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Old 09-27-2011, 05:30 PM   #1
jotunheim OP
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Joined: Aug 2010
Location: SE Wisconsin
Oddometer: 10
BMW Navigator IV - Cannot Authenticate Maps Message

Just in case anyone else had a mild annoyance by the "Cannot Authenticate Maps" on their BMW Navigator IV for the past several months, Garmin tech support responded with a one line message:

Delete the gmapsupp file from the unit. Please let me know if you have
any other questions.

Works! The error is now gone and there is only the most recent map set (2012.20) on the unit. The unit always was functional before, but as stated above, would always have the annoying message before moving on to the main screen.

2010 R1200 GSA 30th Anniversary Edition
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Old 09-28-2011, 04:34 AM   #2
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Joined: Jan 2008
Location: 1/6 Adirondacks, 5/6 Asheville, NC
Oddometer: 160
Thanks -- I'll give it a try this morning.
Its so hard to forget pain, but its even harder to remember sweetness. We have no scar to show for happiness. We learn so little from peace.
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Old 10-03-2011, 09:41 PM   #3
Joined: Oct 2011
Location: Mizzouri with St. Robert
Oddometer: 1
Cool2 Worked for me!

Thanks for the tip and it works!
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Old 02-01-2013, 02:47 PM   #4
Joined: Oct 2009
Oddometer: 2
Thank you

thank you for posting this fix. It worked for me too
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Old 10-10-2013, 11:50 PM   #5
Joined: Apr 2012
Location: Central Coast, NSW, Australia
Oddometer: 45
ok, so I have three different GMAPSUPP files. IMG, GMA and UNL extensions. I take it I don't delete the IMG file, but which of the others do I delete?
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