Updating Apache Cordova to the latest version only takes a few minutes. Below are the steps (taken from Cordova) needed to update your > 3.0 projects to the latest version (3.5 as of this post).

In a command / terminal run:

1. npm install -g cordova

2. Now go to into your project (ie: c:\projects\test)  and run:

3. cordova platform update android (or ios)

You can update your plugins by removing / adding them again like:

cordova plugin rm org.apache.cordova.file
cordova plugin add org.apache.cordova.file

That’s it. Now you should have an up to date environment.