I have to check, maybe next weekend.
For focusing I use single picture with a exposure big enough to see the weak star disks.
For 12bit check if you take raw pictures.
If you see no stars check your focus. Star disks are very weak.
For the temperature, ignore it.
17.5 seems ok, but for exact measurement I have do deassemble the camera.
Have the camera and it works well with indi.
It seems that it the same sensor as by ASI 1600.
For the picture quality I'm to new in Astrophotographie too give a advise and I have no idea if it is a good camera.
But I think with a little bit work it will make good pictures.
Here a example from my second night with the camera M57
You see I need more work.