I have been dealing with Firecore for 10 weeks now and I have not had any results. I successfully jailbroke my Apple TV 2 and I can't even surf the web on it. This is the only reason why I purchased the software. No one at Firecore ever responds. Frankly I would consider this fraud for taking peoples money and not having a working product. Sure its "Beta", but it is pure garbage. Either fix it or give people their money back.
Is there a specific error you are receiving when attempting the install? Which version of the beta are you currently running?
I can open facebook on the apple TV (yay)... so you can browse hte web if you manage to find your way thruogh the install process. I have to say that the install process is none too clear fmor the documentation now that the jaibreak allows untethered boot. The help needs updating for this development.