zak_ku
don't know how to do this things:
Change all vid & pid values to the same as your mouse
Change 'build.usb_manufacturer' and 'build.usb_product' to your mouse's manufacturer and name
Locate \AppData\Local\Arduino15\packages\rp2040\hardware\rp2040\3.6.0\cores\rp2040\RP2040USB.cpp
CTRL-F 'if (USBInstallMouse || USBInstallAbsoluteMouse)'
Change 0x4000 to 0x0000 in the if statement