Odin3 says phone is successfully rooted but I have no root access I'm attempting to Root my Galaxy S3 to try and breath new life in to it (I don't want to upgrade if I don't have to).

I've followed the steps detailed in this post and the results seemed to suggest that everything had worked, as you can see in the screen shot, however when I check using the Root Checker app it states -


  Root Access - no access


Maybe I'm missing something, but I can't find anything that I can understand, so I'd be grateful if someone can help me fix this problem.





Update

Below are two screen shots taken after the above root process. On the left is the aforementioned Root Checker app, showing no access. And on the right is a warning shown when I open the SuperSU app.

I have indeed just updated to 4.3, so I'm guessing I'd need to go down the manually re-root app, but I have no idea what the relevant forum would be.
looks like this pda file is only flashing recovery and cache image. So you should have a custom recovery now(probably CWM recovery).

If this is the case download supersu from here: http://download.chainfire.eu/396/SuperSU/ and push it onto your device.

After this boot into recovery(probably vol up + home + power) and install this supersu update zip.

Reboot system and see if you have luck :)