I've successfully configured ET 3.5.0 in my app and have been able to send push notifications to the device from the ETMC as well.
Unfortunately, there's an empty push notification on my device each time I install the app. I haven't seen it on upgrade (so far), but it's really annoying to have an empty push show up even in release variants of the app.
How can I fix this?
please NOTE - I've experienced the same issue using ExactTarget v4.0.x as well.