Had been running beta 9 fireCore on an ATV2, iOS 4.3 untethered just fine. Using “aTV Flash (black).app” (Mac of course) I selected my ATV but get:
Installation failed. Oops, it looks like your AppleTV has not yet been jailbroken.
Um, yes it most definitely has. What’s next?
Hi !
Disable seven firewall on your private network and re-launch 1.0 setup.
It’s working for me 
I’m not sure what ‘seven firewall’ is on Mac OS. I’ve tried running the updater on 10.6.8 and on 10.7.2 - both end with the same error. I’m running this on a private LAN with no firewall between the macs and the ATV2.
Could you send in your FC_Installer log file? This can be found in your Documents folder.
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