Pardon the really easy question - I haven't been in the rooting game for a while and I decided to try out the 4.4.2 method on my i337 S4. I'm following the guide specified here: http://forum.xda-developers.com/show....php?t=2730144 (3rd post down)
Here are the steps:
1. Place the I337UCUFNC1_100%_Stock_Rooted_ROM in the root of your ext sdcard. [DONE]
*2. Download the I337_Downgrade_to_MK2 file, extract the .tar and flash in PDA slot in Odin(AP in Odin v3.09+) to obtain semi-functioning(no-wifi) MK2. [DONE]
3. Use your favorite root method to root MK2, e.g. Saferoot, Kingo Root App, then install the latest Safestrap-JFLTE-3.72-kk-B01.apk.[DONE]
4. Boot into Safestrap recovery, perform an advanced wipe and wipe everything except ext sdcard.
"4. Boot into Safestrap recovery, perform an advanced wipe and wipe everything except ext sdcard."
That is where I'm stuck - I got the correct SafeStrap download, installed the APK, loaded the APK and tapped "Install Bootloader" but whenever I tap "Reboot to SafeStrap" it just brings me back into the system - no SafeStrap screen or anything.