INSTALL ONLY OFFICIALLY RELEASED BUILDS FROM MICROSOFT. It will always be tempting to get the build with the “mod†already done but you really never know what else has been done to the build. There’s a thrill in getting the latest, we know, but that also comes with risks that can’t even be quantified. For the RC we will work to release a hash or some other way to validate the build, but the best way is to always download directly from Microsoft.
Here’s what you can do to bypass the check for pre-release upgrade IF YOU REALLY REALLY NEED TO:
1. Download the ISO as you did previously and burn the ISO to a DVD.
2. Copy the whole image to a storage location you wish to run the upgrade from (a bootable flash drive or a directory on any partition on the machine running the pre-release build).
3. Browse to the sources directory.
4. Open the file cversion.ini in a text editor like Notepad.
5. Modify the MinClient build number to a value lower than the down-level build. For example, change 7100 to 7000 (pictured below).
6. Save the file in place with the same name.
7. Run setup like you would normally from this modified copy of the image and the version check will be bypassed.
