We just bought our first Garmin GPS unit, a Nuvi 2797LMT while on vacation, when it became abysmally clear that trying to navigate with a smartphone in the Rocky Mountains is impossible. Had to exchange the first 2797 within 3 days when it started freezing up and turn by turn voice stuttering and cutting out.
The 2nd 2797 has worked for about 5 days, then the same malfunctions. So before giving up and returning it to BestBuy within their allotted 15 day period, I wanted to try a software update. It is now updated to Firmware 4.5. And I have already found one new feature, the custom avoidance of specific roads (a sorely needed feature, for sure!). But being new to these, I have no idea what most of the original features were. So I'd like a "this has changed" article or manual regarding Firmware 4.5 so I can read about any new features and fixes. I can't find this information. Where should I look?