Hi, I have been using IPP 12.9 2nd gen with lightning-HDMI adapter to give presentations at work. I updated from iPad OS Public 1 to 2 released on Monday. When I connected my IPP to a projector, there was no signal. I tried another project, same issue. When I plugged in my iPhone 6s+ using the same adapter to the projector, it worked. What can I do in this case? Can I roll back to iPad OS Public 1?