Thanks to yawuji and sunsurfer, it's not really Jollas problem, certainly not to the extent of legal action - early adopter of updates comes with some responsibilities for ones own actions, it seems to me.

I will be speaking to Jolla Care, once I've got some spare time to organise my thoughts and write a coherent email. In another thread, I've been playing with an MX4 Ubuntu editions for a couple of weeks, and while I really like it, I prefer Sailfish in the round and I'd like to stick with it.