## Chapter 3. Upgrading from previous installation

Table of Contents

3.1. General upgrade concept
3.2. Upgrading from 2.x
3.3. Upgrading from 3.0.0 to 3.0.1
3.4. Upgrading from 3.0.1 to 3.1
3.5. Upgrading from 3.1.0 to 3.1.2
3.6. Upgrading from 3.1.2 to 3.1.3
3.7. Upgrading from 3.1.3 to 3.1.4
3.8. Upgrading from 3.1.4 to 3.2.0
  3.8.1. Conversion of the existing Filesystem
  3.8.2. Converting and Altering of the database
3.9. Upgrading from 3.2.0 to 3.2.1
3.10. Upgrading from 3.2.1 to 4.0.0
3.11. Upgrading from 4.0.0 to 4.0.1
3.12. Upgrading from 4.0.1 to 4.0.2
3.13. Upgrading from 4.0.2 to 4.1.1
3.14. Upgrading from 4.1.1 to 4.1.4
3.15. Upgrading from 4.1.4 to 5.0.x
3.16. Upgrading from 5.0.x to 5.1.x
  3.16.1. Conversion of wiki's

See the first section to understand the general upgrading approach. Then consult the following sections that applies to your setup.