Nokia is trying to make it's Lumia devices a 100% bug free devices - in every other way possible. With Firmware update ID #12072 -- this is the 4th Firmware update from Nokia for Lumia 800.
This week's firmware update brings some major bug fixes and resolves potential issues. The previous version (12070) addressed some battery charge issues, but introduced volume problems related to game play and louder than usual ringtones.
Nokia is rolling out a 12072 update to some regions this week, which addresses the volume oddities and allows the camera app to automatically detect 50Hz or 60Hz flickering using flicker reduction. We haven't been able to test and confirm either of the improvements, but Vodafone Australia have revealed that it's rolling out to Lumia 800's in that particular region right now.
You can download the firmware update #12072 - Click here to download