This thread was a long time ago, but since then we’ve added many improvements and features in our ReachView 3 app. I believe that some of them can be of help
It supports base and rover Reach RS2 configuration, allows connecting not only Wi-Fi but via Bluetooth (more details are here), and support plenty coordinate systems and data formats (CSV, DXF, Shapefile).
Check it here, and don’t hesitate to create a new topic if any questions come up!
UPD: reworked wording