How To flash N920P with international firmware version?

I'm trying to flash Sprints N920P with any international unbranded firmware. phone is rooted, TWRP already installed and OEM unlocked.
Tried to flash N920CXXU1AOI3_N920COXE1AOI3_SER with odin but failed.
could you please give me any advise? There should be a solution because its hardware is same for every region or carrier.

best regards,

Zaza