WiiM Sub Pro Firmware v5.2.803853 Update - Jan 7, 2026

Please review the WiiM Sub 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.

5.2.803853 (Latest)​

Release date:

Jan 7, 2026

Bug Fixes :

1. Unexpected Wake-up: Fixed unexpected wake-ups when an RCA cable is connected.

 

[QuarryHunslet]

My Sub Pro is downloading this update now.