GPSBabel: convert, upload, download data from GPS and Map programs
Gpsbabel seems to work more reliably converting from Lowrance GPX or Lowrance version 2 ...
After the format is converted to Humminbird (hwr) ...
*Create a folder on the SD Card labeled “MATRIX” (without the quotation marks) ...
*Copy and paste the hwr file converted in gpsbabel into this MATRIX folder ...
The Humminbird should now recognize the data and prompt to upload the Nav data ...
Rickie