PhoneGap Desktop will automatically prompt you when a new version is available with the following dialog:
Click the green Update button and PhoneGap Desktop will begin downloading the latest version. When the download is complete you will see the following dialog:
Click the green Restart button to restart PhoneGap Desktop with the latest version.
Verify the Update
You can verify the update by clicking on the question mark button and selecting About:
You should see that the version number shown in parentheses below now reflects the latest update.Edit this page on GitHub