I too, after much time being happy enough with the Obihai 202, am now ready to toss it in the blender and hit puree. Ever since they have figured out a way to try to extort more money from people.
I am in my late 80's and have to have my son work on it.
It has Build 5264, and we're trying to put in Build 5285, so far it hasn't done the update. And even though there is an update, dialing ***6 says there is no update available.
However, while it is updating I can make an outgoing call, but then it reverts to the same thing, a dial tone, dial a number, and then a dial tone again. Almost like it looks up to see if you've paid the extortion fee, and if not you don't get your call put through. On the ObiTalk Dashboard it shows the phone connected.
Hours and hours have been spent trying to fix something that was fine for months and months.
p.s.: Apparently it absolutely refuses to install that update.