Thumbs down lava iris 504q evrything

hi bro. pls help me...lava iris 504 q dev. department

i downloaded everything from this site.

i install cwm recover...and flash samsung galaxy s4 custom rom...
disadvantage...1.flip cover not working.
2. peoximity sensor not working properly during on a call(display blinking)

so i restor my stock rom..but after rebooting system.

it showing "samsung galaxy s4" then showng lava iris 504q

pls how i can remove samsung logo on startup and also my proximity sensor not workin propeely when i making call. my whole display goes blank and blinking.....pls help...