Hi, This method worked for my Samsung Galaxy S8 SM-G950FD (Singapore).
Change the current csc to your country’s csc.
From last 2 days i was trying to flash indian firmware on the singapore s8 via odin. The flash was successful but it could not change the csc to inu/ins and apart from that no volte for jio until i came across a post where this method was posted.
Try your luck Worked for me though 😉
* I take no responsibility if your phone hardware or software gets damaged / corrupt during…