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.

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[Ethan.SS]

There is definitely an issue with this firmware update.

My system has worked perfectly for months.

This update totally breaks HDMI Arc. In my case - sometimes when it switches to HDMI Arc - there is no sound. The TV reverts to Internal Speakers. Switching it back to HDMI Arc doesn't work until I power cycle both the WiiM and the TV. LG G4.

How do we roll back to a working system? This firmware entirely breaks my set up - clearly not regression tested properly. It's definitely a firmware issue not a troubleshooting issue as the setup has worked smoothly for a long time prior to this update.

Apologies for the inconvenience. Please send us a feedback from the WiiM Home App>More tab>Feedback, we will check the log and roll back your device to the previous firmware.