Default [Q] Galaxy I9500 patched modem available?

Hello, I have a weird problem with my Galaxy S4 I9500. It was working normally then when I flashed the new stock 4.4.2 rom to it I lost connection to network, I see Emergency Calls Only instead of my network operator and I get a message "Not Registered on Network". But when someone calls me they say that the phone rings however it doesn't ring for me and I can't make calls or use 3G internet with it, I tried to flash all the modems available online but none worked for me. I got the same problem before with my previous galaxy S3 I9300 but I was able to solve it using patched kernel and patched modem done by a member here on XDA. I searched everywhere for a patched modem or kernel for galaxy S4 but I couldn't find one. I already had a back-up for my EFS and restored it but still the same problem.
Any help will be really appreciated.
Thanks in advance