Member Avatar for Priti_P

Hello,

For some testing purpose , I want to downgrade my PC's Firefox from 25 to 22.
How can I do that?

OS: Ubuntu

Is it simply like uninstall firefox 25 and install 22?

Please give me refer link of download Firefox 22.

is there command in Ubuntu to dowmload Firefox 22 directly,(which I may have missed)?

  • 3 Contributors
  • 2 Replies
  • 299 Views
  • 2 Hours Discussion Span
  • Latest Post Latest Post by sebastianedu

Dani AI

Generated

Short, practical plan — two safe options and the main cautions. is correct that older builds exist; is right to mention running multiple versions. The least-risk approach is to run Firefox 22 as a local (non-packaged) copy so your system Firefox (and apt) stays intact. Only use a package downgrade if you understand APT/dpkg and are prepared for dependency and security fallout. (Old Firefox releases are insecure; downgrading for ordinary browsing is not recommended.) (support.mozilla.org)

Recommended (safe) workflow — local copy + dedicated profile:

  1. Back up your profile: 
    cp -a ~/.mozilla/firefox ~/.mozilla/firefox.bak
  2. Download the Firefox 22 Linux tarball from Mozilla’s downloads/archive and extract it. Then run the binary directly from that folder. Example (when the tarball is in ~/Downloads): 
    cd ~/Downloads
tar xjf firefox-*.tar.bz2
mv firefox ~/firefox-22
~/firefox-22/firefox &

    This keeps your system packages untouched and matches the “install from Mozilla builds / local installation” instructions. (support.mozilla.org)

Profiles and running side-by-side:

  • Create a separate profile (so the old browser does not touch your main profile): use About Profiles (about:profiles) or the Profile Manager. Run the 22 build with that profile and avoid profile collisions with -P (or -CreateProfile) and -no-remote when needed. Example:
    ~/firefox-22/firefox -P "ff22" -no-remote &

    This prevents accidental profile migration and data loss. (support.mozilla.org)

If you must install system-wide (risky):

  • Check available package versions: apt-cache policy firefox or apt list -a firefox. Downgrading via APT may require grabbing an old .deb or pointing to archived repos. If you lock a working version to prevent upgrades use:
    sudo apt-mark hold firefox

    Be careful — held old browsers miss security fixes. (askubuntu.com)

If tests require browsing with an ancient engine, prefer an isolated VM or snapshot (VirtualBox or similar) so the rest of the system stays secure. (manualzilla.com)

Recommended Answers

All 2 Replies

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.