Recently I have been trying to no avail to flash a rooted version of Kit Kat on my S4. I finally was able to get back to MK2 but I ended up not having any sound and my phone would not work. I took the update from AT&T and that upgraded me to 4.4.2 and got my sound back.
What do you think caused me to lose my sound and phone use? Did I flash an incorrect file?