Total noob here, but I've been reading. I had been trying to root my phone for a few days, nothing worked on my smn900a. Today I rooted it with Klingo. It worked fine and was totally easy. It booted up fine, no probs had the little unlocked logo with the word "custom" under it each time. Then I tried to do the KitKat upgrade with these intructions (https://www.youtube.com/watch?v=8HDHt4xSnQY) It didn't make it through ok. Now it won't boot past the initial Samsung logo.
I have tried downloading the original .tar file from samsung mobile and using odin (both 307 and 309) I get a fail message each time. I have tried opening Odin as Admin because one of the forums said that might work..nope. I have exhausted all attempts before posting here. I start a new job tomorrow and I need my phone. A little help?