WiiM Ultra Firmware v5.2.717053 - May 15, 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.

5.2.717053 (In Progress)​

Release date:

5 / 15 / 2025

What's New:

1. New Radio Widget: Quickly select and play a radio station directly from the screen.
2. Audio Input Management: Choose which audio inputs to display and switch between them easily.
3. Improved Group Playback Sync: Fixed synchronization issues that occurred after applying subwoofer and main speaker delay calibration.
4. Enhanced DSD Playback: Resolved stuttering during multi-channel DSD file playback for smoother high-res listening.
5. Group Mute/Unmute via Master Device: Instantly mute or unmute the entire speaker group directly from the master device for seamless group control.
6. Device Discovery Enhancements: Improved stability and connectivity for WiiM Home, Spotify and TIDAL apps.
7. Knob Volume Step: Adjust the volume step when rotating the knob (requires the upcoming app update).

Bug Fixes:

1. A/V Sync Optimization: Enhanced audio/video synchronization for HDMI ARC to improve lip-sync accuracy.
2. Plex Playback Fix: Resolved playback failure when Secure Connections is set to "Required".
3. Standby Mode Fix: Resolved an issue preventing the device from entering standby mode when in follower mode.
4. TIDAL Connect Fix: Addressed the issue of track skipping delay and corrected track duration when using the HTTP API.
5. General Performance: Stability improvements and behind-the-scenes optimizations.

 

[Valentino]

^I’m happy that WiiM kept the fine adjustment on the volume knob. Those 0,3 dB steps are one of the great functions on the products.
Of course coarser is nice for those in need.

 

[canard]

^I’m happy that WiiM kept the fine adjustment on the volume knob. Those 0,3 dB steps are one of the great functions on the products.
Of course coarser is nice for those in need.

(with mono function / precise balance, on all Wiims via Wiim Home
;-)
)

 

[SirBrause]

Hi
Somehow the volume keeps adjusting itself from 100% to 97% after a while.

 

[SirBrause]

I've now reset the Wiim Ultra to factory settings and am keeping an eye on it.

 

[Teflon490]

Yes, I also observe the volume to be randomly setting itself lower, could not find the pattern for it yet but it is definitely after the last update that was again installed without me knowing, something I hate the most!
Also, the screen now randomly turns itself on for no reason when in standby, and after the set timeout goes off again. Happens several times a day.

 

[fpentaris]

Yes, I also observe the volume to be randomly setting itself lower, could not find the pattern for it yet but it is definitely after the last update that was again installed without me knowing, something I hate the most!
Also, the screen now randomly turns itself on for no reason when in standby, and after the set timeout goes off again. Happens several times a day.

I also see that wiim ultra is leaving standby mode without any reason. My device is connected with my TV via optical in. It is also connected to my external dac via USB. All auto sensing settings are disabled. Nevertheless, I think that wiim ultra senses the optical in and leaves standby mode without any other reason. I recently opened a ticket and support told me that the last time wiim had switched on was due to me changing the volume. Still, I think that wiim has a bug and switches on randomly. Or perhaps my device has a hardware issue and senses phantom screen touches or phantom audio volume modification... I will keep an eye on this issue

 

[harkpabst]

I also see that wiim ultra is leaving standby mode without any reason. My device is connected with my TV via optical in. It is also connected to my external dac via USB. All auto sensing settings are disabled. Nevertheless, I think that wiim ultra senses the optical in and leaves standby mode without any other reason. I recently opened a ticket and support told me that the last time wiim had switched on was due to me changing the volume. Still, I think that wiim has a bug and switches on randomly. Or perhaps my device has a hardware issue and senses phantom screen touches or phantom audio volume modification... I will keep an eye on this issue

It will switch on occasionally to check for updates.

 

[nickhews]

I complained recently about having firmware updates forced onto my Ultra, but the Wiim response to my request to change this was somewhere between enigmatic and 'No'.
Despite being connected almost constantly I am still on f/w 5.2.715362, and don't even get the blue highlighters from the previous version to say an update is available. Yes, I have power-cycled and disconnected (twice).
In view of the issues reported above I don't know whether to feel neglected or happy!
Is anyone else still 'In Progress' ?

 

[Teflon490]

It will switch on occasionally to check for updates.

But it did not switch on the display 3 times a day while doing it, prior to May 15th update...

 

[durts51]

Hi, I want to share with you what happens to my device when I try to play the files storaged in the sd card inside my mobile. It is not the sd card because it works perfectly with th play-fi app of my svs soundbase pro. I already tried resetting the wiim ultra to factory values. I already tried unplugging it from the power supply.I already tried installing a previous version of Wiim home app (when I did it, it didn't recognize the sd card at all) This thing started happening since the update. Does this same thing happen to you? Any idea how to fix it?

 

[erictheperic]

Pretty random question, but Ultra-update-related:

Has anyone else noticed changes in baseline volume per input within the last few updates?

I use Optical IN for sound from my PC and Ethernet for streaming from my NAS, and volume between those inputs was equal before, but somewhere this has changed so that the Optical IN is quieter (or Ethernet louder), making me have to adjust the volume every time I switch inputs.

 

[hgo58]

Hi, I want to share with you what happens to my device when I try to play the files storaged in the sd card inside my mobile. It is not the sd card because it works perfectly with th play-fi app of my svs soundbase pro. I already tried resetting the wiim ultra to factory values. I already tried unplugging it from the power supply.I already tried installing a previous version of Wiim home app (when I did it, it didn't recognize the sd card at all) This thing started happening since the update. Does this same thing happen to you? Any idea how to fix it?

See Thread '‘My Music’ struggling to load local files on phone and tablet' https://forum.wiimhome.com/threads/...to-load-local-files-on-phone-and-tablet.7270/

 

[durts51]

See Thread '‘My Music’ struggling to load local files on phone and tablet' https://forum.wiimhome.com/threads/‘my-music’-struggling-to-load-local-files-on-phone-and-tablet.7270/

Thank you, mate. It is good to know that I'm not the only one with this issue.

 

[harkpabst]

Pretty random question, but Ultra-update-related:

Has anyone else noticed changes in baseline volume per input within the last few updates?

I use Optical IN for sound from my PC and Ethernet for streaming from my NAS, and volume between those inputs was equal before, but somewhere this has changed so that the Optical IN is quieter (or Ethernet louder), making me have to adjust the volume every time I switch inputs.

Pre-gain settings might have been reset. Usually, this does not happen between firmware updates, but it could be the case. If you did factory reset your Ultra at any point in time, the Pre-Gain settings were lost for sure.

In any case, simply adjust pre-gain now, so you don't have to adjust the volume whenever you are switching inputs.

 

[WiiM Team]

Thank you, mate. It is good to know that I'm not the only one with this issue.

Hi @durts51,

Thank you very much for your feedback and the video.

I will urge the team to investigate this issue as soon as possible and keep you updated on our progress.

 

[erictheperic]

Pre-gain settings might have been reset. Usually, this does not happen between firmware updates, but it could be the case. If you did factory reset your Ultra at any point in time, the Pre-Gain settings were lost for sure.

In any case, simply adjust pre-gain now, so you don't have to adjust the volume whenever you are switching inputs.

Thanks for you reply, appreciated!

I haven't used the Pre-Gain settings before, so that doesn't explain my case, but will try it out to solve the issue.

Does Pre-Gain alter anything quality-wise?

 

[harkpabst]

Does Pre-Gain alter anything quality-wise?

It potentially can, if you use too much positive pre-gain, which could result in digital clipping. If you wan to be on the safe side, use negative pre-gain for loud sources, only.

In practice, this might mean giving up some SNR for no reason, though. The HDMI ARC input signal is often clearly below 0 dBFS (the maximum digital level). So, if your TV volume is always way lower than e.g. your streaming services, no matter what source is connected to the TV, then there's nothing wrong with applying some positive gain, maybe 3 to 6 dB.

The analogue input is another candidate. If you connect the analogue output of a CD playerto the RCA in, the level might be on par with your streaming sources. But if you connect a phono pre-amp or a turntable with a built-in pre-amp or a tuner or a tapedeck, then the input might be very quiet in comparison. If you add some positive gain here, you might elevate the noise floor a tiny bit (for this single, already inherently noisy analogue source). But if you reduce the pre-gain for your digital streaming sources instead, you're giving up dynamic range of this (close to) perfect source just to end up with equal levels.

TL;DR
Don't shy away from adding 3 to 6 dB of positive pre-gain to HDMI and analogue in. Reduce pre-gain to negative values for other sources until you get a good level matching.

 

[adias]

Still testing, but I’m finding streaming issues with QC and this latest Ultra FW. Selecting Ultra as a QC node I had a few cases where the stream was not locking with the external DAC correctly, having the need to stop playing and restarting. Anyone heard this?

 

[Fralle]

I have been having lots of problems lately. Like no sound from any of the inputs no matter how I do. Only way to get it working is to reboot. Also things like when listening on a record it automatically switches to the network input for no reason. Am I the only one?

 

[Ronnie D]

Only way to get it working is to reboot

Have you tried a power cycle instead of a reboot? Remove the power supply for a min or two then try again.