Request for ICU-20201 Firmware Files (icu20201_fw.c/h) for SonicLib SDK

By skhandcdtcokr , 23 September 2025

Hello TDK InvenSense Support Team,

I am currently developing with the ICU-20201 ultrasonic ToF sensor.
I have downloaded the Hello Chirp Example package (version 2.31.0), but it does not include
the firmware source files (icu20201_fw.c and icu20201_fw.h).

Could you please provide me with the official firmware package or grant me access to the
download location for ICU-20201 firmware?

Thank you for your support.

Best regards,
Han

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