WiiM Ultra Firmware v5.2.725451 Update - Aug 6, 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.

5.2.725451 (In Progress)​

Release date:

8 / 6 / 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.

 

[bever70]

My audiologist told me I had rubbish ears so all this room correction and EQ combined is a waste of time for me. All I want is my ultra to work with my TV and my Plex server and sound decent enough., which it does. I would like Youtube music and a proper plex endpoint, all the rest I could do without.

Being an audiophile requires top quality hearing which I no longer have. I'm at the time of life when I have the money to buy expensive hifi gear but what would be the point, it might look nicer than the Ultra but I wouldn't be able to hear the difference.
Ain't life a bummer?

Well look at it this way: good for you that you can't hear room modes. One less thing to worry about.
I can and the RC deals with them.

 

[pjorgenunes]

Nothing for me either, too much use of the words "enhanced", I'm happy with this version thanks.

My audiologist told me I had rubbish ears so all this room correction and EQ combined is a waste of time for me. All I want is my ultra to work with my TV and my Plex server and sound decent enough., which it does. I would like Youtube music and a proper plex endpoint, all the rest I could do without.

Being an audiophile requires top quality hearing which I no longer have. I'm at the time of life when I have the money to buy expensive hifi gear but what would be the point, it might look nicer than the Ultra but I wouldn't be able to hear the difference.
Ain't life a bummer?

One don´t need golden years to perceive the difference of at least taming the two or three room modes.
For most rooms (even with some mild treatment) and well placed speakers we get intrusive room modes (and not everybody can place speakers near or in the ideal spot - it is usually physically intrusive).

In my case I have the major room mode at 49Hz, with a +10dB increase (not to mention the sound energy at this and around this frequency that takes more time to disappear).
This leads to masking all sound on the bass and mid-bass region.

Even if auto-correction don't work for you, you can put your room dimensions in several online calculators that calculate this room modes. Find the major one and give a try to manual correction at that frequency and something around -6dB or so and a Q of 2-4.
In WiiM it's absolute easy to enable and disable the EQ while playing the music to see what you like more.

For me RoomFit worked better only correcting 35Hz-300Hz. At full range I did not like the results. The reason may be that I like the sound signature of my B&W 805S speakers.

 

[CliffyBC]

Well look at it this way: good for you that you can't hear room modes. One less thing to worry about.
I can and the RC deals with them.

That's one of the great things about Wiim, they are always trying to improve their gear and add new features long after you have bought them.

 

[Steve Woodhouse]

That's one of the great things about Wiim, they are always trying to improve their gear and add new features long after you have bought them.

The WiiM Mini is a substantially better product now than it was at release.

Will you be able to add the WiiM Sub?

 

[CliffyBC]

One don´t need golden years to perceive the difference of at least taming the two or three room modes.
For most rooms (even with some mild treatment) and well placed speakers we get intrusive room modes (and not everybody can place speakers near or in the ideal spot - it is usually physically intrusive).

In my case I have the major room mode at 49Hz, with a +10dB increase (not to mention the sound energy at this and around this frequency that takes more time to disappear).
This leads to masking all sound on the bass and mid-bass region.

Even if auto-correction don't work for you, you can put your room dimensions in several online calculators that calculate this room modes. Find the major one and give a try to manual correction at that frequency and something around -6dB or so and a Q of 2-4.
In WiiM it's absolute easy to enable and disable the EQ while playing the music to see what you like more.

For me RoomFit worked better only correcting 35Hz-300Hz. At full range I did not like the results. The reason may be that I like the sound signature of my B&W 805S speakers.

When I did a factory reset the other week after a Firmware update screwed my hdmi,
I clicked on Roomfit and the ultra made a noise, showed me a graph and I accepted it.
Is that all I needed to do? Maybe the RoomFit did a good job the first time around?
I have a 7 m square room and the Ultra sounds fine to me. As my hearing is as far removed from "golden ears" as it's possible to get, I don't think tinkering with RC settings will improve things a great deal. But maybe I'm wrong.
But you are right, altering the EQ whilst I'm listening to music is nice and simple and the different EQ's do make a perceiveable difference to me.

 

[CliffyBC]

The WiiM Mini is a substantially better product now than it was at release.

Will you be able to add the WiiM Sub?

The WiiM Mini is a substantially better product now than it was at release.

Will you be able to add the WiiM Sub?

I have a wharfdale SW10 sub, had it a fair while and it does the job. I do like the look of the WiiM Sub though.

 

[Kblade97]

@WiiM Team, @WiiM Support, @RyanWithWiiM,

Ticket No.539209

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When I woke up in the morning, the auto-update had reverted mine back to 5.2.723250
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After the update, I'm experiencing a strange phenomenon that I've never seen before.

When I completed the update and opened the device screen, I saw the old version of the Rocket.
View attachment 25100

I have rebooted the Ultra but the icon has not disappeared.
View attachment 25102

Also, the beta testing screen still shows the 27 June firmware and no 15 July version.
View attachment 25103
Is this a new feature for manual downdates? (It's a bug, right?)

Every time I open WiiM app, the rocket appears, so I get excited for nothing

 

[F1 Fan]

Mine also "updated" this morning to v5.2.723250 instead of v5.2.725451. It was already at v5.2.723250 before I was prompted to upgrade. Join Beta Testing still shows v5.2.721349 for Revert to Previous Version. Rebooting did not help.

Same here ..