Decided to try the downgrade from 2.78 to 2.77. The Nokta tool said it was successful but warned that I was downgrading. Everything seems to work fine until I connect the wireless headphones. After a few minutes the Simplex will lock up and have to be forced off. Without the headphones connected it works fine. I also noticed that with 2.77 it will not let me do a factory reset. Upgrading back to 2.78 fixes all these issues. I've downloaded the 2.77 update several times with three different web b