Well I got safe strap. But while I was flashing the rom, the process stopped on a screen with a black background and whit text and I fell asleep waiting for it to finish... I woke up the next morning and my galaxy s4 has SCREEN BURN.... there's lines and text all over the screen no matter what I do with it.. So now I'm going to return it to best buy and get another one. This Sucks haha. But now i NEED to unroot it by tomorrow and i need to know how to do it since I'm still running MK2 and android 4.3... i never finished flashing the rom last night. I just pulled the battery while it was frozen and rebooted It back into stock. I appreciate everyone's help so far.
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Verizon Galaxy S4
Sprint Galaxy S4