how is it possible to update kodi do the tatest version?
Would require compiling Kodi 17 for the device you want to use.
http://kodi.wiki/view/HOW-TO:Install_Kodi_on_Raspberry_Pi
Raspbian - Up-to-date versions (only up to version 15.2) of Kodi are now on the default Raspbian repositories.
Version 16.1 is at the moment only available in Raspbian testing
If you specifically want Kodi 17, it might be worth checking dedicated Kodi images for the versions they offer, such as OSMC and OpenELEC.
I want to write update kodi in dietpi 
Hello,
Any news about Kodi 17 ? The final version is available 