Because B2G OS is currently under active development, and is in a prerelease state, the best way to ensure you have an up-to-date copy installed is to build and install it yourself. The articles listed on this page will guide you through building and installing B2G OS on an emulator or compatible device, or the Gaia user interface in the Firefox browser.
Building and installing B2G OS requires a significant amount of time, network bandwidth, and computational power. This page outlines the goals of the build process and the steps of that process in order to help users along the way.
The B2G installer add-on helps to solve the long-standing issue of not being able to redistribute full system builds, because of blobs (proprietary components). This article details how the add-on works, and how to install it.