Default [Q] Help please.

Hello.I'm new to posting here and hate to even ask but today my phone was flashed for me to Slimkat.I personally didn't like it very much so I asked the person who flashed it to revert it back and he was guiding me through it with odin he had me download the root66 version of T999L_UVUBNC1 and had me run it through with odin.Odin says it was a success but my phone is currently stuck on the tmobile screen as it boots.any insight while i continue to look would be great.