It looks like the HU Ombak has is a Mekede Tech model - probably a DUDU 6 or 7. Mekede also own a software development company so are usually ahead of the game for updates etc. This is the brand I've been looking at as they advertise it covers the original HU functions, so ordered the 10.36 inch model from their UK Amazon store (for less that it cost to buy from AliExpress....) they contacted me and offered a better 11" unit C/W with fascia and real buttons/knobs, but it turned out to be nearly twice the price (@£1079), so will re-order the one for £569 (which is the same size as Ombak's), and order the correct fascia from AliExpress (circa £24). Note: (only) if you have the 18 speaker sound system you will also need a combined Fibre and CANBUS adapter which range from £90 to £120 from AliExpress.
The DUDU7 models have a USB C port on the back which can feed an external display/touch panel - plan is to feed the roof monitor via this: will see how that goes.