WiiM Ultra Firmware v5.2.738432 Update - Dec 12, 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.

5.2.738432 (In Progress)​

Release date:

Dec 12, 2025

General Improvements:

1. Wi-Fi: Stronger connection stability; improved compatibility with Wi-Fi 7 routers.
2. Sync Audio: More accurate calculations at low volume.
3. Audio Spectrum: Better timing alignment with playback.

Music Services:

1. Qobuz: Stabilized progress bar; fixed shuffle dropouts, playback-mode mismatch, and missing artist/track metadata.
2. Soundtrack: Updated SDK; fixed disconnects when renaming the device during playback.
3. SoundCloud: Fixed playback stops, genre-preset failures, and unexpected logouts.
4. Plex: Added remote streaming over WAN.
5. Amazon Music: Fixed position reset after back-to-back seeks.
6. USB Library: Fixed disappearing album art.
7. NAS: Fixed missing metadata.
8. TIDAL Connect: Fixed playback interruptions after ~1 hour.

Playback Enhancements:

1. Local files: Automatically skips unplayable tracks to continue playback.
2. Seeking: Fixed next-track failures when seeking in the last 5 seconds.
3. Stability: Reduced intermittent dropouts via synchronization optimizations.
4. Resumption: Music now returns to the foreground after alarms or timers.
5. Queue: Fixed crashes related to queue management and multiroom group naming.
6. Radio: Resolved failures for certain station formats.

Bug Fixes:

1. USB Out: Fixed a power issue that blocked standby while using USB output.
2. EQ: Fixed a rare exception that caused no sound.

 

[HansD-NL]

"TIDAL Connect: Fixed playback interruptions after ~1 hour."

Can we get more information about this fix? There have been a lot of messages and discussions about playback interruptions concerning Tidal on the forum for some time now....

 

[Antagron]

Can you give a little bit more information regarding Audio Spectrum: Better timing alignment with playback?

 

[Mr Ee]

Can you give a little bit more information regarding Audio Spectrum: Better timing alignment with playback?

Not trying to be funny, but I'd have thought it was fairly self evident.
Right now, before the update, the spectrum doesn't match the music. It's so obviously out of sync, like poor lip sync, that it's painful to watch.

 

[Antagron]

Not trying to be funny, but I'd have thought it was fairly self evident.
Right now, before the update, the spectrum doesn't match the music. It's so obviously out of sync, like poor lip sync, that it's painful to watch.

Yes, I get that it's currently slow enough to effectively be just a visualization that resembles the music but isn't actually useful as a real time tool, unlike RME or Topping displays. I'm looking for technical details, did they improve the performance by 30%, what frame rate does it run at now, how much input lag is there. You can improve by 1% and claim it's improved, but that is not enough to make me want to use it. This and the VU meter need to be approaching 60fps with like 50ms of input lag to be "useful" and not just a novelty.

 

[veskop]

For me, this update is not available... When I check, it say - Up to date. Version is 5.2.736552

 

[bever70]

For me, this update is not available... When I check, it say - Up to date. Version is 5.2.736552

All wiim updates are ROLLED OUT IN STAGES!
Wait a few days, breathe, and all will be well in the world and with your wiim.

 

[Skull]

All wiim updates are ROLLED OUT IN STAGES!
Wait a few days, breathe, and all will be well in the world and with your wiim.

More like a week in my case
No worries everything works without it

 

[JAB]

...breathe, and all will be well in the world and with your wiim.

Sure breathing will help?

 

[veskop]

Ok, thanks. Not a big deal anyway

 

[mpr]

More like a week in my case
No worries everything works without it

Pretty sure washing and styling your hair helps too

 

[CliffyBC]

I look at these firmware updates with a feeling of trepidation and anticipation. There's usually at least one thing that I would see as an improvement or additional feature and the rest probably don't do anything positive in my usage case.
Twice now they have broken a feature that is important to me which is somewhat annoying, requiring me to go through the ticketing process after checking everything at my end. I recently received a Firmware update which wasn't documented at all on this forum which killed my Plex connection stone dead. Plex connected on my TV, phone, tablet etc but the Home App wouldn't see the server and connect.
A couple of tickets and 2 weeks later, I asked Wiim just to roll back my firmware back to the version that I knew worked which they did.
Yep, it was back working a treat straight away.
The moral of this rather convoluted tale is "don't be in a rush for these updates, they may bring you untold riches or as in my case, grief.

 

[hgo58]

Just got this update.

Unfortunately I can see that the HDMI CEC issue many of us have, is still not fixed.

The settings in the WiiM Home App for HDMI have changed (reversed option) but the WiiM Ultra still highjackes the TV sound, even in standby mode.

The HDMI auto-sensing toggle also don't work, as the WiiM Ultra always changes to TV input, independent of the auto-sensing settings, when the TV is turned on.

 

[pieterv1]

The HDMI auto-sensing toggle also don't work, as the WiiM Ultra always changes to TV input, independent of the auto-sensing settings, when the TV is turned on.

Sounds like HDMI CEC will override anything, which seems logical to me. If you don't need the Ultra to change to TV input, then adjust/disable the CEC settings on the TV itself? Important to remember that HDMI CEC (device control) and HDMI ARC (digital audio) are two separate protocols.

It's been a while since I've tested this, but I believe the auto-sensing of the (digital) inputs is based on receiving an actual audio stream (through ARC)

 

[hgo58]

Sounds like HDMI CEC will override anything, which seems logical to me. If you don't need the Ultra to change to TV input, then adjust/disable the CEC settings on the TV itself? Important to remember that HDMI CEC (device control) and HDMI ARC (digital audio) are two separate protocols.

It's been a while since I've tested this, but I believe the auto-sensing of the (digital) inputs is based on receiving an actual audio stream (through ARC)

The way WiiM has currently implemented the CEC discovery makes it impossible to overwrite on some TV models (e.g. Sony). Only workaround is to disconnect the HDMI cable unless I actually want the TV sound from the WiiM Ultra.

There have been beta test firmware where this was correctly implemented, so that the option "Use HDMI Audio Only in HDMI Mode" actually did what it say. This has just not been included in the main firmware, although the first test was almost a year ago. At the moment this option and the HDMI auto-sensing option does nothing in my setup.

 

[pieterv1]

The way WiiM has currently implemented the CEC discovery makes it impossible to overwrite on some TV models (e.g. Sony). Only workaround is to disconnect the HDMI cable unless I actually want the TV sound from the WiiM Ultra.

There have been beta test firmware where this was correctly implemented, so that the option "Use HDMI Audio Only in HDMI Mode" actually did what it say. This has just not been included in the main firmware, although the first test was almost a year ago. At the moment this option and the HDMI auto-sensing option does nothing in my setup.

I see!

Sounds like the option to ignore specific CEC commands on the WiiM unit itself would solve a lot of issues for specific setups.

 

[hgo58]

I see!

Sounds like the option to ignore specific CEC commands on the WiiM unit itself would solve a lot of issues for specific setups.

It's actually very simple

With the option "Use HDMI Audio Only in HDMI Mode" disabled (the default) the CEC discovery shall be enabled all time. This will cause the WiiM input to change to TV input when ever the HDMI is active (TV turned on) and also allow HDMI auto-sensing to work.

With the option "Use HDMI Audio Only in HDMI Mode" enabled, the CEC discovery shall only be active when the WiiM Ultra input is (manually) set to TV (HDMI). In this way the TV will only change to external speakers when required and else stay on internal speakers.

This was, more or less, how it worked when I got the WiiM Ultra in August 2024. Later on this was broken by an firmware update.

 

[Audioslave]

It's actually very simple

With the option "Use HDMI Audio Only in HDMI Mode" disabled (the default) the CEC discovery shall be enabled all time. This will cause the WiiM input to change to TV input when ever the HDMI is active (TV turned on) and also allow HDMI auto-sensing to work.

With the option "Use HDMI Audio Only in HDMI Mode" enabled, the CEC discovery shall only be active when the WiiM Ultra input is (manually) set to TV (HDMI). In this way the TV will only change to external speakers when required and else stay on internal speakers.

This was, more or less, how it worked when I got the WiiM Ultra in August 2024. Later on this was broken by an firmware update.

Software regression testing is very important.

 

[hgo58]

Software regression testing is very important.

Yes but in this case the functionality was, for some reason, changed by purpose.

A described, it is easy to revert it to be functional for all again.

 

[QuarryHunslet]

My Ultra has now received this update, without any notification of an update being available, or any user intervention from myself, and I have been checking many times each day since it was announced here.