DSM 7.0 Preview is now available for immediate download. But before you start, please familiarize yourself with how to prepare, how to install, and how to contribute to this upgrade!
DSM upgrades are irreversible. While updates do not affect your stored data, you should still perform a backup if you haven’t done so already. For detailed instructions on backing up your data, please refer to this article. Please note that the preview version is a work-in-progress that may require further polishing to address minor issues.
Use Hyper Backup to back up data, system settings,