Hello guys,
This is Kris from modmynav.com, and finally figured out some codes to get hardtop down via remote keyFOB.
Z4 in the video clip below, doesn't have OEM alarm, Comfort Access or SmartTOP module installed, but still can open the hardtop with all windows at same time.
Also enabled digital speedo and disabled iDrive Disclaimer.
Enjoy and let me know if you have any questions!