How do you undo an update
Last update was great.
This last update is allowing pop ups, they can lock up your whole system.
This was not happening before update.
How do we undo updates?
Wšě wotmołwy (2)
https://support.mozilla.org/en-US/kb/install-older-version-of-firefox?cache=no
previous releases are available at https://ftp.mozilla.org/pub/firefox/releases/
Wot bygabyga změnjeny
You may have ad/mal-ware. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no
Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.
Go to the Mozilla Add-ons Web Page {web Link} (There’s a lot of good stuff here) and search for a good ad / pop-up blocker.