WiiM Amp Pro Firmware v5.2.717556 Update - May 20, 2025

Please review the WiiM Amp Pro 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.

5.2.717556 (In Progress)​

Release date:

5 / 20 / 2025
What's New:

1. Group Mute/Unmute via Group Lead Device: Instantly mute or unmute the entire speaker group directly from the group lead device for seamless group control.
2. Improved Group Playback Sync: Fixed synchronization issues that occurred after applying subwoofer and main speaker delay calibration.
3. Enhanced DSD Playback: Resolved stuttering during multi-channel DSD file playback for smoother high-res listening.
4. Queue Limit Update: Playback queue is now capped at 3,000 tracks to improve performance. Further optimizations are in progress.
5. Knob Volume Step: Adjust the volume step when rotating the knob (requires the upcoming app update).
6. Audio Input Management: Choose which audio inputs to display and switch between them easily.

Bug Fixes:

1. A/V Sync Optimization: Enhanced audio/video synchronization for HDMI ARC to improve lip-sync accuracy.
2. Plex Playback Fix: Resolved playback failure when Secure Connections is set to "Required".
3. TIDAL Connect Fix: Addressed the issue of track skipping delay and corrected track duration when using the HTTP API.
4. HDMI Behavior Adjustment: Reinstated automatic switching to HDMI input when other sources stop playback and TV audio is active. Note: Power-off CEC behavior for standby mode will be added in the next release.
5. Queue Limit Update: Playback queue is now capped at 3,000 tracks to improve performance. Further optimizations are in progress.