I just a boat that has a 2005 Lowrance LCX-15MT sonar. I called Lowrance today and they said that I need the old parallel port card adaptor in order to update the unit from version 2.2 to version 2.5. Once the unit is updated to 2.5 all of the other updates to version 3.6 can be done via a USB connected card reader.
Does anyone still have one of the parallel port card readers??
Thanks!
Andy