Our .deb package is now available for Developer Edition and Beta builds, alongside our Nightly package for Debian-based Linux distributions.
Our .deb package is now available for Developer Edition and Beta builds, alongside our Nightly package for Debian-based Linux distributions.
See “What are my options if I want to install unsigned extensions in Firefox?” in the FAQ here: https://wiki.mozilla.org/Add-ons/Extension_Signing#FAQ
If you’re on Linux, you may have that about:config flag even in your distro-provided Firefox Stable build…