Are you planning to install a new software update on your S4 SGH-I337M? Androidbiits.com is going to share a happy news with all S4 SGH-I337M owners. Android 4.4.2 KitKat UMUFNJ1 I337MUMUFNJ1 has been released for Samsung Galaxy S4 SGH-I337M. Well, the big question is how to install I337MUMUFNJ1? Dear reader, I am ready to guide you in updating your S4 SGH-I337M to Android 4.4.2 UMUFNJ1. Previously, I have written the tutorial for updating Samsung Galaxy S4 GT-I9505 to Android 4.4.2 I9505XXUGNJ3. Now I am going to talk about the tutorial for updating Samsung Galaxy S4 SGH-I337M to Android 4.4.2 UMUFNJ1 I337MUMUFNJ1. If you are a proud owner of SGH-I337M, then you can install I337MUMUFNJ1. Continue reading →