If I'm reading the .XML file correctly, the Pnx file is for preprogrammed phone number lookup:
</File></DataType><DataType><Name>PreProgrammedPhoneNumberLookup</Name><File><Specification><Identifier>PNX</Identifier></Specification><Location><Path>Garmin/Pnx/</Path><FileExtension>pnx</FileExtension></Location><TransferDirection>InputOutput</TransferDirection></File></DataType><UpdateFile><PartNumber>006-F0057-
This method worked great on a DNX6990HD. I had a working sd card with the latest maps and files running in the sd slot. I was able to rename GMA and UNL files to gmapsupp, put card in a USB adaptor and load to internal in unit through the USB cord by hitting the update map button. Thanks for the info. Hope this shortcut helps.
Bookmarks