[Android Head-Units] Scopesys:
This may help :

I have always had the head Units FM radio as the 1st Quickplayer.

In the past, when all else fails, selecting the FM radio always worked, and thereafter, it would seem to make thing better when selecting the other players.

I purchaed the pro version of Poweramp, but it always seemed to be the player with issues, so I swapped it out with Blackplayer, which seems to select better in FCC. There were some issue with Poweramp not doing things in a "Standard way", and I believe SpeedFire did a work around, as the Poweramp author seemed reluctant to address it.

I think there is still an issue when FCC comes out of sleep, or there is a reboot... everything starts up ok, and typically I have BlackPlayer set, so there is a delay while the USB media does a media check, before it start playing

Then typically, about 2 minutes into playing, it will suddenly switch to another song. Maybe I have some setting in FCC or Backplayer doing this, and this will need further investigation.

I don;lt yet know if this has improved, but typically in earlier version, I had to select back and forth between players, a few time to get them to then switch consistently.

The impression I get is that FCC is doing a lot of setup or re-initing during the1st few minutes of running, during which time , thing do not always work as expected.

This was further suggested by the symptom of the Scrolling text being very JERKY, during those 1st few minute of operation, gradually getting better, until it got quite smooth (not perfect), by which time FCC seemed to have finished whatever it was doing, and had settled down to more reliable operation.

But this latest version seems to be SIGNIFICANTLY better, and the text scrolls smoothly right from the start, which might be a sign of thing getting better.

Now that FCC at least end up working consistently as far as switching songs and players, after it has finished setting up after a re-boot, it make more sense to further investigate what is happening during a re-boot.

Maybe I can start a Video r4ecorder running as soon as possible after re-boot, and capture what is displaying when FCC is switching Players & songs during it "minutes of startup" time.

But from the small amount of testing I have done with this latest version, it seems to be a very significant step forward towards perfect operation :)

BTW: My 3rd Quickplayer is SPOTIFY, and being a Streaming app, requiring Internet, I expect it to have delays when the head Unit reboots.... but once it has started, and has its playlist selected and running, switching between RADIO, MP3 Player (Blackplayer) and Spotify, seem to work immediately, and thing update within a second or two of switching.

I am really excited that it is working so much better in this latest beta. (3.295)

---------- Post added at 12:29 AM ---------- Previous post was at 12:16 AM ----------

If you have the same Eonon unit as me, you might want to take a look at your CPU temperature. I discovered, that after 5-10 minutes, mine is up at over 220F , (according to CPU-Info app), which is NOT GOOD, and it might be throttling down the CPU speed to try to run cooler.

There is no Fan in theses Eonon Units (neither a CPU fan, or a case exhaust fan), so I suspect especially in the summer, they are running really hot (and slow ?)

I lost my AC for a few weeks this summer, and the CAR was getting up to 120F inside, at which time, the head unit was having a great deal of difficulty to keep running... ie GPS was useless and music was stuttering like crazy.

I intend to add at least a 12v fan on the CPU (and maybe one to the case) before next summer.