WiiM Ultra Firmware v5.2.813259 - Apr 8, 2026

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.

5.2.813259 (In Progress)​

Release date:

Apr 8, 2026

Highlights:

1. Sub & Main Speaker Sync: Automatically aligns subwoofer and main speakers for improved timing at the listening position.
2. Per-Input Screen Control: Enable or disable the screen display for each input mode.
3. Headphone EQ: Added independent EQ for headphone output optimization.
4. Standby Source Mode: Automatically switch to a selected input when entering standby, enabling instant playback.
5. Spotify Smart Play: Resume your latest listening session with a single tap.
6. Surround Setup: Simplified setup with full backward compatibility. (requires upcoming app update).

Screen:

1. Playback Screen: Added a vinyl-style playback screen for a more immersive experience.
2. Localization: Added French language support.

Playback & Audio:

1. Playback Latency: Reduced delay when starting playback.
2. EQ: Improved responsiveness when adjusting and switching EQ settings.
3. Line In: Fixed distortion during extended playback sessions.
4. Bass Output: Fixed low bass levels for Apple TV (Dolby 5.1).
5. Audio Sync: Improved sync accuracy at microsecond level for better group playback (requires upcoming app update).

Radio & Streaming Services:

1. TIDAL Connect: Upgraded SDK to resolve unexpected playback interruptions.
2. Soundtrack: Updated SDK for improved playback stability and performance.
3. TuneIn: Fixed playback issues for certain stations and improved resume behavior after long pauses.
4. Deezer: Fixed unexpected playback interruptions.

General Improvements:

1. Wi-Fi: Improved network stability and enhanced compatibility with Wi-Fi 7 routers.
2. HDMI ARC: Disabling automatic audio output now correctly keeps WiiM in standby and defaults to the TV speakers.
3. HTTP Server: Improved concurrency and stability under high load.
4. Audio Input: Fixed playback crash issues.
5. Remote: Fixed occasional disconnection and unexpected max volume issues.
6. Alarm: Fixed incorrect alarm and preset volume behavior.
7. Roon: Fixed occasional crash issues.
8. EQ: Enables EQ for Dolby 5.1 playback.
9. Alarm: Fixes BBC and vTuner alarms defaulting to the chime.
10. Spectrum Display: Improves dynamic visualization.
11. Qobuz Connect: Fixed occasional playback stopping issues.

 

[hgo58]

The option is there but the detection is automatic and enters anyway, after all that's how it works. If anything, the option must disable HDMI Arc and not set or detect it otherwise it will automatically introduce it.

It do turn off CEC on the WiiM and that prevents ARC from being used. I don't understand why that doesn't happen in your case?

What is your input selection on the WiiM?

What happens if you remove the HDMI cable?

 

[hipoagumol]

The HDMI ARC connection was disconnected. With my Samsung TV, which has HDMI ARC support, no matter how I set it, the Samsung TV always detects WiiM It's up to WiiM to disable HDMI ARC. It doesn't, so the Samsung TV, seeing the active connection, mutes the speakers and automatically sets HDMI ARC. To prevent this from happening, I need to disable

HDMI ARC on the TV, but this solution isn't practical because control with other devices, like the Fire TV, no longer works. While waiting for an option to disable the HDMI ARC function on WiiM, I need to unplug the HDMI cable.

@Apache Have you tried these settings?
Auto sensing off Hdmi OFF
Use HDMI Audio Only in HDMI Mode ON
Use TV Speakers when HDMI is inactkve ON

This has to work. Your TV wont mute its own speakers unless you manually selected hdmi output in the ultra.
It works for me.

 

[Andriy]

It seems to me that after the latest update, the sound has become somewhat worse — kind of flat and not very expressive. Have you noticed that?

 

[Burnside]

It seems to me that after the latest update, the sound has become somewhat worse — kind of flat and not very expressive. Have you noticed that?

Not personally