Hi Guru's,

I have the Garmin Oregon 450, purchased to put marine maps and city navigator on.

I have downloaded the files Garmin BlueChart g2 Vision VEU706L - UK & Ireland v2012.5 (v14.00) it contains a file gmapsupp.img 3,858, 880KB.

I have copied this .img onto an SD card and can view the maps in Garmin Homeport.

I have tried to copy the same file to the G drive (the SD card in the Oregon when connected via USB), when the GPS restarts it says Can't read maps. I tried copying the Gimgunlock.exe to the G drive and dragged the .img over it. A black box ran through a load of text. I still get the message Can't read maps when turning on the GPS again.

What am I doing wrong and how can I get the Oregon to read the map on the SD card?

Any assistance gratefully received.