No, you have only to update your installed version.
Waiting for FTDX 1201 MP....so...which actual rig which appears in the pop-up menu, may I use??
Sorry FTDX 101 MP....finger mistake !!
Look in the Old Forum:
Message Nr. 5 from LA8RTA:
It not optimal, but HRD Interface works if You use Yaesu FT-991, Speed 4800 (if You have not changed it yourselves in the transceiver) and marks RTS in "Flow control/Interface power".
This radio will be added in our comming release!