This firmware update is being rolled out in stages, with devices updating sequentially over the next few days.
It's important to note that the device's firmware version is distinct from the WiiM Home App version. To check your device's firmware version, open the WiiM Home App, go to the 'Device' tab, tap the 'gear icon (Cog Wheel)' for device settings, select 'Device Info', and then view 'Firmware Version'.
5.2.826034 (Latest)
Release date: August 12, 2026
Bug Fixes
1.
Playback: Reduced playback stuttering.
5.2.825340
Release date: August 5, 2026
General Improvements
1.
Standby: Fixed an issue that prevented WiiM Sub Pro from entering standby mode.
5.2.824652
Release date: July 29, 2026
What's New
1.
WiiM Sub Pro: Increased the subwoofer output level when using RCA Input.
5.2.812352
Release date: March 30, 2026
What's New
1.
Sound Mode: Adds Movie and Music modes for different listening scenarios.
5.2.805750
Release date: January 26, 2026
What's New
1.
Unexpected Wake-up: Fixed unexpected wake-ups when an RCA cable is connected.
2.
Sound Level: Optimized the volume meter for clearer and more balanced sound at low volumes.
5.2.803853
Release date: January 7, 2026
Bug Fixes
1.
Unexpected Wake-up: Fixed unexpected wake-ups when an RCA cable is connected.
5.2.736145
Release date: November 20, 2025
What's New
1.
Sound Level: Optimized the volume meter for clearer and more balanced sound at low volumes.
2.
Standby: Resolved an issue where Sub Pro could enter standby during playback.
5.2.732142
Release date: October 11, 2025
Bug Fixes
1.
Playback Stability: Fixed a crash issue that could interrupt bass output.
2.
Sound Level: Optimized the volume meter for clearer and more balanced sound at low volumes.
3.
RoomFit™: Auto-adjusts test volume for accuracy at low levels.
5.2.724241
Release date: July 25, 2025
What's New
1.
Advanced Subwoofer Room Correction: Enhanced Subwoofer Room Correction now available for WiiM Sub Pro (requires the upcoming app version 3.2.8)
2.
Improved Playback Synchronization: Playback sync has been enhanced when using the RCA input.