+gnbrotz Posted December 27, 2020 Share Posted December 27, 2020 I've recently dug out my eTrex "original" Legend, that uses a serial interface. I have a USB to serial cord that I've used numerous times in the past, but today I'm unable to send/receive data. I started by attempting to use ExpertGPS (my preferred tool), but current versions no longer support serial gps units. I've also tried Garmin Express, an old version of EasyGPS that *should* work with serial connections and the current version of GPSBabel. The computer chimes when I connect, and the cord will power the unit with no batteries, but ExpertGPS tells me "the serial port could not be opened" and GPSBabel tells me "A device which does not exist was specified. GARMIN:Can't init COM9." Other than a mouse, there are no other USB devices connected or used that would be holding the port captive and I have confirmed that the handheld is set to "Garmin" data protocol. Quote Link to comment
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