I have had my S4 for awhile now and need some help. When I first received it, I did some reading, rooted, did something that removed a triangle or a padlock, can't remember which one and made sure the AT&T software update was unable to run. At the time, custom recovery wasn't possible so I stopped there. So here I am now, rooted with MDL and I have no idea where to go from here to get the latest 4.3, although apparently I have the holy grail of firmware.
I've read as much as I possibly can, subscribed to the forums, GOOGLED, SEARCHED, RTFM and waited for someone else to come along and ask the very same question. Some did but those threads never really gave me the info I need to SAFELY flash my phone up to 4.3. So what do I do? All I need is some guidance, I follow directions well. Teach me! Please and Thank You