How to install mtpfs?
You can install mtpfs in Kodi using the SuperRepo repository, the repository of the developer or by installing a single zip-file.
The easiest way is to install SuperRepo repositories, which contains over 2.200 Kodi addons for free.
About SuperRepo and mtpfs
SuperRepo does not maintain mtpfs. We only provide an automated index for Kodi users to have easy access to mtpfs and other addons for Kodi. We are not affiliated with the developers (Stefan Saraev (seo at irc.freenode.net)) and do not provide help for this particular addon.