Phone [Q] SPH-L720 Mobil Odin Pro to upgrade to 4.3

I recently bought Mobil Odin Pro and flashed stock 4.3 ROM and now my WiFi doesn't work. If I upgrade to 4.4 KK will that fix my problem or is it even possible with Mobil Odin?
I have a Sprint SPH-720
Android Version 4.3
Baseband Version L720VPUAMDC

Thank you in advance