Hello,
I wanted to update my BJ control elements to version 1.2 as well but can not find anything on the needed USB stick. Can this just be any Zigbee USB Stick or must it be one from BJ? Does someone have a product ID? Where did you buy it?
For the mention problem: control element that stop working.
I have one (out of four) such control element that hangs from time to time, it works fine for weeks or even months and then it stop working, after reseating it in the wall switch it works again. Lately I moved my Wifi AP further away (for other reasons), since then it did not crash yet. The other three switches never had a hang so far.
Regards