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restore old version firefox

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the update was forced on me. now i no longer have my old version of firefox. how do i restore to old version please?

the update was forced on me. now i no longer have my old version of firefox. how do i restore to old version please?

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Hi blackepoisin, which parts of the update do you not like?

Old versions of Firefox are always available, but not recommended. There's more info in this article: Install an older version of Firefox.

I'd love to hear your concerns, but to address some points other users have raised:

Tab Bar Appearance

Some users have said these are problems for them:

(1) Low contrast of black on gray is harder to see (2) Takes up more space vertically (3) Prefer to have separators between inactive/background tabs (4) Using text to indicate playing/muted state is harder to see at a glance than the old icon (5) Prefer tabs to be "connected"

For #1, if you prefer the colors of the "Default" theme from Firefox 57-88, someone created an add-on theme that emulates it. You can give it a try here:


If that color doesn't suit you, the Firefox Color extension lets you create your own theme:


For #2, you could take a look at Compact mode. More info in: Compact mode workaround in Firefox.

For #2-#5, you can restyle your tab bar by creates a userChrome.css file. It's a bit of project for first-timers, but if these issues are priorities for you, I'm happy to explain in more detail.

Finally, for testing purposes, the developers left a preference to switch the tab bar and address bar between new style and old style in Firefox 89. This is not expected to continue in Firefox 91, but maybe you want to use it for now.

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk.

(2) In the search box in the page, type or paste browser.proton.enabled and pause while the list is filtered

(3) Double-click the preference to switch between true (new style) and false (old style)