I understand your concern and apologize for the inconvenience. I am afraid that the update cannot be uninstalled. With the latest update the TV changed to Jelly Bean. However, as it was announced directly from adobe, Android will no longer support flash player on the latest versions of the OS (Jelly Bean). Hence, all Google TV's updated to jelly bean will no longer have flash support. Adobe has stopped supporting flash on the new versions of android. This is also the reason why media player is no longer available on the TV.
No shit Sherlock. It's not normal. You REMOVED the media player and a bunch of other features! So, Slasdotters, what are my options?"