Default [Q] pleeease heelp !!!

[heey guys how are you ,,,, i have galaxy s3 LTE on os 4.3 , i tried to root it by installing CWM recovery but it failed after that my phone always offline and it says that the baseband in un known sooo pleaase heeelp meee:cryin g:
this is my email :
and this is my number if any one could whatsapp me : +249912109055
soo please help me as soon as possible [/FONT]