Change Vs2010 Extension Version , To Vs2012 Version 

Change Extension Version , With This Extension

This Application Just ChangeVersion Of Extension , And Don't Change Anything On Extension(Package)

You Can Install Vs2010 Extension On Vs2012

For Use This You Must Have .Net 4.5 Framwork

New : Change Version Vsix 2013 Released

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If You Want Install Vs2010 Extension On Vs2012 , You See This Error

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For Example , We Change Version of  ToDoManager Extension (this Just Run On Vs 2010)

After Install This Extension On Tools Menu You Can Find "Extension Convertor (Saha)"

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After Click You See This Window

Click 'Open VSIX' And Choose Vsix Package

thene Click 'Save Folder' To Save New Vsix File

(File Name Automaticly Select , Just Select Path)

and Click 'Change Version' To Change Vsix Version 

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Now Go To Selected Folder And You Can see New Vsix File

(File Name Started With "Changed_")

In Below Image You Can See ToDoManager Package Ready To Install

ToDo Manager Installed On Vs2012

version 1.1 Change Log

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1 . Some Problem Fixed

2 . Change Version Faster