amazon fire tv 2 cannot write in nfs network.

alright im sorry if this is dumb but i have been working on this for 5 days straight now and so far i cant get it. I have the amazon fire 2 4k and im trying to use quasar and want the download path to go to nfs i already have it set up and it can make folders and such from the amazon fire tv, but the amazon fire tv refuses to download the movie file to it.

I read that the new lollipop firmware said kodi needs to ask to write which it doesn’t yet and only es file explore is the only app that does do it yet. Iv looked every where and no luck. I also tried a USB but it cant be fat 32 and i tried SMB but same thing as NFS.

Also i cant root it seeing im on the highest frimware, Is there anything i can do to get this write files over to nsf?