Help Using iCade with Bluetooth and not with GPIO

[DJ PC Board]

Hi, i'm using my recalbox with a PS3 controller, and now i'm thinking to use my iCade but i don't want to break it. I wan't to use it with their bluetooth capabilities and not using the GPIO like other users... Can you help me on how to do it? The only information i have it's this: http://www.thinkgeek.com/files/iCADE/iCade_Dev_Resource_v1_3.pdf Thank You very much!!