Tbj5

Have exactly the same issue. Connected to wifi, upgraded firmware twice to get to 5.X, and wifi connection was no longer working. Trying to connect again, and the wifi hotspot it makes is not visible to anything. Really frustrating that I had wifi for all of an hour, and not only is it not working due to a simple firmware install, but finding out that this has been a known problem for almost a year now with no fix or visible feedback.