This is not an upgrade, it’s a fork of the og filebrowser, it’s a different software.
Filebrowser will be archived on 1st of september, see https://hacdias.com/2026/07/28/filebrowser/
Uhh, that is sad. Security advisories created with AI help is what brought it down. I can feel that with motionEye, where lots of advisories, often duplicates or existing (unpublished) ones, are opened, and we do not have enough time to address them quickly. Not particularly a bad thing to be informed about vulnerabilities, but it simply creates a workload and pressure, that can be demotivating.
FileBrowser Quantum seems a solid drop-in replacement. There is a migration guide: Configuration Migration | FileBrowser Quantum Documentation
So looks like CLI flags (the database path in particular) have been moved into a YAML config file. So that replaces CLI flags (other then the YAML file path) and the content of the previous config.json. However, sadly there seems to be no automatic import/conversion method of the JSON. I hope yq can be used to convert it, then add the database path, and done.