The demise of Firefox OS marked the end of an experiment that, although innovative, was ultimately unable to gain significant traction. However, the legacy of Firefox OS lives on in the form of its influence on subsequent technologies.

This is where the "Firefox OS ISO" became a myth. Hackers and developers began porting the Gaia user interface (the front-end) and the Gecko runtime (the back-end) to x86 architecture. You could download a virtual machine image, mount it in VirtualBox or VMware, and watch the miracle happen.