How do I create an upgrade?
There are three types of upgrades that can be created with the Windows Installer technology: a Major Upgrade, a Minor Upgrade, and a Small Update. A Major Upgrade is used to make a large change that warrants a full version upgrade. A Minor Upgrade is a minor version change such as adding a few new files and/or making many small corrections. A Small Update is used when you make a few minute changes that do not warrant a version change.
Below are the steps for creating a Major Upgrade using the Upgrade page in the Installation Expert area. The Minor Upgrade and Small Update upgrades are created using the Patch Wizard tool.
Required Modifications for a Major Upgrade
Component IDs: Same as previous version
Upgrade Code: Same as previous version
Package Code: Changed from previous version
Product Code: Changed from previous version
Version Number: Changed from previous version
Steps in creating a Major Upgrade:
To fill out the Upgrades page:
When an Upgrade is completed correctly, you will see only one entry in the Add or Remove Programs applet in Control Panel. The Upgrade will update old files to the most current version, as well as install the entire application if it is not already present on the machine.