How to load custom firmware for Esau sound driver

[walfin]

My no-brand mini China laptop has a custom sound driver that works on Windows 11. It's a variant of the ESAU (Everest Semiconductor) driver.

Is there any way to install a custom firmware file (it's a .bin file) somewhere and modprobe a generic ESAU driver?

I'm disallowed from uploading the firmware file. The version number of the ESAU driver is 12/08/2020,18.37.4.33

The mini China laptop is an OEM version of the Nanote P8.