FW Update Announcement_MoerDuo
Firmware Update
MoerDuo™ Auracast Transceiver · Version V3.7.1
Released March 31, 2026
A simpler way to control your audio. With V3.7.1, you can now switch the sampling rate directly on the device — no PC Tool required.
What’s new
Switch between sampling rates using intuitive button controls, enabling faster setup and a more seamless user experience.
How to switch
1. Enter Auracast mode
2. Click the Power button, then press and hold the Power button
LED feedback
Fast flash ×3
24 kHz
Steady on (1–2 sec)
48 kHz
Firmware download
Download Firmware
App: AirohaSDK_UT-v3.5.0.2022122118-release.apk
Guide: FOTA Upgrade Guide – MoerDuo 3.7.1
Firmware: AHA02_V3.7.1_Diff.bin
24 kHz is recommended for optimal hearing aid performance.
Please follow the FOTA upgrade guide carefully before starting the update.