Thanks for the info. Exactly the kind of explanation which is needed, imo.

Some questions rise:

1. There's no possibility the problem of the too intertwined volumes can be solved by a software update?
2. How about the possibility for the end-user to create a back-up of the flash, which he then can use later to restore his otherwise FUBARred device?
3. Isn't it kinda ignorant of qualcomm not to allow distribution of those blobs, since every Jolla owner already has access to them on device?..

Edit: I missed part of the thread. Apparently Q2 is already answered, with a "yes, you can". That's good to know. Would be nice if the process could be automated a bit, and/or have a somewhat more n00b-friendly manual.