[Q] how to update htc j one kddi topic

hello everyone........
i am here because i have htc j one kddi version and currently i am running android 4.2.2 over sense 5.0 so my question is can i update my phone to sense 6 or android 4.4...
currently my phone is rooted and have s-off but my bootloader is locked and i am using other carrier sim card ( china unicom ) ....

please let me know can i update and if i can then ho can i ?

other thing is.. i download sense 6 rom from xda but i afraid to flash this rom because i not sure if i flash it with my current sense 5 then i can use other carrier sim card like china unicom in place of kddi.......

please help me if you guys can ..........................


thank you very much :crying: