Typo3 is providing a very nice upgrade documentation. We want to upgrade a Typo3 4.5 LTS (or greater) to Typo3 7.2 LTS within major steps. Basically we need to carry out three steps.
Upgrade from 4.5 (or greater) to 6.2
- Backup your sourcefiles and Database!
- We need to deactivate all custom extensions to proceed a clean upgrade.
- Following further instructions of preparing your Typo3 4.x
- carry out all upgrade instructions (Ignore
typo3_src
symlink upgrade!). - Download the latest Version of 6.2
- Archive your current
index.php
andtypo3/
- Extract
index.php
andtypo3/
from 6.2 archive into your current version. - Execute installtool and proceed all steps
<your_url>/typo3/sysext/install/Start/Install.php
- Setup a locale as
en_US.UTF8
- You should now have a clean 6.2 Version.
Upgrade from 6.2 to 7.6
- Backup your sourcefiles and Database (again)!
- Download the latest Version of 7.6
- Archive your current
index.php
andtypo3/
- Extract
index.php
,vendor/
andtypo3/
folder from 7.6 archive into your current version. - Execute installtool and proceed all steps
<your_url>/typo3/sysext/install/Start/Install.php
- You should now have a clean 7.6 Version.
Conclusion
Typo3 dev team does a heck of a job. The upgrade process was really easy in a minimum of time.