![]() It came with an installation disk for the software. Garmin does not send USB out of that four pin socket so why make a cable that stuffs it up a USB? The only thing in my cable is a wee black rectangular bit about 30mm by 20mm (and I haven't a clue what's inside it). There would be NO SENSE in making a cable that goes from the Garmin plug to the USB unless it was designed to be a converter. ![]() The converter is not some massive lump of hardware. If this doesn't get you going, tell me what navigation software you are using and I might be able to help. Instrument will select these speeds, software may need to be set manually. Speed set to 4800 for NMEA or 9600 for Garmin. Make sure software and instrument are set to the same.ģ. On the 72 set it in the "settings>interfaces menu". Set the COM port in your nav software to the right number.Ģ. The COM port number - most nav software will help you with this, but look at devices from the control panel to see the number of "prolific USB to serial". What navigation software are you using?ġ. I have exactly the same setup as you, and can make it work. If you haven't got that installed you need to do so. It requires the correct software to be installed, but I'm guessing that is what you mean by "driver". It sounds like you have a USB to serial adaptor. (NB Garmin 72H does send USB - but it has a separate USB socket.) Thanks for that I appreciate the effort you have gone to to help us electronic numphtys.Click to expand.As has been pointed out, the Garmin 72 does not send USB it sends RS232. I have printed of this lot of instructions as my 12 yr old Navman is sure to crap itself sooner rather than later and GARMIN will be my choice of unit. img file as a Garmin drive and automatically load the more detailed G2 map when managing your marks. Home Port should automatically recognise the. img file still mounted (shows in the left window of finder) open up the HomePort application. ![]() img file named Garmin, open it then copy and paste the GMAPSUPP.IMG file into the Garmin folder. img file will make it come bold and it should show like an SD drive does in finder.ġ0. If it doesn't show up, it means it isn't "mounted" and double clicking on the. The new image file should show up in the list with the eject symbol to the right of it. Once complete close down Disk Utility and reopen Finder. Click on the size and go to custom and resize the image to the vicinity of 1.1GB.ĩ. Rename the Image something Like "Garmin G2 Australia and NZ" in Save As.Ħ. Once open up the top of the screen in the centre click "New Image".Ĥ. Go to Applications-Utilities- Disk Utility. img file is what we are working with (just under 1GB in size)ģ. ![]() Of course double check that the little locking slider on the side is unlocked before you go purchasing another SD card reader Insert Garmin G2 Card into your machine and open up the folder "Garmin" and copy the file named GMAPSUPP.IMG to a new folder on your desk top.Ģ: Remove G2 Card you won't need it for the rest of the map install as the above. *Note* If your SD card reader in your machine is showing "Read Only" on your SD card when you get info in Finder then you need to purchase a second SD card reader as the Mac's SD card reader is faulty. This is only for Mac and has worked for me. OK so i thought it best to do a quick write up in case others fall into the same trap because I think it's pretty important that if you are taking the time to plan trips and actively manage your marks then you have to be looking at the more accurate G2 chart not the built in world map that had no detail at all.
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