Default [Q] +rep Help With Sprint Galaxy S3 SPH-L710 Tried to Root!?

Hey Guys,
I have read a burch of different threads about my problem and nothing has seemed to help or it was too advanced for me to understand. So here it is:
I tried to root my S3 and at first Oden 307 said the root failed, then i was able to try a different file and it said pass. but now when it boots up it gets stuck on the samsung galaxy s3 screen. I can still get into download mode and recovery mode. I have already tried the factory reset in recovery mode. Please help I have only had this phone a month. At this point I dont even care rooted or not I just want my phone back lol

Thanks for any help
+rep