People have mentioned in previous posts that if you enroll the console into the Insider Preview program then update the console to the latest Insider build that the boot animation will be restored (you can then remove the console from the Insider program if you don’t want the console running the...
I’ve had similar issues when upgrading a few HDD’s in some Xbone slim consoles & I had to use a recovery USB to complete the setup process (These methods won’t usually work either thou if your console is enrolled in the xbox insider preview program & running a later dash that hasn’t been...