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.

 

[Skull]

Try B&K with individual channels

Funny thing is that I was about to redo that and flat

 

[mpr]

Funny thing is that I was about to redo that and flat

I've just rerun all three with individual channels (all settings the same) and trying to figure out which I like the best.

Even when things 'break' for the tinkerers, there's always something to play with

 

[Öggy]

How do you handle individual channel measurements when a subwoofer is connected? I can’t find any option for this (WiiM Ultra, latest firmware) and I think I once read that it’s not possible.

 

[slartibartfast]

How do you handle individual channel measurements when a subwoofer is connected? I can’t find any option for this (WiiM Ultra, latest firmware) and I think I once read that it’s not possible.

You should get the choice of Stereo or Individual channel just before the process starts.

 

[Burnside]

How do you handle individual channel measurements when a subwoofer is connected? I can’t find any option for this (WiiM Ultra, latest firmware) and I think I once read that it’s not possible.

“If the Subwoofer output is enabled, the Room Correction process will be limited to Stereo Room Correction only.”

See https://faq.wiimhome.com/en/support...ence-a-comprehensive-guide-to-room-correction

Edit: @WiiM Team, @WiiM Support , @RyanWithWiiM - if this is no longer the case, can the faq please be updated? Thx

 

[slartibartfast]

“If the Subwoofer output is enabled, the Room Correction process will be limited to Stereo Room Correction only.”

See https://faq.wiimhome.com/en/support...ence-a-comprehensive-guide-to-room-correction

That isn't true anymore

 

[Öggy]

Yes, exactly – that’s what I meant. In some posts here it sounded like it does work after all, so I’m a bit confused.

 

[slartibartfast]

Yes, exactly – that’s what I meant. In some posts here it sounded like it does work after all, so I’m a bit confused.

It does work. WiiM aren't great at documentation. It doesn't work with the moving microphone method yet but it does for standard sweeps and has done for a long time.

 

[Öggy]

Unfortunately, I still can’t find that setting.

 

[slartibartfast]

Unfortunately, I still can’t find that setting.

How far did you get? It is after the "babbling brook" sound.

 

[Öggy]

Yes, I’ve got it now – that was the right tip.

---

 

[Smartplug]

It does work. WiiM aren't great at documentation. It doesn't work with the moving microphone method yet but it does for standard sweeps and has done for a long time.

You like busting their chops and agree the roadmap been sitting there without getting updated for nearly a year.

 

[AlanB]

You like busting their chops and agree the roadmap been sitting there without getting updated for nearly a year.

Sounds like they have lost their way with the roadmap...

 

[CraigShaw]

I am delighted to report that @WiiM Support already positively replied to my suggestion including "we will add an option to assign a specific RoomFit profile to each output". So it is exactly as I said in one of my previous posts - it will just take (probably: not that long?) wait and in the meantime enjoying this great feature "as is". I am extremely happy with this - what a great customer service (as always)! Many many thanks to WiiM for their great job and to all of you for your support (and patience with my little rants)!

Wiim seem such a switched-on, customer orientated company. I didn’t see this post although I searched, and just asked for this myself.
Great news and great customer service!