Surya467 from xda-developer’s forum has downloaded and flashed his Lumia 800 with the firmware version 1750.805.8773.12140 reported by us yesterday. This Tango/WP7.5 refresh firmware version became available for the very first time for Lumia 800 over the NaviFirm. Tango firmware versions were already available before for Lumia 710 and 800C.
The good part is that Tethering/Internet sharing is now confirmed to be arriving with this update. Surya has also uploaded video of his Lumia 800 running the 12140 firmware. Check the video below.
Now coming to the probable changelog as has been mentioned by many testers on xda-developers forum,
- Tethering/Internet sharing
- Updated camera settings and improved image quality
- Marketplace now shows as Nokia marketplace
- Export contacts to SIM
- Advanced network settings for calls and messages
- Xbox animated tiles
- New sign on the top bar
- Battery performance improved
Also check the below screenshots posted by Surya467 over the xda forums.