As far as I know it's the original one John. It's a 2007 LC4. The map is on a cd behind the unit and is about 7 years out of date!
I am looking to update it in the next few months, with a branded double din touch screen sat nav, with more connectivity for playing music and taking calls off my phone etc, and get a reversing camera installed too. But I'll be getting the local audio tech specialist to do it for me!