALL THIS CODE AND ALL CSC APEAR.
*#*#27262826#*#*
I DIDNT TRY AS CANT WIPE DEVICE NOW.
LINK THREAD
https://r.tapatalk.com/shareLink/top...ink_source=app
thanks @
adeltamimy6
he confirmed : WILL WIPE DEVICE