It would be great if the user manual upgraded at the same time as the firmware. And that you could downloaded directly in the device.
The spanish user manual is still at 1.9. https://www.boox.com/es/downloads-2/
In the last users manuals it has dissapeared the function of the max2 as second monitor.
I think it’s a useful function althoug when it appeared it wasn’t very well explained how to use it.