USB Audio demo version - any tips for patching a driver?

[bolo2002]

Originally Posted by an0rma1

Hi.

I've never touched a Windows driver, so i ask this question.

Last version of my usb sound card is demoed/crippled, so every 30 segs it does
a "beep".

demod/crippled driver from a retail hardware you bought?!!!

[an0rma1]

Not really, it came with USB audio driver. Years later i found they were developed by some company, they have a new version of it, 64bits etc, but i found the driver.
This dac is very good for the price it has (it keeps selling), Behringer uca-202, you can get it around 30$ brand new.
The updated driver cost 60E (more than double of DAC), crazy.

https://www.usb-audio.com/

I'll try to keygen it using IDA, tracing and debugging kernel drivers is not my field by far.