As many of you know 4.3 just released on the CSPIRE variant device. I have went through currently 2 phones because they messed up after messing around a bit with kies and "other things". It's like it doesn't want to read from the sim card anymore and refuses to program itself. So with that said here is the stock 4.3 Full restore from sammobile.com so you can hopefully either fix yours or take it to the store.
P.S. They cannot fix it
This will change the Samsung Software to : Official
As well as Recovery, etc, to Official
Galaxy S 4 SCH-R970X - 4.3 RESTORE DOWNLOAD
Originally Source with god awfully slow link that took me over 12 hours to download:
Thanks to Garwynn for getting sammobile to push this ASAP.