Please could you advise if this Garmin BlueChart XPC415S will work with my Garmin GPSMAP 420S. GPS comes up with message not compatible.
What Australia East cost map will work?
The GPSMAP 420S will only work with g2 maps in Australia. I tried all and then was advised by Garmin.
I have found out that the GPSMAP 420S will only work with g2 maps. (3D maps) So VPS415S for my area in Australia
Any bluechart that has been preloaded on an SD card should work. Did you purchase your chip with the data preloaded or did you download it yourself? If you downloaded it yourself, try erasing the sd card, format it, then insert the blank card in the 420 and power it up. This somehow preps the chip for the data download. Then download the bluechart onto the chip and try again. There is some ambiguous wording in the download screen that makes it look like some kind of error, try the download anyway and most of the time it will work. After the download is complete it should list the bluechart software version on the screen along with some other software info. If the operating system software is not v2.5 or higher, you may need to download a software update first.
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The GPSMAP 420S will only work with g2 maps in Australia. This I have tried and works. All standard maps will not work.
The method suggested by Garmin wesite to upgrade software version to 5.50 is not working. I am using a 420s with version 2.20 and trying with a 4GB SD card.
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