Thank you very much Dr. Frank!
Great you did that perfect job and the thorough investigation and I also hope that this bug will get corrected fast in the next firmware so that no more customers will get caught in that bug-trap.
Due to your description I´m able to do the workaround for displaying the burden voltage in the secondary display now.
But I have to do this workaroud again every time I want to use the burden voltage as secondary display, so the setting is not permanent in my 1.22 unit after the first correct initialization.
So it´s a bit frustration fiddeling back and forth all the time I need this secondary burden voltage measurement (this is a great feature and I really already like it a lot).
Also I hope that the manual will be a bit more comprehensive soon.
The GW121 unit is great, but there are a lot of misunderstandings due to lacking information. I was searching a lot for understanding the use of "LowZ". It would be nice if such issues will be described a bit in depth in the manual, so that other users do not have to dig in forums and webpages for hours.
Also there should be a release date mentioned in the documented firmware version table, this makes things much easier and is a defacto standard for documentation.
I´m one of the guys who do not like the automatic saving of the modes when powering off and on the unit. I like to power on the unit always in default configuration. But for sure I accept that there are people who like this "feature" of saving the last operating mode. So, take best of both worlds and make this "auto - last used mode saving" as an option which is configurable in the setup menu. That should be quite easy...
Anyway, in general I´m quite happy with the GW121 - it´s a "big bang for the bucks" and I know that it was (and still is) a lot of work to get it fully running. So huge thumbs up for Dave and the team behind GW121.
But this work could be rewarded for the developers and contributors much more if all the small bugs and issues will be solved quite quick.