Spain’s Geeksphone is a scrappy little manufacturer that started off making Android(s goog) handsets for open-source cognoscenti before becoming the first creator of Firefox OS developer devices. On Thursday it announced it will be bringing both of those worlds together with a smartphone called the Revolution that will run either operating system — or both, if you’re an “advanced user”.

This is the latest stage in what we may term a rapid evolution of Geeksphone’s roadmap. The company’s Peak Firefox OS handset went on sale in April and barely 3 months later Geeksphone took it off its virtual shelves, encouraging people to buy the souped-up Peak+ instead. Now those who already pre-ordered the Peak+ are being offered the Revolution at the same €149 ($203) price, which will be just over half the price others will pay.

As well they might be — on Thursday Geeksphone also had to inform