1. Nav: State was not being remembered always reverted back to Washington, D.C. Fixed.
2. Nav: Every time I started the Nav, I would get the initial warning screen. Fixed.
3. Radio: Would not remember the last item selected after the RAP (Retained Accessory Power) period had expired and always defaulted to Favorite 1 when restarting. Fixed.
I have had my Nav/Radio unit replaced at least once. So even if you get the software update, if you have an older, faulty Nav/Radio, it may not fix it in which case you would require the unit to be replaced.