Dave (W8AAS) and Arno (PE1RDP) gave some valuable suggestions.... which made me check the procedures again.
... where I found out you actually have to push the READ button twice (!) before the MCP software starts reading from the radio :-)
Solved ! Henk - PA3GUO
.. I am a bit in trouble :-)
For APRS (ISS, PSAT, ..) I have recently put a Kenwood D710 in my car. Worked fine. I used the MCP2 program to program memories & settings.
Until I decided today to update the firmware: from 2.01 --> 2.10. After that I could not use the MCP2 software anymore. Doesn't read any data from the radio any longer, it sticks at 0%.
Re-did the firmware update, same result, still doesn't read. Doesn't write either btw. ('model / market code does not match')
Tried to also update the Panel Firmware (maybe this was a combo ?). Doesn't work either: says cannot find Panel. ..but the panel is connected and works fine !
Cannot find anything on Google reporting the same (apart from G4ILO, but the poor man is SK).
Any clue anyone - there must be plenty of D710's installed for satellite operations. Or else: does someone have a previous version of the firmware, such that I can try if a downgrade would work ?
Thanks Henk Pa3GUO