I did a Reset of Firefox - how can I add my 'old data firefox' back?

I did a reset of Firefox which was a mistake because it does not solve my problem.

In any case, I now have a file 'old data firefox"which include things like Ad Blocker more so how I put all these programs in Firefox yet?

When you reset Firefox and a new profile is created and some personal data (bookmarks, history, cookies, passwords, data form) are automatically imported and the current profile folder will be moved on the desktop to a folder "Old data Firefox".
Installed extensions and other customizations (toolbars, Pref.) that you have made are lost and must be redone.

It is possible to retrieve the data from the old profile, but be careful not to copy the files corrupted to avoid transporting more problems.

See:

You can use this button to go to the Firefox profile folder currently in use:

Tags: Firefox

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