ColourSpace support of TCL non European models

The documentation says that only the listed (European) models are supported but the last message from Steve to that effect dates back to 2024. There is also a note that future firmware updates will enable better support. What is the current situation? Has anybody succeeded in calibrating TCL North American models using ColourSpace?
Why does ColourSpace still require 3DLUT download via USB while Calman seems to have solved the problem? I have read the note that says that such calibrations may not be accurate. A direct connection to the display would possibly make ColourSpace compatible with more models.

I am aware that there are problems with EOTF tracking in HDR on TCL models but ColourSpace should provide very accurate calibrations in SDR.

Thanks.

They are all questions for TCL.
Any 'TCL & ColourSpace' limitations are down to TCL, not ColourSpace.
Please complain to TCL regarding any such limitations.

Steve