Mozilla | Firefox
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Go to --> Tools --> Options --> Advanced Tab --> then in lower tabs section in here look for the UPDATE tab and choose one of the second choices, Take it off the first choice! I recomend the last choice but you need to install newer versions manually when you know they are safe!
http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/
Install an older version of Firefox (INFO)
https://support.mozilla.org/en-US/kb/install-older-version-of-firefox
Often when there is a problem with a Firefox update, people look for a way to go back to the previous version. That usually doesn't solve the problem and will make your computer and information vulnerable to attack. This article gives you some alternatives to downgrading and links to old versions of Firefox if you do choose to downgrade.
Installing a previous version doesn't fix most problems
Problems with an update are generally not caused by the new version of Firefox, but rather the update process. Installing a previous version will not help in most cases. Instead, see:
How to fix the Update Failed error message when updating Firefox
Fix problems connecting to websites after updating Firefox
Firefox hot topics
Common questions after updating to the new Firefox
Note: Other problems can be solved with the Reset Firefox feature. It restores Firefox to its factory default state while saving your essential information.
I still want to downgrade — where can I get the previous version?
Although Mozilla has a website with old versions of Firefox for testing purposes, it is not recommended that you use anything but the latest version.
Warning: Using old versions of Firefox poses a significant security risk.
Below is a an older version that works good but has security risks...
Firefox 27.0.1 (US English)
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