I also had an issue after recent B777-300ER update. Some B777 livery came up with engine covers on, emergency slides open, pitot tube covers on!!!
I discovered that captain tablet on the left works and you can click on different animations (after several clicks!) The tablet has no function on some livery!
It happens on Xbox S therefore we cant change individual files of the install or update!
This has been release 4 months ago! No fix yet?