A frined of mine has GS4 I337 and never had updated his phone at all since he bought it. He has been experiencing some connection issues and asked me to help him. His phone is on MDL version and looked everywhere and I couldn't find a .tar file to upgrade to MF3 then MK2 then to NB1. He doesn't care about root all what he wants is to upgrade to 4.4.2 version. Any help guys is appropriated. Thank you.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app