You probably don’t want to downgrade the firmware as the Drobo may not recognize the diskpack since the drives would be updated further than the firmware.
Even though the DroboApps share doesn’t show in Dashboard you can still map to it from your OS. On a Mac, you can do that from Finder > Go > Connect to server.
Thank you for the thoughts. Further exploring suggests this is a dashboard issue. Using Finder and connecting in the admin allows me to access the share; the immediate goal is achieved. There is no clear reason the dashboard is not working as it used to though.
As to upgrading the firmware on the drobos… The last few updates had some corrections I wanted. Otherwise, if it is not broken it is left as is.
If the reason or correction for the dashboard ever becomes clear, it will be shared.