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@diversola
In the .System folder you have gmapprom.img and gmapprom.unl but there's no gmapprom.gma file present, also both gmap3d.unl and gmap3d.gma are there but the actual 3D buildings map gmap3D.img is missing. In the Map folder, ALL the GMA & UML files present are for earlier detail map versions - none match the current map D6159350A.img.
It should be an EU Lifetime Maps (LM) device. First back everything up. Remove the entire contents of the Map folder, and from the .System folder remove only gmapprom.img, gmapprom.unl, gmap3d.unl and gmap3d.gma. Safely disconnect it from computer and reboot it to recreate and update the GarminDevice.xml, then GarminExpress should offer the current detail maps along with their appropriate GMA and UNL files.
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13th May 2026, 10:12 AM #6Garmin/GPS Systems GMod.
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