RBKE963 x 2 (Firmware version of two satellites different)

I've been running an RBKE963 for the last two months and updated the firmware to 6.0.3.85 some time ago.  I bought another RBKE963 set (for the two satellites).  After finally getting them to sync with my existing setup, they would not sync wirelessly so I had to connect each one over ethernet to the router.  Also, the app would never indicate that a satellite was found even though cancelling the process showed the satellite was available but only after a wired connection attempt/sync.  After I got the satellites recognized, the app showed that an update needed to be done so I proceeded and the update came back as successful.  However, the satellites appear to have been updated but to version 6.0.3.88.  How do I get this version so  can update the remaining devices to it or should I downgrade the newly added satellites?  I can only find the .85 version but nothing on the .88 version.