This week brought us plenty of news about the global launch of Firefox OS, as well as some new looks at native Firefox OS hardware. If you’re interested in the platform in general, but are a bit hesitant to throw down more cash on an upstart OS like this, you might want to think about flashing an existing handset with a Firefox ROM. If you’ve got an Xperia E lying around, Sony has just the thing for you, releasing an experimental Firefox OS ROM today.

That choice of phone shouldn’t be too surprising, as the Xperia E’s processor and display are pretty much in line with the sort of low-end phones already announced to arrive running Firefox OS. Before you get too excited, we should make clear that this is a seriously limited early look at the platform – more limited than even the recent Ubuntu ROMs we saw – and there isn’t a lick of wireless connectivity offered, not even WiFi.

Keeping that under consideration, the ROM is ready for you to start poking around through, so if you’ve got an unlocked Xperia E and a touch of curiosity, this might be something fun to look at.