To prevent Firefox from automatically updating itself after you install an older version, you'll need to change your Firefox update settings: Click the menu button and choose Options. Important: By default, Firefox is set for automatic updates. Such software may not be essential for your security, but if outdated, it may interfere with the use of Firefox, or cause Firefox to crash.I still want to downgrade - where can I get the previous version?Although Mozilla has a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. Some security software will need to be upgraded to a new version for each Firefox version update.Optional software bundled with security software may also need updating.

Ensure all security and security related software is fully updated. This article gives you some alternatives to downgrading and links to old versions of Firefox if you do choose to downgrade. That usually doesn't solve the problem and will make your computer and personal information vulnerable to attack. If you must use an older version of Firefox, please a separate for the older version, to minimize data loss.Often when there is a problem with a Firefox update, people look for a way to go back to the previous version. We advise against downgrading so please do so at your own risk. Warning: Downgrading to an older version can cause loss of Firefox user data, as well as performance and security issues. Testi B Autoshkolla Download Firefox 2017.

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