Likes: 
Hi I also ran into same issue today with my newer unit I bought.
I upgraded to latest version V4.30 and now my custom maps no longer work on the Unit and I can't find the older firmware available onlineanything before v4.10 if someone can help will be appreciated.
Thank you
PartNumber>006-B1096-00</PartNumber>
<SoftwareVersion>430</SoftwareVersion>
<Description>GPSmap 720</Description>
</Model>
<Id>38632249xx</Id>
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23rd July 2015, 08:15 PM #21Junior Member
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Firmware downgrade for 720 to recognize custom maps
Last edited by willie; 24th July 2015 at 07:42 AM.
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