It’s just a week ago when Nokia began the delivery of Windows Phone 7.5 Refresh (aka Tango) build 8773 to exciting Lumia models. Now, a new firmware build has been found up on Navifirm. The new build number is 8779, indicating some small changes to the previous code.
The exact ROM build for the Nokia Lumia 800 is 1750.805.8779.12221, while the Lumia 710 is getting 1600.3031.8779.12180. 8779 means the OS version, while the 12221/12180 indicates the firmware version.
A firmware up on Navifirm usually means a delivery in the very near future. We’ll post more when we see the first 8779 builds of Tango in the wild.