More of a reminder than something not already known, today i updated Firefox to version 84 and noticed the following in the "What's new" article...
Quote:
End of support for Adobe Flash
Firefox will end support for Adobe Flash in Firefox at the end of 2020, as announced back in 2017. Adobe and other browsers will also end support for Flash in January and we are working together to ensure a smooth transition for all.
Firefox version 84 will be the final version to support Flash. Firefox version 85 (release date: January 26, 2021) will ship without Flash support, improving our performance and security. There will be no setting to re-enable Flash support.
Will switching to a different browser allow me to use Flash?
No. Adobe and other browsers will also end support Flash at the end of 2020.
Even if you install an older version of Firefox, the Flash plugin itself will stop loading Flash content after January 12, 2021. See Adobe’s Flash Player End of Life information page for more details.
What if I still depend on Flash content?
For enterprise customers who need help transitioning Flash content to other supported technologies or require Flash Player licensing support after 2020, please contact Adobe’s official distribution licensing partner, HARMAN, for more information about their commercial support offerings.
Source:
https://support.mozilla.org/en-US/kb/end-support-adobe-flash