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.

 

[Djinn206]

When will we see this Firmware on the Amp Ultra? Can‘t wait to use Room Correction combined with EQ.

 

[CliffyBC]

The "revert" option is a giant step in the right direction.
Well done, @WiiM Team

What does the "revert" option actually revert?

 

[EddNog]

What does the "revert" option actually revert?

Your board.


Practice enough and you can do it backside too


-Ed

 

[hgo58]

What does the "revert" option actually revert?

To previous version.

 

[Machiavelli]

did wiim say if they will stack the versions? if a new version b is bad for you you can go back to a. then the moment for version c comes. will your beloved and working version a still be available? or is the cute a in the meantime replaced by ugly b?

 

[Saponetto]

This topic was discussed a few days ago, if I correctly remember there were some hints to make available a few previous releases for a while.

 

[Wiimer]

did wiim say if they will stack the versions? if a new version b is bad for you you can go back to a. then the moment for version c comes. will your beloved and working version a still be available? or is the cute a in the meantime replaced by ugly b?

At the moment, 'a' remains.

 

[QuarryHunslet]

I don't see anything of interest for me in this update.

 

[bever70]

I don't see anything of interest for me in this update.

What?! No interest in room correction and EQ combined??

 

[CliffyBC]

I don't see anything of interest for me in this update.

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

What?! No interest in room correction and EQ combined??

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?

 

[Wiimer]

When I woke up in the morning, this issue (#39) had been solved.

There was no reply to my ticket, so it is unclear if it healed itself or if the team fixed it.
------------------------------
No, it was a hasty mistake on my part. On closer inspection, the auto-update had reverted mine back to 5.2.723250
------------------------------




Note that the only 'Revert to Previous Version' listed on the Beta Testing Screen is still 5.2.721349 (2025-06-27).

It is not yet known if 5.2.723250 (2025-07-15) will be added after all users have received the latest version, or if it will replace 5.2.721349.

 

[Smartplug]

I don't see anything of interest for me in this update.

Only matters if it’s Dlna. It should be the alternative for airplay for those devices that don’t have it.

 

[QuarryHunslet]

What?! No interest in room correction and EQ combined??

I have absolutely no interest whatsoever in room correction and EQ combined, or even separate for that matter.

 

[QuarryHunslet]

Only matters if it’s Dlna. It should be the alternative for airplay for those devices that don’t have it.

I have more or less completely given up hope of ever receiving a working DLNA Casting facility for any of my WiiM devices.

 

[Smartplug]

I have absolutely no interest whatsoever in room correction and EQ combined, or even separate for that matter.

Do you find rc degrade sound?

 

[QuarryHunslet]

Do you find rc degrade sound?

I’m not a fan of any form of RC or EQ, and didn’t like the sound after trying it on one of my devices.

 

[jkdjedi]

Why this last update disable USB out to DAC !? WTF

 

[KrimsonAudio]

@EddN

What?! No interest in room correction and EQ combined??

I haven't made use of the combination yet, but I love the RC. It made a big difference on my Wiim C10. It fixed the boominess of the bass in my small office.