Go into Kodi, locate genesis then bring up the menu, settings then scroll down to download in that menu, the location listed is where its stored. If nothings altered, I'm going from vague memory here...
In ES go through the following folders:
SD card/Android/Xbmc.com(something or other)/users/add-on data/then scroll down until you find the genesis folder. May be something like add-on.genesis.(something or other).
Hope this helps getting you in the right direction.
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