I've been using my rooted S3 for the past year without much problem. The other night though I tried installing a new ROM, and got stuck in a boot loop so flashed a 4.3 stock ROM. I used XXUGNA5 and flashed it no bother. Now though, whenever I try and root it, it says PASS in Odin, but root checker states that it's not rooted. It's driving me crackers. My phone really doesn't seem to like 4.3 and I'd like to go back to something more stable. Any ideas?

