Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Dette websted vil have begrænset funktionalitet, mens vi gennemgår vedligeholdelse for at forbedre din oplevelse. Hvis en artikel ikke løser dit problem, og du vil stille et spørgsmål, har vi vores supportfællesskab, der venter på at hjælpe dig på @FirefoxSupport på Twitter og/r/firefox på Reddit.

Avatar for Username

Søg i Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Læs mere

Denne tråd blev arkiveret. Stil et nyt spørgsmål, hvis du har brug for hjælp.

I need to know how to get Firefox 3 back???? My online college course requires me to have that version and I upgraded to 4 without knowing! HELP!

kim0206
kim0206
more options

I upgraded to version 4 and now I am having difficulty with my online college course. They require me to use version 3, and I need to be able to do my classwork. Please help!

I upgraded to version 4 and now I am having difficulty with my online college course. They require me to use version 3, and I need to be able to do my classwork. Please help!

Alle svar (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

First, make a backup of your computer for safekeeping. To back up Firefox, see Backing up your information.

Next, download and save Firefox 3.6 to your desktop for future installation. http://www.mozilla.com/firefox/all-older

Close Firefox 4, and uninstall it. Do not remove your personal data and settings, just the program.

Then finally you can reinstall Firefox 3.6. Unless you have installed an incompatible add-on, it should pick up where you left off. If there are serious issues, please post back with details.

Note: I haven't actually tried this myself!