We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

搜索 | 用户支持

防范以用户支持为名的诈骗。我们绝对不会要求您拨打电话或发送短信,及提供任何个人信息。请使用“举报滥用”选项报告涉及违规的行为。

详细了解

I want to revert to Firefox Version 4 (and remove Version 5). How do I do this?

more options

I just downloaded the newest Version of Firefox (5.0) and now my McAfee Site Advisor won't work.

For that reason, I wish to go back to the older 4.0 Version. How do I go about doing this?

I just downloaded the newest Version of Firefox (5.0) and now my McAfee Site Advisor won't work. For that reason, I wish to go back to the older 4.0 Version. How do I go about doing this?

所有回复 (1)

more options

Version 4.0.1 has serious security issues that were fixed in Firefox 5. It would be more secure to roll back to 3.6.18.

Regarding McAfee, an update for Site Advisor is expected next month, according to this recent thread: What happened to the Mcafee Site Advisor?.

---

First, I recommend backing up your Firefox settings in case something goes wrong. See Backing up your information. (You can copy your entire Firefox profile folder somewhere outside of the Mozilla folder.)

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

( For other versions, see the ftp server at ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/ )

You could install Firefox 3.6 over Firefox 5 or you could uninstall Firefox first. If you uninstall, do not remove your personal data and settings, just the program.

Unless you have installed an incompatible add-on, Firefox 3.6 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!