ApplicationUpdaterUI worked in 1.5 not Air 2.7

I have followed below steps to make my project workable, but still I am facing below issue:- Steps followed

1. Update your project to build with the Flex 3.5a SDK http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+3

2. Overlay the AIR 2 SDK over your existing Flex SDK See this article: http://kb2.adobe.com/cps/495/cpsid_49532.html

3. Copy only the applicationupdater_ui.swc from the AIR 2 SDK over the one inside the Flex SDK.

   • The applicationupdater_ui.swc can be found in /frameworks/libs/air/applicationupdater_ui.swc
   • Get the AIR 2 SDK from here http://www.adobe.com/cfusion/entitlement/index.cfm?e=airsdk
   • Copy the applicationupdater_ui.swc from the AIR 2 SDK over the one inside the Flex SDK

4. Remove the reference to the Flex SDK applicationupdater_ui.swc from the Flex project and add a new swc reference to the one in the AIR 2 SDK (this swc can be copied in a 'libs' folder directly into your project).

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Is there any setting changes need to be done or any work around for the solution?

Environment: - Flex 3.0, SDK 3.5 and AIR SDK 2.7

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The update XML changed in AIR 2.5. This knowledge base article explains how to update your application to handle it.