Ubook X Pro 2023 i5 - Update to Win 11 23H2

I just got a Ubook X Pro 2023 i5, and it came with Windows 11 22H2 installed.

I would like to run it on the latest Windows-Version, but
Windows Update does not show me the Update for Win11 23H2.

I found a similar topic here for the Minibook X (N5100), but the solution provided there, does not work (In order to install KB5027397 I would have to install another KB… and that does not support my device).

It seems like the easiest way, to get 23H2 onto that device would be a unsupported install for unsupported devices?
eg the “setup /product server”-variant - which would result in a system, that would not offer me mayor updates, like the one from 22H2 to 23H2 … uhps … isn’t that the state, my system is in?

So my question is:
Why does a Windows-device, that was introduced in 2023, not support the latest version of Windows 11?

Because sometimes it depends on the version. Or the components inside. Many times we produce same models but with different hardware during the time so that is why different OS. So we do not have an updated version for it.