Gotta hit ALT-L (maybe several times) after reboot to access recovery. May take several attempts. From there, do Factory Reset. If no joy - then may try loading fresh stock zip. ALT+L at the "Logitech Revue with Google TV" screen following the reboot? I ask because if its a later screen I...

Following your progess. I envy your desoldering toys and debugging tools. Lacking those tools, can't help (yet). I thought cefdk files were encrypted. Did you find they were still encrypted in NAND?

I tried a different TV and get exactly the same result, namely the "Logitech Revue with Google TV" screen is displayed perfectly within a couple of seconds and then it just sits there and nothing else happens. If I put my ear to the box I can hear the fan working and attaching a network c...