> For the complete documentation index, see [llms.txt](https://docs.duplicati.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.duplicati.com/installation-details.md).

# Installation details

- [Release channels and versions](https://docs.duplicati.com/installation-details/release-channels-and-versions.md): This page describes the different channels and how releases are used.
- [Upgrading and downgrading](https://docs.duplicati.com/installation-details/release-channels-and-versions/upgrading-and-downgrading.md): This page describes how to downgrade Duplicati from a newer version to an older version
- [Downgrade from 2.1.0.5 to 2.0.8.1](https://docs.duplicati.com/installation-details/release-channels-and-versions/downgrade-from-2.1.0.2-to-2.0.8.1.md): This page describes how to downgrade from Duplicati 2.1.0.5 to 2.0.8.1
- [Downgrade from 2.2 to 2.1.05](https://docs.duplicati.com/installation-details/release-channels-and-versions/downgrade-from-2.2-to-2.1.05.md): This page describes how to downgrade from Duplicati 2.1.0.5 to 2.0.8.1
- [Package options](https://docs.duplicati.com/installation-details/package-options.md): This page describes the different packages offered by Duplicati
- [Developer](https://docs.duplicati.com/installation-details/developer.md): Instructions to build from source


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