WiiM Ultra Firmware v5.2.723250 Update - Jul 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.

5.2.723250 (In Progress)​

Release date:

7 / 15 / 2025

What's New:

1. Smart DNS Enhancement: Improved Smart DNS behavior by checking the legitimacy of the DNS server returned by the router.
2. HDMI ARC Upgrade:
   • Eliminated pop/crackle noises.
   • Added Auto-Sensing for instant TV-audio pickup.
   • Improved the stability of ARC connections.
3. Advanced Parametric EQ: High-Pass & Low-Pass filters now available (App v3.2.6+ required).
4. Deezer: "Play Next / Play Last" options added.
5. Bluetooth: Adjustable latency for perfectly synced audio.

Bug Fixes:

1. Soundtrack Pairing: Fixed an issue preventing successful soundtrack pairing.
2. Gapless Playback: Fixed an issue causing incomplete audio playback.
3. USB Indexing: Corrected the extraction of PNG format covers from MP3 files and fixed a crash issue that caused playback to stop.
4. Qobuz Connect: Fixed an issue where playback would automatically resume after pausing when using USB output.
5. Phono Input: Resolved a no-sound issue when editing input mode via the app.

​

 

[harkpabst]

Maybe it's time to get a little more serious again.

To some it may look like WiiM are completely clueless amateurs who don't maintain their code properly, don't know how to perform regression tests and don't care about breaking their customers' setups. This is certainly not the case. There are countless HDMI implementations out in the wild and it's close to impossible to make any change without affecting some devices. It's impossible to test against all TVs out in the market. The HDMI ARC standard is a bad standard. Period. As @Machiavelli pointed out in a humorous way every manufacturer of HDMI ARC compatible audio systems is constantly fighting this beast. In a perfect world there would be one correct way to implement the standard and everybody would be happy once this has been accomplished. Unfortunately, that's not how it works.

I'm not saying that everybody should just live with what they get. Quite the contrary. But the only way to help identify issues with certain configurations is to send feedback through the WiiM Home app whenever something doesn't work as expected. I really mean it. If you notice something strange with your setup, go ahead and report it. WiiM will not be annoyed but grateful for every piece of information.

And of course, their job is not just to fix your problem. It's always about a class of problems. Being upset might be a natural reaction but that doesn't help. Report what is working here but in the first place report what is not working through feedback.

 

[hgo58]

Maybe it's time to get a little more serious again.

To some it may look like WiiM are completely clueless amateurs who don't maintain their code properly, don't know how to perform regression tests and don't care about breaking their customers' setups. This is certainly not the case. There are countless HDMI implementations out in the wild and it's close to impossible to make any change without affecting some devices. It's impossible to test against all TVs out in the market. The HDMI ARC standard is a bad standard. Period. As @Machiavelli pointed out in a humorous way every manufacturer of HDMI ARC compatible audio systems is constantly fighting this beast. In a perfect world there would be one correct way to implement the standard and everybody would be happy once this has been accomplished. Unfortunately, that's not how it works.

I'm not saying that everybody should just live with what they get. Quite the contrary. But the only way to help identify issues with certain configurations is to send feedback through the WiiM Home app whenever something doesn't work as expected. I really mean it. If you notice something strange with your setup, go ahead and report it. WiiM will not be annoyed but grateful for every piece of information.

And of course, their job is not just to fix your problem. It's always about a class of problems. Being upset might be a natural reaction but that doesn't help. Report what is working here but in the first place report what is not working through feedback.

The problem with just reporting issues is, as you say, WiiM can't test on every TV brand and due to that, they, in many cases, cannot replicate the issue.

I have raised several tickets over the last year. Mainly about the behaviour of HDMI CEC when the HDMI settings are all OFF. The @WiiM Team is misunderstanding the issues every time. Probably because they don't see the same behaviour in their test setup. Even when I did a beta test where everything worked as expected, they didn't implement it and instead did something else that broke the implementation even more.

I don't know if other manufactures do the same but the lack of a common use case descriptions is for sure a problem with HDMI CEC.

 

[harkpabst]

If there's a communication problem it needs to be addressed by both parties, I think.

 

[s3igell]

@harkpabst The HDMI ARC standard is a bad standard. Period.

The HDMI Standards Group isn't really as much a "Standards" group as a "Marketing" group whose main goal is the continued proliferation of "HDMI-capable" devices and the suppression of competing standards; AND the collection of Annual Licensing and Royalty Fees.
A true Standards-oriented group wouldn't take a "As long as ONE Feature of the New Standard is Implemented then the Manufacturer is allowed to label the unit as having the New Standard (and use all associated labeling)".

 

[jamster]

To some it may look like WiiM are completely clueless amateurs who don't maintain their code properly, don't know how to perform regression tests and don't care about breaking their customers' setups. This is certainly not the case. There are countless HDMI implementations out in the wild and it's close to impossible to make any change without affecting some devices. It's impossible to test against all TVs out in the market. The HDMI ARC standard is a bad standard. Period.

People may be misunderstanding the issue here. Everyone knows that HDMI Arc is a hot mess of compatibility issues. It's for *that very reason* that if one achieves a stability, it is disappointing to lose that stability because WiiM has introduced new changes to the HDMI Arc code, apparently to fix other reported issues. It is "robbing Peter to pay Paul", as the saying goes.

Interestingly, this link explains the exact same symptoms I am seeing, but for another vendor's product. It seems probable to me that the LG TV is somewhat to blame. OTOH, it's one of the most popular OLEDs on the market.

Naim Atom HDMI and HDMI CEC (Simplink) connectivity problems with LG TV GX (OLED65GX6LA)

Hello, My Atom HDMI doesn’t fully wake up (with that “click” sound) when I turn ON the TV. I see HDMI on the display but when I hear the “click” (rely sound when switching input) the sound works, if I don’t hear that sound then bad news. The LG TV switches automatically to Internal speakers why...

community.naimaudio.com

 

[harkpabst]

Interestingly, this link explains the exact same symptoms I am seeing, but for another vendor's product. It seems probable to me that the LG TV is somewhat to blame. OTOH, it's one of the most popular OLEDs on the market.

One of the most popular and one of the most often mentioned as causing trouble in this forum.

Even different model families might behave differently.