Default [Q] No sim inserted after flashing kk stock rom

hi there, was using x-note custom rom...but decided to put back to stock kk rom via odin, all passed ok but now i was no signal, tried flashing modem too for that rom?

just want it working and back to normal? can you help? like a donut i didnt i have no EFS

is it my rom?
bad flash?
wrong odin?

what can i do?