Flashing my IPEGA PS4 PD controller

Hey guys, I just got the IPEGA Project Diva PS4 controller and I want to connect it to my steam deck, it won't connect by just plugging it in but I found out I can reflash it so the steam deck will read it as a PS4 controller. The problem it the only place I can find a guide doesn't work anymore, as in the link that was provided with the guide isn't functional, I tried looking it up some more but I can't find any other guides out there. Does anyone know how to do this or can provide a video or guide to reflashing the controller? thanks in advance.