Here's a thread full of firmwares for your device!
I'm sure something will work for you there. And you can ask for any more info in that thread as well. 👍
---------- Post added at 09:29 PM ---------- Previous post was at 09:27 PM ----------
Here's maybe a better one as well...and it has thorough instructions.
Good luck! 👍
Hey, thanks for the quick reply! Unfortunately, neither of the posts contained what I needed, but for for kicks and giggles, I tried reinstalling the 4.3 rom with an older version of Odin (3.07), and wouldn't you know it, worked like a charm. Funny how things work. Thanks for the help; sorry for the troubles!