got a 910

[fasterem]

Ok yes its me again lol sorry, I am going to try again, finnally got the guy I bought that 510 from to respond and take it back, so I bought a 910, thinking from all my research after getting 510 that the 910 is a much better/way more options GPS, hope I am not wrong lol, a few questions I do have, I did an explorer back up from SD card on 510, if for some reason I would need that back up for 910 would it work for maps? They say it does have maps installed on 910 but I am just wondering, also does the 910 have text to speach on all streets and turns? I thought I read a review somewhere that it was only reading interstates or something.
Thanks again

 

[dhn]

You can't interchange maps between devices, so a backed up map from a 510 can't be restored onto a 910.
Make a separate Explorer backup of the 910's contents.

Text to speech computer voices announces all streets involved in a route, not just highways.