Updates are modifications to the software product that are generally offered and expressly designated by Shasta Industries at its sole discretion. This is a software program that adds an additional feature to a particular software title (ShastaCAD).

An Update is not a complete program by itself; it requires the user to have a version of ShastaCAD already on their system. Some software updates may be unique to version releases.

Upgrade Versions are particular software titles that require a previous version to be installed. Upgrade versions allow the user to install a new version of a software title without having to pay the full price. An upgrade cannot be installed as a complete program by itself; it requires the user to have a previous version of ShastaCAD already on their system. In some cases upgrades will only work with specific versions of ShastaCAD.

Software Patches are software programs that correct a problem with a particular software title (ShastaCAD). A patch is not a complete program by itself; it requires users to have a version of ShastaCAD already on their system. Some patches may be unique to version releases. Software Patches are free to ShastaCAD licensees.