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New to this forum but here goes.  I have a Rino 530hcx that I am trying to get the idaho topo maps loaded unto.  I have a MAC ibook g4 laptop that I am using to upload the maps to the unit.  I have followed the instructions for doing that, that are shown on the GPS File Depot site.  It is telling me that the maps have been installed successfully but I can't get them to display on the Rino.  I have an 8gb sd card installed in the Rino.  Anyone on this forum that would be so kind as to give me some pointers would be greatly appreciated.