Version guide

Guide on how to upgrade and when from different LS versions.

Semantic versioning

Understading the semantic versioning of LimeSurvey might be a little bit tricky. First, to check all the past LimeSurvey versions, you may access the following [1] link.

The most important updates are described below:

The most important LimeSurvey releases

Old version (build)	New version (build)	How to upgrade	Other details
LimeSurvey 1	LimeSurvey 1.50	If you use LimeSurvey 1, you can update to LimeSurvey 1.44. Due to the structural changes that were implemented, the only way to get to LimeSurvey 1.50 is to do a clean installation of the software. For further details, check the following link.	If you wish use some old survey structure files with an *.sql extension, export them from the older version and then import the respective .sql file(s) into the new LimeSurvey version.
LimeSurvey 1.50	LimeSurvey 1.92	Read the following wiki section to find out how you can get to the latest 1.xx release.	Please note that the templates system was changed in 1.92. Check if your customised templates are still working. If not, please edit them accordingly.
	LimeSurvey 1.92	LimeSurvey 2.00	To correctly upgrade your installation from 1.92 to 2.00, upgrade from the latest 1.92 build: 120919. For further information, access the following link
LimeSurvey 2.00	LimeSurvey 2.06	If you wish to upgrade your installation from 2.00 to 2.06, you can either upgrade your installation manually or via ComfortUpdate
LimeSurvey 2.06	LimeSurvey 2.50 or LimeSurvey 2.06 LTS	If you wish to upgrade your installation from 2.06 to 2.50, you can either upgrade your installation manually or via ComfortUpdate	Please note that the template structure has changed with the update from 2.0x to 2.50 or later. Your old templates will not be working anymore as the template system uses now responsive templates.	Please note that 2.06 is the first LTS version provided by LimeSurvey. See the Version guide#LimeSurvey LTS wiki subsection below.
LimeSurvey 2.50	LimeSurvey 2.7x.x	If you wish to upgrade your installation from 2.50 to 2.7x.x, you can either upgrade your installation manually or via ComfortUpdate
LimeSurvey 2.6.0	LimeSurvey 2.7.3
				These releases 2.06 and 2.6 TODO TODO: Add pic of admin interface 2.73 TODO TODO: Add pic of admin interface 3.x With the release of LimeSurvey 3.x, the development and support from 2. TODO: Add pic of admin interface Templates and workarounds All three major versions use different template engines and templates will not be compatible between them. Templates are called "themes" in 3.x. Long-term support, LTS 3.x will be the only LTS version.