I have the mk2 version of the galaxy s4. I had a rom installed using safe strap. I am planning on selling the phone to someone so i wanted to put it back to stock before I give it to them. When i loaded the default partition and ran the stock rom when I tried to do the newest update it kept failing. So I unrooted my phone and went into safestrap and deleted the 2nd partition I would not be using. I also did a factory reset and wiped everything else. Now when I tried to reboot the phone it is stock on the screen that says Samsung and says samsung with a lock. It will not go past there. PLEASE HElp!!