I must have just squeezed by as I should have mine next week.
I've also talked with my stereo shop about figuring something out but the homelink would be ideal. Gthaus did say the signal was radio so I have some hope. It's just hard to find any specs on the remote to figure it out. I'll email Gthaus to see if I can get more info.
2012 550i M Sport Jet Black
Dinan Stage 4, Meisterschaft EV Controlled, Vorsteiner Aero Kit, Vorsteiner VS-310's, KWV3's, Blacked out little parts, JL Audio 10W7 in the boot