Learning how to upgrade from Joomla 1.5 to 3.0 is tricky because Joomla 1.5 does not contain the upgrade framework that later versions have.

With Joomla 1.6 we saw the introduction of a one click upgrade feature that made updating and upgrading Joomla so much easier. Currently, this upgrade framework only applies to the core Joomla platform and only a few well known extensions, such as JCE, Akeeba Backup and Admin Tools.

Overview of Joomla Versions
Version End of Life Last secure version Migration One Click Upgrade
Joomla 1.0 July 2009 Joomla 1.0.13 Yes No
Joomla 1.5 April 2012 Joomla 1.5.26 yes No
Joomla 1.6 August 2011 No Yes
Joomla 1.7 February 2012 No Yes
Joomla 2.5 2014 Joomla 2.59 No Yes
Joomla 3.0 2014 + No Yes

 

How to upgrade from Joomla 1.5 to 3.0

Joomla 1.5 users must MIGRATE directly to Joomla 2.59 or Joomla 3.0. (Joomla 1.6 and 1.7 were only short term releases).

For details on how to do this read: Migrating from Joomla 1.5 to Joomla_2.5

How to Upgrade from Joomla 1.6 or 1.7 to 2.5 or 3.0

For Joomla 1.6 or 1.7 users, upgrading to Joomla 2.59 is straight forward using the one click upgrade admin tool.

Check the Technical Requirements for Joomla to ensure your server meets the new requirements.

Check also that your template, components, modules and plugins will be compatible with the version you are moving to.

 

How to Upgrade Joomla 1.0 to 2.5 or 3.0

Joomla 1.0 users must first MIGRATE to the last secure version of Joomla 1.5. The second step, is to MIGRATE from Joomla 1.5 to Joomla 2.59 /or Joomla 3.0.

Check the Technical Requirements for Joomla to ensure your server meets the new requirements. Also check that your template, components, modules and plugins will be compatible with the version you are moving to.

For details on how upgrade read: Migrating from 1.0.x to 1.5 Stable

Important Links to Tools and How tos

There are many factors when considering how to upgrade from Joomla 1.5 to 3.0. Here are some links with some useful information:
Migrating from Joomla 1.5 to Joomla 2.5
jUpgrade – Migration Tool
SP Upgrade -Migration Tool
Check the Technical Requirements for Joomla
Joomla update patches and full packages
Back up Back Back Up

Talk to Good Web Solutions about how to upgrade from Joomla 1.5 to 3.0

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