# Version Numbers

Each major release, upgrade or update is assigned a version number. A version number contains a unique set of numbers assigned to a specific software release for identification purposes. You can determine from the version number if its an initial release, update or upgrade.

The following terminology is used to define a version number:
Feko <Major>.<Minor>.<Patch>
for example:
Feko 2019.1.2
2019
Indicates the major release version. A major release is made available roughly once a year and has a minor and patch version of “0”.
Note:
• The update utility does not support upgrades between major versions.
• A major release requires a new installer.
1
Indicates the minor release version and is referred to as an upgrade. Large feature enhancements and bug fixes are included in the upgrade. Minor upgrades are released quarterly, for example “1” indicates the first minor upgrade after the initial release. Use the update utility to upgrade to a newer minor version (when available).
2
Indicates the patch version and is referred to as an update or “hot fix”. Minor feature enhancements and bug fixes are included in the update. Patch updates are released between minor upgrades, for example “2” indicates the second patch update after an upgrade.