I recently posted about Building AIR 2 applications with Flash Builder 4.

There is now an update for Flash Builder 4 which downloads and installs the Adobe Flex 4.1 SDK. According to Renaun Erickson’s post, Flex 4.1 includes Flash Player 10.1 and AIR 2.0.

Now, if you’re like me and loathe the Adobe Updater… then you probably turned off the Adobe Updater notifications.

So here’s how to update Flash Builder to version 4.0.1 which includes the 4.1 SDK.

Go to Help > Search for Flash Builder Updates…

Help - Search for Flash Builder Updates...

This will launch the Adobe Application Manager and then proceed to update your software, including Flash Builder 4.

== UPDATE ==

If you don’t see a Flash Builder update available in Adobe Application Manager, you can download the standalone updater from Adobe.

Update Progress

Update Complete

Once the update is completed you can see Flash Builder is now at version 4.0.1.

Flash Builder 4.0.1 about screen

And you now have the option for Flex 4.1 as an installed Flex SDK. You can use Flex 4.1 to develop against Flash Player 10.1 and Adobe AIR 2.0.

4.1 is now avaliable