Windows Phone "Tango" aka CR3 is the OS update everyone wants though very few know why. Indeed it brings only a handful of updates, mostly revolving around MMS options and geolocation icon. The OS update is mostly aimed at the low-end 256MB devices that are now hitting the market though it does give companies a chance to tie in precious firmware updates with the OS.
Having said all of that the Finish Tango ROM (8773 with firmware 12140) popped up on Navifirm this morning and yes, can be downloaded. Does that mean it can be flashed to your AT&T Lumia 900? We wouldn't recommend it as down-grading the ROM to the proper one is not guaranteed. Still, we know many of you are anxious on this end so we'll see what the more ambitious folks have to say if someone dares to flash.
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Daniel Rubino is the Editor-in-chief of Windows Central. He is also the head reviewer, podcast co-host, and analyst. He has been covering Microsoft since 2007, when this site was called WMExperts (and later Windows Phone Central). His interests include Windows, laptops, next-gen computing, and watches. He has been reviewing laptops since 2015 and is particularly fond of 2-in-1 convertibles, ARM processors, new form factors, and thin-and-light PCs. Before all this tech stuff, he worked on a Ph.D. in linguistics, watched people sleep (for medical purposes!), and ran the projectors at movie theaters because it was fun.