Xbox one x not updating to 4k

the 4k updates go automaticaly on xbox one x

The original Xbox One cannot produce 4k images. Only the Xbox One S can (sampling) and the Xbox One X (true 4k).

That's right!

And remember: S and X consoles doesn't need firmware updates to play 4K content.

There is an update for the Xbox One X, but it's only around 1GB. The game will then play in 4K, but it does not have any extra 4K textures.

The Xbox One X Game updates for the 4K HDR content are mandatory. A lot of the game that have been release previously before the Xbox One X release will require an update.

Yep. All that 4K goodness can come at a cost in download size. Prior to the One X's launch in 2017, a system update added the option to let first-gen and One S owners download 4K-related updates in advance if they were planning on moving to One X in the
near future. The option doesn't exist on One X consoles because the 4K updates are mandatory there.