You can copy an img in Map folder, in your device you can rename it as anyname.img-
Preloaded maps (CN Middle East NT 2010.20)are in system folder, to see it you must enable hidden folders in folder options in Windows-
Deselect autorouting maps covering the same area, rename the map update in the same way of your old map (gmapprom.img), but before doing anything, backup it on your pc-
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