GCD based upgrades
Some software releases below are linked directly to a GCD file for that
release. GCD files are also available through Garmin's web site using a URL
of the form: http://www8.garmin.com/software/Oregon_WebUpdater__xyz.gcd where xyz is the three digit version number. For example, for version 2.6 xyz would equal 260.
Each Software Version below is linked to that version's gcd file. Normally I
would recommend upgrading through Webupdater but if for some reason you can
't (e.g. you are trying to downgrade) then you can update using the
following procedure:
Use the links below under "Software Version" to download the gcd file
for the version you want to use
Change the name of the file you just download to gupdate.gcd
Attach the Oregon to your computer and verify that it is in USB Mass
storage mode
Copy gupdate.gcd to [OR drive]:\Garmin\gupdate.gcd
Restart the Oregon