I have done all the instructions from the manual to jailbreak my Appltv2.
At the last moment the installer told me: The itunes script failed, (to restore the Appltv with the custom build IPSW file)
I tried to do it manually but it failed.
I tried a tethered boot, and it does !
I ran the Appletv black programm but that failed, maybe because the appletv isnt jailbrojken?
I have restored the offical ipsw from apple in Itunes and I'm back where I was.