AvoK95 wroteDo NOT flash the firmware that is not designated to your specific model number, you could hard brick the device to a point where the only way to fix it is to do a JTAG.
The factory firmware will have your modem locked and thus you have to use a custom ROM with a hacked modem to have it unlocked and be able to use your SIM.
Otherwise, you have to contact the carrier abroad for them to unlock it for you.
But when I used to turn on the phone it said SM_N920F, and when i tried to flash a firmware the first time it said N920T