Hi guys the only solution at the moment is using two version of firefox altogether, I was using many very useful addons with firefox like firebug, Reminderfox, colorzilla etc. Was also using fireshot which is available for new version too but having limited features. So here is my solution:- Install latest firefox quantum in your pc then download portable firefox older version from here and just extract it any where in your pc. Create its shortcut on desktop, then right click it and go to Properties.

In the window that open go to 'Shortcut' tab and in target field write 'D: portapps FirefoxPortable-48.0. Download Uc Browser Jar Free. 2 FirefoxPortable.exe -P 'My Profile' -no-remote, so it will be 'your file path -P 'My Profile' -no-remote'. This will allow you to run both old and new version simultaneously, so that you can use old addons in old version. REMEMBER always open older version first to whom you have added the '-P 'My Profile' -no-remote', then open the new version.

I'm using now firefox v54 on Mac + firebug + some plugins for web develop and never update my ff browser in the future. Find v54 here But first what you need do after install - that is disable your Wi-Fi or Lan and then open Firefox ->Preferences ->Advanced ->Update ->and set option: Never check for updates (not recommended: security risk) Then you can run Wi-Fi or Lan, because if you don't do this - firefox download latest version on background and after restart Fox you can see latest update:-).

How to retrieve a previous version of Firefox Portable. Hi, I need a previous version of Firefox Portable (e.g. Version 19.0). The link to download Firefox Portable included in the page for Firefox Portable 19.0 leads to the download page for current version (22). How can I currently retrieve Firefox Portable. 1- Try with previous version of firefox (Temporary solution). Solution: Downgrade to Firefox 54 or, better and more secure, use the IDE with Firefox Portable (so you can keep auto-update enabled on your main Firefox browser). Solution: Download the signed Selenium IDE xpi from a 3rd party website, like here.

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