I recently ran the command:
cordova platform update iOS
Into my ionic framework projet, I got the result:
iOS project is now at version 3.7.0
However the following command
cordova -v
gives me
4.2.0
Why is my project not updated to 4.2.0 ? Is there something preventing to upgrade from the 3.x to 4.x ?
Have you checked this?
http://ionicframework.com/docs/ionic-cli-faq/#cordova-updates
Also, to update ionic itself, use ionic on your project directory. It will show when things are outdated. Update Ionic first, then cordova, then any other dependencies like platforms or ions.
Also be sure your node and npm are up to date.
UPDATE:
One more thing to keep in mind: be sure to install node, npm and ionic globally.
It seems the cordova version is not the same as the platform one:
For instance, the current 4.0.0 version will install iOS 3.6.3, android 3.6.4, browser 3.6.0, firefox os 3.6.3 etc
Here is a link to read more about it