Working with Differential and Full Releases
InstallShield 2025
Project:
InstallShield provides two different mechanisms for creating upgrades for InstallScript installations:
| • | You can package your upgrade as a full release that updates an existing product if an earlier version is installed, or behaves as a first-time installation if no earlier version is present. |
| • | You can package your upgrade as a differential release that contains only the changed data (byte-level file differences) between the versions to be updated. |
For step-by-step instructions on how to update an InstallScript installation by either creating a differential or full release, consult this section of the help.