Thanks Ironass - I am trying to find the firmware online, but not having much luck. I have tried using the sammobile site, but the download of the software fails half way.
Also, Odin3 will not connect to my phone anymore. I've been trying for the last 2 hours and also re-downloaded the usb drivers but still no luck. Could this be because I have the 'no command' error in recovery mode?
I will keep trying but looks like I have a very expensive paperweight at the moment.