[schwang]

Yes you have to sideload ES. No, you don't have to do it manually every time, That is what the path substitution in the advancedsettings.xml does.

Once you set the path subsitution (then exit and restart XBMC) that is what it will always use for the thumbnails.

Here's the steps:

Root the AFTV using towelroot. http://www.firetvnews.com/how-to-root-th...n-fire-tv/
Sideload stickmount and ES File Explorer.
Attach your USB drive to the AFTV
Lauch stickmount and grant it SU permission
Open ES File Explorer (make sure you have show hidden files selected) and navigate to /sdcard/Android/data/org.xbmc.xbmc/files/.xbmc/userdata/
Select Thumbnails, press and hold the "Select" button until there's a check mark on the folder
Select copy or cut.
Navigate to /sdcard/usbStorage/sda1/ then Paste.

Now either edit or create a "advancedsettings.xml" file and paste in:

Code:

<advancedsettings>
   <pathsubstitution>
      <substitute>
         <from>/storage/emulated/0/Android/data/org.xbmc.xbmc/files/.xbmc/userdata/Thumbnails/</from>
         <to>/storage/emulated/0/usbstorage/sda1/Thumnails/</to>
      </substitute>
   </pathsubstitution>
</advancedsettings>

Alternately you should also be able to use for the <from>

Code:

<from>special://Thumbnails/</from>

Then copy the "advancedsettings.xml" to /sdcard/Android/data/org.xbmc.xbmc/files/userdata/

Sorry but you lost me when you got to creating the xml file. Where do I create andor type in this info? In es file explorer? I've done a few things in android but nothing this involved. Sorry for so many questions.