WiiM Ultra Firmware v5.2.723250 Update - Jul 15, 2025

Please review the WiiM Ultra update release notes below. If you encounter any issues, feel free to reach out to us. This firmware update is being rolled out in stages, with devices updating sequentially over the next few days.

5.2.723250 (In Progress)​

Release date:

7 / 15 / 2025

What's New:

1. Smart DNS Enhancement: Improved Smart DNS behavior by checking the legitimacy of the DNS server returned by the router.
2. HDMI ARC Upgrade:
   • Eliminated pop/crackle noises.
   • Added Auto-Sensing for instant TV-audio pickup.
   • Improved the stability of ARC connections.
3. Advanced Parametric EQ: High-Pass & Low-Pass filters now available (App v3.2.6+ required).
4. Deezer: "Play Next / Play Last" options added.
5. Bluetooth: Adjustable latency for perfectly synced audio.

Bug Fixes:

1. Soundtrack Pairing: Fixed an issue preventing successful soundtrack pairing.
2. Gapless Playback: Fixed an issue causing incomplete audio playback.
3. USB Indexing: Corrected the extraction of PNG format covers from MP3 files and fixed a crash issue that caused playback to stop.
4. Qobuz Connect: Fixed an issue where playback would automatically resume after pausing when using USB output.
5. Phono Input: Resolved a no-sound issue when editing input mode via the app.

​

 

[harkpabst]

Now I have 5.2.723250 (and App v3.2.7.250715.39dc13 android)
Were do I find the settings for the new High-Pass & Low-Pass filters?

It's in device settings, EQ, Parametric EQ settings.

Does anyone know if the Advanced Parametric EQ only works when the Wiim Room Correction is used?

No, that wouldn't make any sense. You can apply them manually.

I interrupt high and low pass EQ as being able to EQ the subwoofer and now I'm not sure.

Not sure I understand. Subwoofer high pass and low pass is independent from subwoofer management.

 

[CliffyBC]

Switch off Auto-sensing of HDMI in the Audio Input settings and you should be done.

That's is the new thing here, you can turn auto-sensing on and off. It's not just the CEC handshake.

The first thing I did was turn off the auto sensing for HDMI in the home app.
Did a hard reset of the Ultra and played some music from plex. After around 5 minutes the music goes off and the ultra switches to HDMI.
Did another hard reset, played music from a radio station, same thing, music goes off and ultra switches to HDMI.
When I press the TV remote to on with the ultra in standby, the tv wakes up, switches the ultra to HDMI and plays it's audio thru the ultra as it has always done.
On the Samsung TV, HDMI and CEC are linked and cannot be disabled individually so turning off CEC is not an option.
I guess there is something in this update that is causing this behaviour as it has run perfectly for 9 months. Any further suggestions would be gratefully received before I have to put in a ticket to Wiim.

 

[Wiimer]

What about the case described in comment #40 ?

Don't your TV change to ARC (external speakers) or are ARC always on, as it is on some TVs?

I said this earlier.

Auto-sensing : off
Automatically..... : off
The input never switches to HDMI.

If I turn on the TV while Spotify is playing, the TV will not output audio and Spotify will continue to play. If manually switch the TV's audio output to the built-in speakers, the TV speakers and the WiiM speakers will output audio at the same time.
(But I have not taken the time to test this setting, as I don't use it at all...)

 

[EddNog]

The new low-/high-pass filters, mathematically, appear to be something other than Linkwitz-Riley, Butterworth, or Bessel filters.

-Ed

 

[hgo58]

The first thing I did was turn off the auto sensing for HDMI in the home app.
Did a hard reset of the Ultra and played some music from plex. After around 5 minutes the music goes off and the ultra switches to HDMI.
Did another hard reset, played music from a radio station, same thing, music goes off and ultra switches to HDMI.
When I press the TV remote to on with the ultra in standby, the tv wakes up, switches the ultra to HDMI and plays it's audio thru the ultra as it has always done.
On the Samsung TV, HDMI and CEC are linked and cannot be disabled individually so turning off CEC is not an option.
I guess there is something in this update that is causing this behaviour as it has run perfectly for 9 months. Any further suggestions would be gratefully received before I have to put in a ticket to Wiim.

There is clearly something wrong with this update. See the other comments about HDMI/ARC in this thread.

 

[harkpabst]

The first thing I did was turn off the auto sensing for HDMI in the home app.

Since you didn't mention it I didn't know.

Did a hard reset of the Ultra and played some music from plex.

What do you call a hard reset? Power cycling the unit or factory reset?

After around 5 minutes the music goes off and the ultra switches to HDMI.
Did another hard reset, played music from a radio station, same thing, music goes off and ultra switches to HDMI.
When I press the TV remote to on with the ultra in standby, the tv wakes up, switches the ultra to HDMI and plays it's audio thru the ultra as it has always done.

This is all with the TV switched on, I suppose? I'm trying to recreate this behaviour right now.

There is clearly something wrong with this update. See the other comments about HDMI/ARC in this thread.

If it was just as easy as whenever someone complains about HDMI ARC problems there's something wrong with a firmware update.
Unfortunately, it's not.

 

[Timmynator]

You could have selected "Nicht jetzt".

But this is not the point. As @Burnside pointed out you can enter and leave beta firmwares as you like. Just check the Device Info page. If it doesn't work as expected just send feedback through the WiiM Home app.

Ticket send. The official Firmware was and is shown as available, but fails to install. Factory reset also is not working, it is simply like a reboot and the ultra behaves total erratically.

 

[Wiimer]

The first thing I did was turn off the auto sensing for HDMI in the home app.
Did a hard reset of the Ultra and played some music from plex. After around 5 minutes the music goes off and the ultra switches to HDMI.
Did another hard reset, played music from a radio station, same thing, music goes off and ultra switches to HDMI.
When I press the TV remote to on with the ultra in standby, the tv wakes up, switches the ultra to HDMI and plays it's audio thru the ultra as it has always done.
On the Samsung TV, HDMI and CEC are linked and cannot be disabled individually so turning off CEC is not an option.
I guess there is something in this update that is causing this behaviour as it has run perfectly for 9 months. Any further suggestions would be gratefully received before I have to put in a ticket to Wiim.

Are the 2 toggles both off?
Please explain how you want them to work..

 

[harkpabst]

Did another hard reset, played music from a radio station, same thing, music goes off and ultra switches to HDMI.

I just managed to do exactly that for 15 minutes while the TV continued to run it's program via satellite. And that's with both settings mentioned by @Wiimer enabled.

The trouble with HDMI CEC/ARC is that it all depends on the TV maker's implementation. The standard itself is crappy. What works with one TV doesn't with the next one.

 

[CliffyBC]

Since you didn't mention it I didn't know.


What do you call a hard reset? Power cycling the unit or factory reset?


This is all with the TV switched on, I suppose? I'm trying to recreate this behaviour right now.


If it was just as easy as whenever someone complains about HDMI ARC problems there's something wrong with a firmware update.
Unfortunately, it's not.

Thanks for trying to assist me.

I removed the power cord from the rear of the Ultra and left it for a few minutes then plugged it back in. I thought that was a hard reset?

I just press the red button the the remote so it could just be in standby, I have always done this and it's worked perfectly up to this point.

 

[Wiimer]

#As mentioned above, I have observed that the "Automatically output audio to WiiM when TV is on" toggle is sometimes grayed out. I don't know yet if this is a bug or not.


If it does not work correctly, try turning it on and off several times to clear the grayout.

@WiiM Support, @WiiM Team, @RyanWithWiiM,
Any explanation for this phenomenon?

 

[RyanWithWiiM]

#As mentioned above, I have observed that the "Automatically output audio to WiiM when TV is on" toggle is sometimes grayed out. I don't know yet if this is a bug or not.
View attachment 24285

If it does not work correctly, try turning it on and off several times to clear the grayout.

@WiiM Support, @WiiMTeam, @RyanWithWiiM,
Any explanation for this phenomenon?

Thanks for the flag! The team will check it out. Any correlation to if audio is playing from the TV or not?

 

[Timmynator]

Strange things are happening. After another cold boot followed by a factory reset, I was able to install the firmware, and everything is back to normal. Even the PEQs are back and working. Which surprises me, though, after the factory reset.

 

[Wiimer]

Thanks for the flag! The team will check it out. Any correlation to if audio is playing from the TV or not?

On my TV it seemed to work fine grayed out, but I honestly don't know yet. If it is grayed out, it may actually be off. I will test it again tomorrow.
Thank you

 

[hgo58]

If it was just as easy as whenever someone complains about HDMI ARC problems there's something wrong with a firmware update.
Unfortunately, it's not.

In this case it worked (almost) before, now it's just useless. So if not the update, I don't know.

 

[harkpabst]

I removed the power cord from the rear of the Ultra and left it for a few minutes then plugged it back in. I thought that was a hard reset?

No, that's perfect. When I'm asking I'm really just asking what you've been doing. I'm not implying anything, least of all you did anything wrong. The term hard reset is just not well defined. Personally, I'm switching off two of my WiiM's every night and wouldn't call that a "hard reset", obviously.

I just press the red button the the remote so it could just be in standby, I have always done this and it's worked perfectly up to this point.

Pressing the red button is really the same as letting the Ultra go into standby, except from that the display is switched of. A reboot can be initiated e.g through the WiiM Home app any time (and is always performed after a firmware update). Usually, that's all it takes.

Only occasionally it is required to power cycle the unit. While this is not a guaranteed fix for everything, it's certainly a good idea, just as you did it.

 

[harkpabst]

In this case it worked (almost) before, now it's just useless. So if not the update, I don't know.

As I said before, It's working the same for me before and after the update.

 

[Smartplug]

Does anyone know if the Advanced Parametric EQ only works when the Wiim Room Correction is used?

I interrupt high and low pass EQ as being able to EQ the subwoofer and now I'm not sure.

I play on it on both it create a band pass. For custom personal peq might work for them. Now, if this was in section on subwoofer where it has both it would have the flexibility to overlap or put a dip.

 

[hgo58]

As I said before, It's working the same for me before and after the update.

Different use cases, different TVs.

So yes, I think it is working if you always want the TV to play via the WiiM. I only want it when I have the TV (HDMI) input on the WiiM selected. In all other cases it should not interfere with the TV. Unfortunately it does, also with all options off.

 

[harkpabst]

So yes, I think it is working if you always want the TV to play via the WiiM. I only want it when I select TV (HDMI) input on the WiiM. In all other cases it should not interfere with the TV. Unfortunately it does, also with all options off.

Don't get me wrong, I don't question that it still doesn't work the way you want it with your TV. This is obviously the case.

That's just no different from what it was before. It might have improved thins in different configurations, I don't know. At least it didn't break what I still see as the standard use case of HDMI ARC: Permanently replacing the TV's speakers with the audio system's speakers.