First up, what was the model of your phone?
I'm going to assume it's the i9505 if you had been advised to use the djembey stock Rom.
The one you want to flash via Odin is the pre rooted option, which it appears you have done. If this hasn't worked, you may have to download super user from the play store, or you could try one of the other pre rooted options such as mf8 or the newer mgg(I think? Lol)
If you previously had a recovery installed,I believe(it has done for me) that is wiped by the stock recovery so you would need to reflash whatever custom recovery you had :-) if anything else happens, please come back asap and we will try to help, don't go too flash happy :-)