Problem with 49nu8000 tv- game mode is disabled in screen mirroring after update firmware to ver.1251

[hasto]

Hi ,like in title, after udate  when conecting laptop wirelessly(screen mirroring) to tv, game mode is disabled. Before in version 1153.3 it worked. Is it any solution to fix this or uninstall upgrade? Is it any option to do it in service menu?

[hasto]

anybody here?