What exactly did you update?
From what you wrote there are multiple possibilities: Your project? Your Ionic installation? Your Ionic CLI installation? …
can confirm - also not working for me… updated ionic2 as well to latest build (following your blog guide) and live reload is not working anymore, for both, the regular ionic serve and ionic serve --lab
When I save code changes, the browser automatically refreshes, but code changes are not reflected. I need to stop my CLI and run ionic serve again in order to have any code changes reflected in the browser.
Your system information:
Cordova CLI: 6.4.0
Ionic Framework Version: 2.3.0
Ionic CLI Version: 2.1.18
Ionic App Lib Version: 2.1.9
Ionic App Scripts Version: 1.1.4
ios-deploy version: Not installed
ios-sim version: Not installed
OS: macOS Sierra
Node Version: v6.9.4
Xcode version: Xcode 8.2.1 Build version 8C1002