FEL Support in CoreELEC

I have both the Dune HD Homatics Box R 4K Plus and Ugoos AM6B+.

If you only want to use CoreELEC to play DV material, the Ugoos is definitely the better choice because it can now play profile 7 with FEL and the Dune cannot. Audio-wise they are the same (in CoreELEC that is).

Advantage of the Dune is that it has Widevine L1 support, allowing it to use the various streaming apps with 4K/DV when running Android. The Ugoos will not do that.

I am running the latest CE 21.0 on an Ugoos AM6B+ and after a few tests, it looks like Dolby Vision is running fine.
But I discovered that the follow Profile 7 (DT DL) DV file is not played back correctly. Only the first stream is visible.

When played correctly, this text should be visible:

Dual Tracks are not supported in CoreELEC due to a kodi limitation.