This was the pre-quantum era and, back then, Firefox 52 ESR (which is still available for download) offered support for both Windows XP and Vista. The past Firefox 52 ESR – the latest version to support XP and Vistaīefore September 2017, the ESR channel was home to older versions of Firefox. These so-called point releases contain imperative security upgrades. ESR releases are maintained for more than a year with important “point releases” that usually follow the regular Firefox releases. To be more precise, Firefox ESR is an older version of Firefox with a deferred development cycle that aims to offer increased stability at the expense of the latest features.īe that as it may, the ESR line does not fully compromise security towards achieving this goal. For example, imagine a national school system having to change their entire browser system because a new release does not support some important outdated features (but relevant to the system in question) or worse because of a security vulnerability.įound under the moniker of Firefox ESR (stands for Extended Support Release), it’s a browser specifically designed for organizations that require extended support. One of the main issues with mass software deployment within organizations can be the lack of extended support.

pkgAcquire::Run (13: Permission denied)Į: Failed to fetch … _b 404 Not Found [IP: 151.101.196.204 /etc/apt/sources.It may be unknown to many day-to-day users out there that the Mozilla Foundation offers a product specifically aimed at medium to extremely large organizations (schools, universities, and other international businesses). W: Download is performed unsandboxed as root as file '/tmp2/firefox-esr_60.2.2esr-1~deb9u1_b' couldn't be accessed by user '_apt'.

I tried to download the package using apt-get and this is what I apt-get download firefox-esrĮrr:1 ascii-security/main amd64 firefox-esr amd64 60.2.2esr-1~deb9u1 Has there been some changes to the repos? Do I need to update sources.list? ' ascii-security/main amd64 firefox-esr amd64 60.2.2esr-1-deb9u1 I am also unable to download the newer (60) version. It only shows version 60, and I need 52 due to the old-style extensions I need.

I had to purge it due to config problem, but I cannot get the version from the repository. How can I download and install firefox esr 52.9?

Firefox esr 52.9 download