You can download BMW INPA 5.0.2 (last version, includes NCSExpert and WinKFP) software here: http://down.eobd2.fr/bmw-inpa-502.zip (this set is fully tested by me).

Unpack INPA and run Programminstallation/setup.exe

1. Choose language:

2. Select "I accept agreement" and click "Next":

3. Next step:

4. Next step:

5. Next step:

6. Next step:

7. Next step:

8. Next step:

9. Next step:

10. Next step:

11. Next step:

12. Next step (select STD:OBD even if you have DCAN cable) :

13. Next step (select COM port that your cable plugged in):

14. Next step:

15. Next step (click "skip" 3 times):

16. Next step:

17. Next step (restart your computer):

Ediabas OBDII Interface with RS232:http://www.eobd2.fr/ediabas-obdii-interface-for-ediabas-inpa-software-connects-to-rs232-1136.html

How to setup BMW INPA Ediabas software