Hi Everybody ,
Sorry about the delay in replying but my PC "died" ..... have now got a new laptop and in the process of updating everything & installing drivers .............

Anyhow, re my 3790lmt ,I went to the device content and all it showed were the words " MPC map", so I am totally confused ,the unit has NTU maps installed & the "my Gamin" page shows it as a 3790 LMT ??

Any help is appreciated ,(but replies may be delayed a while ,until I have everything re-instaalled and up to date)

Best Regards