Hello Forum, I'm a newbie, Spark is my first drone and i need to review my flight data for me to improve and track my drone flying experince. How can I view my flight data using DJI Assistant 2 ?

You can't view it at all with DJI Assistant, but you can view a lot with your DJI GO 4 App. Just choose "Flight records" and click on the flight you want to review.

Agree with 2#. Please let us know if you have any further questions.

I try to connect my spark with dji assistant2. In the device-list i can select "MM" but after that i can't see the firmware version and all other things. Is this because I already used dji assistant2 with a phantom?

Here a screen shot:

Thomas Schwarb Posted at 2017-9-16 06:22
I try to connect my spark with dji assistant2. In the device-list i can select "MM" but after that i can't see the firmware version and all other things. Is this because I already used dji assistant2 with a phantom?

That's a different topic and there are threads on it in the forum. Might be better to continue the discussion e.g. here: http://forum.dji.com/thread-112720-1-3.html
But as first measure I would recommend to reinstall DJI assistant and see if the problem persists. Recently there have been issues with Mac Computers as well. If you have the opportunity try on a Windows PC. If you are on a Windows 10 PC there is a certain likelyhood that Spark drivers have not been properly installed because they are labelled as coming from an unknown source. You need to override any warnings you might get in this regard when reinstalling DJI Assistant. Thats all I can tell you so far without knowing your specific configuration.