I suspect this is issue is unrelated to upgrading to 3.0x firmware but thought I'd see if anyone else had a similar issue.
I have had no issues with my ipad2 or dl1608 (which I purchases shortly after its introduction) up until today. I upgraded my ipad this morning to latest rev and then upgraded from master fader 2.x (previously current version) to 3.0x (whatever was delivered from itunes). I plugged my ipad into the 1608 and things upgraded normally. The new software worked as expected for a few hours (wirelessly). After attempting to set up some sub groups the mixer became unresponsive. I tried several restarts of the mixer and ipad. I could not connect wired or wirelessly. With the ipad plugged into the mixer, master fader shows a message saying "getting device name". I eventually resorted to uninstalling master fader and reinstalling it with no improvement (along with loss of any stored shows). The mixer led's near the input gain controls blink normally when a microphone is attached. Thinking perhaps the firmware update didn't burn into non volatile memory correctly, I used the force update switch on the back of the mixer (white button). This caused the mixer to ask permission to load new firmware (as expected). This time the firmware update did not go as well. It did the transfer, crc, and installation of both part 1 and part 2, and then hangs indefinitely on message "firmware update complete... rebooting. this may take a while".
Since the new version of master fader did perform as expected for a few hours before problems developed, I expect this may be a coincidence. Of course this couldn't happen at a worse time, as I have a rehearsal with a 13 piece band tomorrow. Guess we'll be on the phone with tech support tomorrow.