Our beta builds themselves are not much less stable all our developers and about half of our users use the beta builds. Our 'stable' builds are essentially just frozen versions of our beta builds. xpi and 2) open it with Firefox a fool-proof method is to go to about:addons, click the extensions tab, click the cog in the top right, then click 'Install Add-on From File.'. If it doesn't install automatically, you may need to 1) rename the extension from. Replace Firefox's default control mechanism with one modelled on the one true editor, Vim.Ĭlick this link in Firefox to install our latest 'beta' build.