I have a avic-7100nex and updated the firmware from 1.03 to 1.05.  The update was successful but when I used the navigation I lost all sounds from Alarms, Beeps, Warning and Announcer. I tried the factory reset within Navigation but still the same issue.  I went through changing the Voice Announcer and still the same issue.  Has anybody come across this issue before?  Much help would be appreciated.  Thanks

****update****

Figured out what happened, Pioneer Support informed me the Navigation Sound (Voice TTS, Beeps and Alarms) will only come from the front speakers.  Apparently, my RCA cables from my 4 channel Amp was reversed.  All this time I was listening to my rear connection and not the front. (Doh!!)  I corrected the cable and now I am able to hear the Navigation Sound.