Google App Store Warning - You should upgrade to Apache Cordova 3.5.1 or higher as soon as possible - apache

Question

I have received an Email from Google Play Store for my Android App:
This is a notification that your com.mydomain.myapp, is built on a
version of Apache Cordova that contains security vulnerabilities. This
includes a high severity cross-application scripting (XAS)
vulnerability. Under certain circumstances, vulnerable apps could be
remotely exploited to steal sensitive information, such as user login
credentials. You should upgrade to Apache Cordova 3.5.1 or higher as
soon as possible. For more information about the vulnerabilities, and
for guidance on upgrading Apache Cordova, please see
http://cordova.apache.org/announcements/2014/08/04/android-351.html.
Please note, applications with vulnerabilities that expose users to
risk of compromise may be considered “dangerous products” and subject
to removal from Google Play. Regards, Google Play Team ©2014 Google
Inc. 1600 Amphitheatre Parkway Mountain View, CA 94043
If I try the command mentioned on the given link/page, i.e.:
cordova platform add android#3.5.1 --usenpm
I get an error:
Platform android already added
How can I upgrade Cordova from 3.1 to 3.5.1? I have tried all sort of things like:
npm update -g cordova
But I do not appear to be getting successful. The version file in MyApp\platforms\android\cordova folder still shows following entry and no file in this folder changes:
// Coho updates this line:
var VERSION = "3.1.0";
console.log(VERSION);

Answer 1

After some research, I think, I have found the solution here:
http://cordova.apache.org/index.html#download
npm install -g cordova
cd my_project
cordova platform update android
Running the last command does the trick and I get this response:
**cordova platform update android**
Deleting E:/PhoneGap/my_project/platforms/android/libs/cordova-3.1.0.jar
Android project is now at version 3.6.3
If you updated from a pre-3.2.0 version and use an IDE, we now require that you
import the "CordovaLib" library project.
Hope that helps.
Regards

Answer 2

If you are using Phonegap, you just need to update Phonegap to version 3.5.0
It's explained here:
http://phonegap.com/blog/2014/06/12/phonegap-3_5_release/
And here's the note from Phonegap that says how you're covered: http://phonegap.com/blog/2014/08/07/cordova-android-3_5_0-patched-with-security-fixes/