I tried to flash 998B on my 998N s21 ultra ..but it's showing secure check fail error PIT . Anybody knows it's solution.

I am 998B one ui 6 0 Feb security patch.Can anyone guide to flash Indian firmware..as I'm unable to use ..multiple features like samsung pay ...dual sim..Jio 5G..on korean firmwareShould I go ahead and flash 998B INU firmware using ODIN