I have to say .. it turned out that I was mistaken about the patch being the solution (for me, anyways). Although it did allow me to run oupgrade and get everything seemingly up to date .. minutes after I posted my reply, my device started behaving erratically, continuously disconnecting from and reconnecting to Wifi, and was mysteriously re-booting itself about every minute or so. I ended up having to do another factory reset and took another shot at re-configuring my Wifi connection and installing apps through the browser interface (which I succeeded at, .. finally). There was no rhyme or reason to it, to be honest.
I think the main problem is that there's never any clear indication that firmware updates, Onion OS updates, or Apps have been properly downloaded or installed, or if/when rebooting the device is necessary. Now that I've finally got the device up and running, I'm reluctant to ever apply any other firmware or Onion OS updates ever again, because it always results in problems. I encountered the exact same issues with my Omega2+.