Dolby Vision for Minix U22X-J (Max) and Ugoos AM6+

Thanks. For getting back to me. Might buy another one just in case the one I have goes faulty.

Absolutely, I made this mistake earlier, so screw these antennas ! (pun intendend) and your remote will perfectly work

Also, if your receiver is an Android TV, make sure that no bluetooth audio stuff (speaker or headphone) is paired (yes, even only paired) → on my projector this mistake induced lags on several things : TV remote lagging and foremost: audio sync lagging (randomly), so please verify this and you can even do a full androidTV factory reset to make sure.

Does anyone else have a white banding issue with saving private ryan @ 2h35m?

using 6/13 nightly


I’m running CoreElect 21-Omega Nightly (Amlogic-ng Generic) 20240613, and then it updated to 20240616. The device is Ugoos AM6B+. The system runs on a micro SD card.

The major issue is at opening a media (usually BDMV folder, or Blu-Ray ISO, usually with custom subtitles included), it randomly crashes. Not very often, but not hard to reproduce. Last night the system crashed for three times in a row.

After crash, HDMI signal is off, TV displays “no signal” screen. Then if I press the red power button on the remote, the TV screen receives a black screen signal for a while, and then it goes to “no signal” again. In this state, the device power LED is also off. Pressing the red power button on remote again, the system will do a cold boot.

The logs:



kodi-logs-20240614.tar.gz (51.9 KB)

I found more log files at: /storage/.kodi/temp, hope they can help.

Hello everyone. New to the forum. I just finished setting up CoreELEC on the AM6b+ last night. Watched an mkv 4k Dolby Vision movie and everything was fine so far. Did an AB testing versus the Sony X700 bluray player (my previous media device) and the picture quality seemed similar. I’m ready to sell the X700 if the Ugoos proves to be a better device. A few questions:

-How do I get the movie poster/description to show up? Most of my movies are currently in bluray folder format and I plan to convert them all to mkv.

-How do I play the movie in bluray folder format instead of mkv? If I click on the folder then it will just go to the subfolders.

-I’m using CoreELEC 21.0 (the most recent stable build). Should I update to the latest nightly as recommended in the guide or should I stick with 21.0 to avoid bugs?

-The remote that comes with the Ugoos is pretty bare-bones. Luckily the tv remote works so I’m using that. However, there’s no STOP button, only Play/Pause. Any workaround?

-I see this in the recommended setting post:


** Buffer mode - cache settings to all methods: smb, local, remote, etc (default ignores local playback)*
** Read factor - Set 'Adaptive’ readfactor (default is 4x). This is a multiplier for the bandwidth allocation based on video bitrate. Eg if video bitrate is 50Mbps and multiplier is set to 4x, then Kodi allocates 200Mbps of bandwidth to fill the cache faster. Adaptive is recommended*
** Memory size - Set 64mb cache size (default is only 20mb). If unchanged from 20Mb, I found it gives the ‘low-speed connection’ warning when playing high-bitrate 4K. Set a bit higher to prevent warning. Potentially this could be as high as 25% of RAM, but generally doesn’t need to even on high-bitrate 4K*

Is this necessary to follow if I play my films on an external hdd connected to the Ugoos?

Hi, I can give you some advice thanks to my experience gained so far.

To use the BDMV and/or ISO folder, in the Coreelec installation instructions post on Ugoos, there is a FAQ section where it is explained that you have to install a Java add-on (very easy procedure) and in the Player–>Discs menu → Show blu ray menu. However, I noticed that it doesn’t always work as it should so instead of “Show bluray menu” I set “Show simplified menu”. It’s up to you to try. Go to the BDMV (or ISO) folder and hold down the “enter” button to show the context menu and click on the “Play” item

For the remote control: search for “keymap Editor” addon which allows you to pair a command to a remote control button. Very helpful.

For posters: I have an Emby server installed on my PC and I let it do all the work of identifying the films. Then from Kodi I use one of the Emby addons to interface with the server. You can also do this using Plex.

For other questions I would let someone more experienced answer.


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thanks for the help. May I ask what version of CoreELEC you are using? Is it stable or nightly? Any bugs?
I’m using the 21.0 stable build (flashed on a usb plugged in the Ugoos) and trying to update to the latest nightly build, but can’t figure out how to. Do I need to reformat the usb with the nightly build and go through all the installation steps again?

I recommend to check our Wiki
Settings should be kept, but it’s always recommended to have a Backup, esp. with Nightly

I went to that CoreELEC Configuration update section, but there are no nightly builds under Available Versions, only stable builds.

To switch from stable to nightly channel, you need to do the described manual update once.
Same procedure to switch back from nightly to stable.

Yes I was doing manual update. I followed the steps:

-navigate to the Updates section of the CoreELEC Configuration Addon
-select Update Channel (CoreELEC major version)
-select Available Versions

Under Available Versions there are no nightly buiilds, only stable builds.

Download and drop in .update over smb or use ssh to download directly to box.

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more Specifically,

ssh into box:

cd .update

then type


then type


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Thanks. I successfully updated to 21.1 0616 nightly build using the smb method.

Just curious: I can’t downgrade back to the 21.0, right? So in that case the only solution is to reformat the usb, reinstall 21.0 and repeat all the installation steps?

use the same method to upgrade/downgrade to any 21 version

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Huh… then I wonder why it say these in the update page :

Downgrading is unsupported by Team CoreELEC (and Team Kodi).
Any support requests will be ignored.

When downgrading, all kinds of issues arise in the areas of:

Addon compatibility
Hardware compatibility
System stability
System useability

Downgrade by same main versions, you will not have issue…
Downgrade between main, eg. from 21 to 20, not recommended.

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Ugoos AM6B+
CoreElec nightly 20240616, crash log: kodi_crashlog_20240618230644.log

Hi, got my am6b set up. DV works perfectly but any HDR content I got no signal. No idea what’s causing it