What Is ESR Update Channel Firefox?

Does Firefox automatically update ESR?

Yes, an ESR will be automatically upgraded to the subsequent ESR. System administrators can disable automatic updates by managing ESR through their deployment system. From a major version to the other (example: the 52 to 60 migration), the updates will be proposed only after the X. 2.0 version is released.

ESR automatic update - URGENT | Firefox for Enterprise Support Forum

Should I use Firefox ESR?

For end users, it's not necessary to stick with Firefox ESR. Like Mozilla's site says, it's geared towards large organizations. If your distro comes with Firefox ESR by default and it doesn't make much difference to you, then you can leave that version installed.

Firefox vs Firefox ESR on Linux - Linux Tutorials - LinuxConfig.org

What is the Firefox ESR update channel?

Extended Support Release (ESR): receives major updates on average every 42 weeks with minor updates such as crash fixes, security fixes and policy updates as needed, but at least every four weeks.

Choosing a Firefox update channel - Mozilla Support