I can't speak to the availability of a 1400 map but I know that Mark has started helping folks with the 2020 MY V85TT again, which shares the same ECU. As mentioned above, there was a thread here a year or so ago stating that support was going to be temporarily discontinued due to the risk of bricking the ECU. I'd contact him and see what he says.
I can tell you this, if you do flash the ECU follow Mark's instructions closely. The 7SM ECU is the most finicky ECU I've flashed, and I've flashed a lot of them.