Given that wait solved the posters problem in the other group AND that the poster who answered with the solution said
I had the same issues....Actually, once the new guide has fully installed (takes quite some time even after a reboot), you can access the menus as before...but the reaction is weird.
One down-rocker gives the first level, pressing another time, causes a blink on the TV screen....and you think the feature is missing or busted...it's not...just don't press again and WAIT...5-20 seconds and the next level will appear! I know, it sounds crazy but...that's the implementation!
It would not surprise me if many people do not simply wait because they think that pressing setting a second time did not work and press settings again.--
Warning, If you post nonsense and use misinformation and are here to argue based on those methods, you will be put on ignore.