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Note: This is not duplicate of How do I downgrade Firefox v. 57 to v. 56?.

I have installed firefox using sudo apt-get install firefox Right now it is installing version 63.0 which has some issue with selenium webDriver.

So I want to downgrade because this selenium webDriver is working fine with version 57.0.4.

I tried sudo apt-get install firefox=57.0.4+build1-0ubuntu0.16.04.1 which is not working and saying that:

E: Version '57.0.4+build1-0ubuntu0.16.04.1' for 'firefox' was not found

The strange thing is that I am able to install version 45 using sudo apt install firefox=45.0.2+build1-0ubuntu1

I have taken the syntax from Here.

Any help will be highly appreciated!

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  • Thank you for your prompt response. You mean I need to download the *.deb package locally?
    – user37313
    Oct 25, 2018 at 12:48
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    To see all the versions available run apt-cache madison firefox or see askubuntu.com/questions/447/… If it is not listed you will have to manually go find the version you want and download and install it or find a supported repo or PPA containing it. Going along with the comment above that version is found at launchpad.net/ubuntu/xenial/+source/firefox
    – Terrance
    Oct 25, 2018 at 12:49

2 Answers 2

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You could just remove your current firefox's version and install deb package: sudo apt remove firefox && wget http://launchpadlibrarian.net/352570250/firefox_57.0.4+build1-0ubuntu0.16.04.1_amd64.deb && sudo dpkg -i firefox_57.0.4+build1-0ubuntu0.16.04.1_amd64.deb

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  • I know this approach and its working for me. Even though it will be good if i can do this using apt-get. It can solve dependency issues if i have in future :)
    – user37313
    Oct 25, 2018 at 12:58
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    16.04 and newer releases of Ubuntu can optionally replace dpkg -i with apt install for dependency resolution.
    – user535733
    Oct 25, 2018 at 13:42
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You should read Debian Wiki. The Key for future similar to gentoo is the file  /etc/apt/preferences (similar to mask)

https://wiki.debian.org/RollbackUpdate

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