My question is: Are these 2 problems (updating crash & tracks cut off in shuffle mode) also present on the Q1? I am thinking about upgrading to Q1 but if it has the same 2 major issues, I will have to pass...
I have both the M0 and Q1 and I believe the music getting cut at the beginning and end is the same on both. The music player functionality seems identical between them. From earlier discussions, changing the 'gapless' setting might affect it but I do not remember if on or off gives the better result.
It is very annoying to get the music cut. 100/500ms does not seem a lot but it really is.
I cannot answer your question about updating the DB as I have given up on it because of the time it takes and the crashes.