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How to Upgrade from Windows 8.1 Preview to RTM – Guide

  1. #1

    How to Upgrade from Windows 8.1 Preview to RTM – Guide


    Windows 8.1 RTM is already available for download, so many users have actually decided to deploy it right away, even though the public launch will only take place in October.

    Basically, the existing builds that are now published on file-sharing websites should provide an experience that’s very close to the one of the stable build coming out in October, as Microsoft has promised to roll out a new pack of updates just before the official release.

    One of the problems users encountered with these leaked ISO is the fact that they require a clean install, so everybody would lose all settings and apps.

    The good news is that upgrading from Windows 8.1 Preview to RTM is actually possible, even though you install the stable version of the operating system from a stand-alone ISO.

    It all comes down to just a few steps detailed on the MDL forums and which would require users to edit the cversion.ini file included in every single Windows 8.1 ISO.

    So let’s start with the first step.
    How to Upgrade from Windows 8.1 Preview to RTM

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  2. #2


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    The Windows 8.1 RTM leak, will not upgrade a OEM manufacturer's PC, which has been upgrade to Windows 8.1 Preview.
      My System SpecsSystem Spec

  3. #3


    Posts : 5,360
    7/8/ubuntu/Linux Deepin


    Might as well use Kai liu's little program: cversion.ini_removal_utility.zip
      My System SpecsSystem Spec

  4. #4


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Just done a RESET back to Windows 8, no upgrade path with Cversion deleted.

    Click image for larger version
      My System SpecsSystem Spec

  5. #5


    Posts : 87
    Windows 8.1 Pro 64 Bit


    How long can I use the Windows 8.1 free ?
    Thank's
      My System SpecsSystem Spec

  6. #6


    Quote Originally Posted by asus View Post
    How long can I use the Windows 8.1 free ?
    Thank's
    Until 14th January 2014.
      My System SpecsSystem Spec

  7. #7


    Posts : 142
    Win 7 Pro x64


    I just did a clean install instead. Much easier with no headaches.
      My System SpecsSystem Spec

  8. #8


    Quote Originally Posted by theog View Post
    The Windows 8.1 RTM leak, will not upgrade a OEM manufacturer's PC, which has been upgrade to Windows 8.1 Preview.

    I have a Surface Pro tablet that came with Windows 8 and I have the 8.1 preview on it. So are you telling me that if I do this upgrade to Windows 8.1 RTM that I will be messing up?
      My System SpecsSystem Spec

  9. #9


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by Mickeylittle View Post
    Quote Originally Posted by theog View Post
    The Windows 8.1 RTM leak, will not upgrade a OEM manufacturer's PC, which has been upgrade to Windows 8.1 Preview.

    I have a Surface Pro tablet that came with Windows 8 and I have the 8.1 preview on it. So are you telling me that if I do this upgrade to Windows 8.1 RTM that I will be messing up?
    You need a Windows 8.1 Product key, or Reset back to Windows 8 & update from the MS store from 18 October.
      My System SpecsSystem Spec

  10. #10


    Posts : 19
    windows 8.1 preview


    I tried almost five times, all failed to upload. The way is not working for me, a little sad.
      My System SpecsSystem Spec

How to Upgrade from Windows 8.1 Preview to RTM – Guide
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