GPSMAP 60CSx is always in preboot-like mode, there is option in 60csx menu to go to USB mode, otherwise it is always visible for updater (and Mapsurce too)
9.Connect your GPS to your computer using a GARMIN PC Interface cable to an open USB port. Turn the GPS on.
10.If your computer asks for a driver, please see the software and installation instructions that came with your device, or download and install the USB driver from Garmin's website.
11.Open the C:\Garmin folder (or other folder where you un-zipped the files), locate the file named 'Updater' and double click on it.
12.You should see the name of your GPS device next to the 'USB Device' option on the Updater program window. Select the 'USB Device' option, then click on 'OK' on the Updater program window to start the data transfer.
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