[jjd-uk]

For an Android device then I'd use the internal Kodi File Manager.

First configure the source on left hand side



Set source to be special://xbmc this is a shortcut to install folder (should work on Android although I've never tried it)



Add source on the right hand side, this is the destination. On my example I've used a smb source on my desktop pc so I can edit the file there before copying back. you could copy to USB device if you have no smb or nfs network share.



On left hand side sekect the source you created then navigate to addons/skin.estuary/xml once done, move across to right hand side to select the desired destination folder



With file selected open Context menu (on keyboard this is C) and select Copy



File will appear on right hand side in the destination folder.