Little late to the party on this one, but I cannot figure it out. I've discovered on M mode, I can change the shutter speed from 30 seconds to Bulb. But you have to hold the shoot button down which is impossible. Then I hear you can make it work using the app (which is the worst btw). But I can't switch it to bulb on the app. No idea how to do it. Tried via wifi and just Bluetooth ( which is also a nightmare to set up ). Any ideas?