The conventional naming in Garmin folder is 'gmapsupp.img' not 'mapsupp.img' but because, as i've surmised previously [Only registered and activated users can see links. ], <any_name>.img is recognised in SD's Garmin folder as it is in Map folder for your 2689 so that shouldn't be a problem. To be sure, change the name to gmapsupp.img and check the other stuff i posted in that linked post.
Does the EUU map now appear in your unit's 'myMaps' info? If it doesn't, please post the GMapTool log from 'Info' or 'Details' tab. Do you have any other map img on the unit/sd which might be locked and causing the message?
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