WiiM Ultra Firmware v5.2.725647 Update - Aug 8, 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.

5.2.725647 (In Progress)​

Release date:

8 / 8 / 2025

What's New:

1. Room Correction & EQ Integration: Room Correction and EQ now work together to provide an optimized listening experience. Learn More
2. Stabilized Wi-Fi Connection: Enhanced connection reliability, especially for mesh network environments.
3. Screen Enhancements:
   • Corrected highlight behavior for Local Radio and Recently Played.
   • Expanded the tap area for easier Preset selection.
   • Ensured full display of Presets and Recently Played content.
4. Amazon Music: Bitrate information is now displayed when streaming Amazon Music Prime.
5. Sub Pro Intergartion: Improved pairing experience and overall functionality when using the Sub Pro.

Bug Fixes:

1. Alarm Fixes:
   • Resolved an issue where weekly alarms occasionally failed to trigger.
   • Fixed a bug where only the default tone played for Pandora alarm.
2. Dolby Audio Fixes:
   • Fixed no-sound issues when playing Dolby audio in multiroom setups.
   • Corrected volume balance behavior for Dolby audio.
3. USB Indexing Fix: Corrected garbled character display for Chinese.
4. USB Output Fixes:
   • Resolved no-sound issues after reconnecting a USB DAC device when using Google Cast, TIDAL Connect, Spotify Connect, or Qobuz Connect.
   • Fixed audio stuttering when playing at 44.1kHz or 48kHz sample rates.
5. Playing Status: Corrected the playback status indicator when no music is playing.
6. Qobuz: Now displays the correct artist name in the app during playback.

 

[Intruder]

Unplugging the Ultra's power adapter at night may avoid auto updates.

They need to let US decide when to update!! Forcing updates is going to bite Wiim ....

 

[Smartplug]

I have 5451 and this is old?

 

[Skull]

I actually have roomfit enabled and it sounds good
Never liked it before but with eq enabled as well it sounds very good before it sounded thin and weak
Good job WiiM team

 

[DariuszP]

It’s possible, via presets, choose which output, Room Fit profile, output volume and more.

That would be great, but it seems that Presets do not allow to determine Room Fit profile, only EQ...

 

[CliffyBC]

I've just read the 6 pages of comments on this new firmware update and I am somewhat confused.
Does it break anything that was working before?
Does it add anything worth having if RoomFit isn't important to me?

Does it update to the version number that Wiim have stated?

Thanks all....

 

[Wiimer]

Does it break anything that was working before?

I don't think so.

 

[Skull]

I've just read the 6 pages of comments on this new firmware update and I am somewhat confused.
Does it break anything that was working before?
Does it add anything worth having if RoomFit isn't important to me?

Does it update to the version number that Wiim have stated?

Thanks all....

Depends what you were using, I don’t use hdmi or external usb dacs
Mine plays music from Qobuz and Qobuz connect
Also it plays music from my attached usb drive so in my case nothing is broken

 

[QuarryHunslet]

Does it update to the version number that Wiim have stated?

Yes, it updates to the new revised firmware number and date mentioned in the opening post.

 

[F1 Fan]

Still on this..

 

[DariuszP]

I've just read the 6 pages of comments on this new firmware update and I am somewhat confused.
Does it break anything that was working before?
Does it add anything worth having if RoomFit isn't important to me?

Does it update to the version number that Wiim have stated?

Thanks all....

3xYES
1) Yes, it breaks the possibility of switching your FULL equlization via presets (e.g. via remote), as RoomFit setting can only be changed deep within the app,
2) Yes, it adds very useful separation between RoomFit and EQ (so you can have a base case RoomFit and than add EQ based on your current mood),
3) Yes, the version and date is reported exactly as per the CURRENT title of this tread .

 

[QuarryHunslet]

Still on this..

View attachment 25180

This version was only released today, so you should receive it within the next few days or so.

 

[Wiimer]

3xYES
1) Yes, it breaks the possibility of switching your FULL equlization via presets (e.g. via remote), as RoomFit setting can only be changed deep within the app,

Yes, but if you save (manually copy) the RoomFit profile as PEQ, the presets should still work as before.

 

[slartibartfast]

Although the separate Roomfit and EQ is welcome I can't imagine ever needing to use it myself. I never used the tone controls on my Audiolab 8000a either.

 

[DariuszP]

Yes, but if you save (manually copy) the RoomFit profile as PEQ, the presets should still work as before.

Unfortunately now you cannot copy this to PEQ (already tried), you would need to do this fully manually (just write it down and then introduce all those data to the PEQ - some 100 values)... Moreover, all the RoomFit data is automatically removed from the PEQ and moved to RoomFit, so even the ones created before are not available for tweaking within PEQ. And most importantly - what is the sense of this? A new function that you have to bypass using some monkey tricks just to get the state it was before the upgrade, while it is ENOUGH to add two switches in the app?

 

[Wiimer]

Unfortunately now you cannot copy this to PEQ (already tried), you would need to do this manually...

Yeah
You have to do it manually, but once and you're done.

 

[slartibartfast]

Unfortunately now you cannot copy this to PEQ (already tried), you would need to do this fully manually (just write it down and then introduce all those data to the PEQ - some 100 values)... Moreover, all the RoomFit data is automatically removed from the PEQ and moved to RoomFit, so even the ones created before are not available for tweaking within PEQ. And most importantly - what is the sense of this? A new function that you have to bypass using some monkey tricks just to get the state it was before the upgrade, while it is ENOUGH to add two switches in the app?

The more I hear about this separate Roomfit and EQ the less I like it. Amp owners didn't even get a chance to try the beta and give feedback so we will just get what we are given, like it or lump it

 

[Wiimer]

Unfortunately now you cannot copy this to PEQ (already tried), you would need to do this fully manually (just write it down and then introduce all those data to the PEQ - some 100 values)...

No need to write it down. You can enter the data manually by looking at the screenshots.

Moreover, all the RoomFit data is automatically removed from the PEQ and moved to RoomFit, so even the ones created before are not available for tweaking within PEQ. And most importantly - what is the sense of this? A new function that you have to bypass using some monkey tricks just to get the state it was before the upgrade, while it is ENOUGH to add two switches in the app?

I'm just talking about what can be done now. Please don't make a complaint against me..

Based on what the Team has replied to my questions in the past, it may be unlikely that RoomFit profiles will be incorporated into the presets at the moment. I suggest sending a request ticket.

 

[DariuszP]

The more I hear about this separate Roomfit and EQ the less I like it. Amp owners didn't even get a chance to try the beta and give feedback so we will just get what we are given, like it or lump it

No, generally the concept is great, there is just a small implementation issue...

 

[Skull]

No, generally the concept is great, there is just a small implementation issue...

I actually like it
I am actually using it when I didn’t in the past
Ran roomfit accept it then added my eq setting and it sounds good to me

 

[DariuszP]

No need to write it down. You can enter the data manually by looking at the screenshots.



I'm just talking about what can be done now. Please don't make a complaint against me..

Based on what the Team has replied to my questions in the past, it may be unlikely that RoomFit profiles will be incorporated into the presets at the moment. I suggest sending a request ticket.

I am very very sorry if it sounded that I am attacking you - not at all, I very much appreciate your help! I am just a bit frustrated as the much welcome feature actually broke my entire routines due to some tiny UI problem. And in fact I cannot imagine any reason for the presets (or - for the record: outputs) do not include switch for RoomFit - it is not hardware limitation as the gear is perfectly capable of having this applied (I just must apply this manually instead of via pressing button on my remote). Btw: is it anyway to revert to previous firmware and stick to this? - because in fact I would opt for this...