How to upgrade to MDT 2008 Update 1: Lite Touch
We've received a number of questions over the past few days on the best way to upgrade from MDT 2008 to MDT 2008 Update 1 without losing any settings. The most common problem that has been seen is that the Deployment Points are no longer present after installing MDT 2008 Update 1. The following instructions will allow you to upgrade and maintain all of your existing settings:
1. Before installing MDT 2008 Update make a backup of the Deploy.XML file. The file is located by default in C:\Program Files\Microsoft Deployment Toolkit\Control
2. Install the MDT 2008 Update 1 MSI
3. Launch the Deployment Workbench and right click on Distribution Share and choose Create distribution share directory
4. A wizard will then be presented. Choose Upgrade an existing distribution share and type or browse to the path of your existing distribution share. Check the check box to Backup existing scripts and configuration files and click on Finish (the files will be backed up to the Distribution\Backup folder)
5. Close the Deployment Workbench and restore the Deploy.xml that was backed up earler to C:\Program Files\Microsoft Deployment Toolkit\Control, overwriting the existing file
6. Launch the Deployment Workbench, navigate to the Deployment Points and your Deployment Points should now be visible.
7. Right click on each Deployment Point and choose Update. This will update all of the Windows PE images with the correct version of the scripts

8. If you are using WDS, you will now need to replace your boot image in WDS with the updated Lite Touch WIM file