How to update Flash in Firefox

To find out if the currently installed version is the latest version, please visit the Plugin check page http://www.mozilla.com/plugincheck/, if the page tells you that the Flash plugin needs to be updated, install the latest version manually.

Use Firefox to access Adobe website installation, url http://get.adobe.com/cn/flashplayer/. Then follow the instructions on the official website.

I hope my answer is helpful to you, if you have any questions, please continue to consult on this platform.
For more tips on using Firefox, go to the Firefox community: http://mozilla.com.cn/topic/1/

How to update Flash in Firefox