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.

 

[Burnside]

Yes. You can select a profile or turn RoomFit off.

And of course create new profiles, edit and delete them. You can however not associate a profile with the output it was created for. And you cannot copy a profile to the EQ.

Why would you need a different roomfit profile for different outputs unless those outputs fed different rooms? Or do some people have different setups in the one room? If so, I wouldn’t think that was a routine occurrence

 

[Wiimer]

I would also add that the RoomFit could be registered to particular outputs

As you may be aware, when I run RoomFit with Coax out, the profile shows 'Calibrated On: COAX Out' and when run it with Optical, it shows Optical.

This was not visible in the early beta version, so we can expect phase 2 development to be underway already

 

[DariuszP]

Why would you need a different roomfit profile for different outputs unless those outputs fed different rooms? Or do some people have different setups in the one room? If so, I wouldn’t think that was a routine occurrence

Because I play my optical out to Denon AVR and small speakers, while Line Out to Accuphase amp and large speakers. And those two have very different characteristics. I guess that connecting this to various gear is one of the reasons for which WiiM Ultra have different outputs. And easy of use was one of my primary accolades to WiiM - I could just press a single button on the remote and play particular source to particular output with particular EQ. Now it is not possible at all - I need to take my phone and dig deeply into the menus to change RoomFit profile.

 

[Wiimer]

At the risk of being called a fanboy:

Why is it a risk?
I don't mind at all

 

[EddNog]

Why would you need a different roomfit profile for different outputs unless those outputs fed different rooms? Or do some people have different setups in the one room? If so, I wouldn’t think that was a routine occurrence

Headphones versus speaker usage as well.

-Ed

 

[DariuszP]

WiiM introduce a new feature (which is mainly optional as you can more or less use everything as before if you prefer), it's just not available from the touchscreen. How can this be reduced functionality? That's twisted logic!

Well, as quite extensively explained in this tread, unfortunately this is not the case - you cannot use EQ and RF as before. When you set the RF to particular profile it stays and only way of changing it is to dig deep into the menus.

 

[Burnside]

Headphones versus speaker usage as well.

-Ed

Surely for headphone you’d turn off roomfit and use a different peq, not a different roomfit profile as you can’t run roomfit for headphones?

 

[Wiimer]

@harkpabst, @dominikz, @WiiM Team, @WiiM Support,

Currently, I can't disable RoomFit (automatically or by preset) when switching to the headphone output.

As a first aid, I would like to create a PEQ that is inversely correlated to the RoomFit profile and switch to this in the presets to see if this can be flattened.

E.g., suppose you have a RoomFit profile like this.



Create a PEQ with a value opposite to this profile.


Select this PEQ as a preset and use it for the headphone output.

Theoretically this would allow us to return to a flat response (±0), but I'm not sure if it would work properly.

What do you think?

Thank you in advance

 

[Mr Ee]

What do you think?

I think that 'Flat' eq was measured to be different to no eq, and as we still can't choose no eq in a preset then there's buckley's of getting an inverse.

 

[hgo58]

Why would you need a different roomfit profile for different outputs unless those outputs fed different rooms? Or do some people have different setups in the one room? If so, I wouldn’t think that was a routine occurrence

At the moment only the headphones is really an issue for me but I do also use the RCA output for my tape recorder and don't want any RoomFit on that either.

Maybe WiiM did design with individual profiles per output, as they include the information? Let us see with next iteration.

 

[dominikz]

@harkpabst, @dominikz, @WiiM Team, @WiiM Support,

Currently, I can't disable RoomFit (automatically or by preset) when switching to the headphone output.

As a first aid, I would like to create a PEQ that is inversely correlated to the RoomFit profile and switch to this in the presets to see if this can be flattened.

E.g., suppose you have a RoomFit profile like this.
View attachment 25232


Create a PEQ with a value opposite to this profile.
View attachment 25233

Select this PEQ as a preset and use it for the headphone output.

Theoretically this would allow us to return to a flat response (±0), but I'm not sure if it would work properly.

What do you think?

Thank you in advance

I believe this will work, except that I can't guarantee it won't hit the internal limiter with signals close to 0dBFS.
Unfortunately I can measure this to be sure, since none of my devices have separate RC+EQ FW yet.

I think that 'Flat' eq was measured to be different to no eq, and as we still can't choose no eq in a preset then there's buckley's of getting an inverse.

In my tests PEQ was quite predictable. GEQ slightly less so - pehaps that’s what you mean?

 

[Wiimer]

I believe this will work, except that I can't guarantee it won't hit the internal limiter with signals close to 0dBFS.
Unfortunately I can measure this to be sure, since none of my devices have separate RC+EQ FW yet.

Thank you so much.

In the meantime, I will check with my gold-plated ears..

 

[slartibartfast]

@harkpabst, @dominikz, @WiiM Team, @WiiM Support,

Currently, I can't disable RoomFit (automatically or by preset) when switching to the headphone output.

As a first aid, I would like to create a PEQ that is inversely correlated to the RoomFit profile and switch to this in the presets to see if this can be flattened.

E.g., suppose you have a RoomFit profile like this.
View attachment 25232


Create a PEQ with a value opposite to this profile.
View attachment 25233

Select this PEQ as a preset and use it for the headphone output.

Theoretically this would allow us to return to a flat response (±0), but I'm not sure if it would work properly.

What do you think?

Thank you in advance

That's fine but I suppose many users want to apply a particular EQ profile to their headphones. It would be much more sensible if WiiM allowed an automatic way to disable Roomfit.

 

[Skull]

That's fine but I suppose many users want to apply a particular EQ profile to their headphones. It would be much more sensible if WiiM allowed an automatic way to disable Roomfit.

I remember my first graphic eq for my hifi, I would get out of my chair fiddle with a couple of settings sit back down have a listen
Couple of minutes later get up again and change a bit more rinse and repeat several times for a couple of hours
Ahhh exercise was so much fun back in the days of no remote controls

 

[Wiimer]

That's fine but I suppose many users want to apply a particular EQ profile to their headphones. It would be much more sensible if WiiM allowed an automatic way to disable Roomfit.

Sure, so it's a First aid
(Although I guess it would be possible to add the values of the EQ profile for headphones to this PEQ.)

 

[TimTim]

The thing missing in the current implementation is that the RoomFit profile is not associated with a specific output. It should, as each output needs it's own correction.

Good point. It’s safe to assume that headphones will be eqed differently than speakers in a room. It would be nice to return to the eq that has last been used with a specific output when switching outputs.

 

[hgo58]

Is there a way to reevaluate the result after manually editing the RoomFit profile?

I do only see the evaluation option when creating a new profile.

I would like to be able to run the evaluation sweep on the edited profile to see how it behaves.

 

[Wiimer]

Is there a way to reevaluate the result after manually editing the RoomFit profile?

I do only see the evaluation option when creating a new profile.

I would like to be able to run the evaluation sweep on the edited profile to see how it behaves.

That feature was in the last version of the beta, but disappeared in the production version, I don't know if the app needs to be updated or if it is being in development..

 

[hgo58]

That feature was in the last version of the beta, but disappeared in the production version, I don't know if the app needs to be updated or if it is being in development..

Thanks. Yes I think I saw it once, so was a little unsure why I couldn't find it now.

So one more iteration of RoomFit is needed.

 

[DariuszP]

As you may be aware, when I run RoomFit with Coax out, the profile shows 'Calibrated On: COAX Out' and when run it with Optical, it shows Optical.

This was not visible in the early beta version, so we can expect phase 2 development to be underway already

I finally decided to submit my own "ticket" with the description of the problem and the following proposed solution:

"WHAT SHOULD BE CHANGED:
1) Adding switches for RoomFit in particular Output sections - selection from existing RoomFit profiles, including OFF. Of course, this switch should also have the option of not changing anything (i.e. "Current").

This request would also apply to WiiM Amp Ultra, where you could have different outputs as well (e.g. speakers vs. USB DAC)."

I hope this will help