It's not just a Kodi thing.
It's a Player, similar to other Players like the Perfect Player or Playlist loader Player, basically.
You can Play your rocket or iptv66 m3u playlist file thru that Player.
I have not found a way to load a m3u playlist thru USB yet thou
But I did get the .apk loaded.
This one can also be side loaded on some androids. That cuts out the need for Google Playstore, if you prefer.
I do not recall if the Avov you have can side load but I think it can.
Download the Player .apk from the site. Transfer it to a USB drive.Insert into AVov and find the file and see if it will load.
Code:
https://apkpure.com/progtv-android/com.progdvb.progtva
You will also need the Playlist URL
You would enter that onto the Player, once you get the Player opened.
No sure about USB method yet thou, there is sdCard option, but not USB as I see yet.