how to back up kodi before updating to last firmware

vufun

Vu+ Newbie
first of all I'like to know what is the version of kodi in last 3.0.4
the reason is because first of updating to last firmware I made a back up of .kodi folder to not lose all
addons and preferences, but I now I find kodi 16 version.Is that the right?
Now for don't know what reason after some usage kodi starts but begin to show a box adverting that some dependencies are missing ! sigh!
now what is the right procedure to back up kodi, which subfolders in .kodi shall be recoverd after new installation to use last version of kodi included in last firmware
tnx to all
 
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