When considering an update like "JTDX 22160 UPD", here are some factors you might want to evaluate:
A: Yes, but not at the same time using the same radio. You can install them in different directories. Do not share the same logbook file between both apps.
If you are upgrading from a very old version, it is often best to back up your logbook (ADIF file) and perform a fresh install to avoid configuration conflicts.
In this version, you typically cannot manually input a DX callsign in SuperFox Hound mode; you must double-click the decoded DX station in the Band Activity window to initiate a call. JTDX 2.2.160 rc7 grid issue