I'm not sure you're on the right track there genixia.

The playlist forgetfulness seems to be solved with v3a8 for me - it never forgets now. Occasionally it does seem to forget it's position in the song and just goes back to 0:00 though. I believe I remember this happening very occasionally back with v2.

I'm 99% certain it's v3 thing and possibly v3a7 or v3a8 to be specific.

Occasionally I have been noticing my tuner disappear too. I don't use it much so I'm not sure how often if happens. If I simply reboot via Hijack (i.e. not removing and reinserting which would suggest faulty contacts) the tuner usually comes back. I'm not sure the two are related, but I'll check from now on.

If it was a time to shutdown thing, why would it happen in the car? Surely when the ACC line goes low, it could still save things in time since it can run of the BATT line indefinitely. It's only after the shutdown delay that the unit itself decides to completely turn off.