Chainfire 3D issue, stuck on reboot

I've got the solution! Reinstall your firmware using odin with PC while your phone is at download mode. If you'r samsung user, you can find your phone's firmware at sammobile.com , If others , google for it.
 
what if i wasnt able to open the usb debugging mode in my phone before i got stuck in bootloop after installing chainfire 3d.. i also dont have cwm recover mode .. what am i suppose to do to fix my phone? please help sir