NaviFirm Showing Windows Phone 7.8 For Nokia Lumia 800, Lumia 510
The Windows Phone 7.8 platform has been spotted in NaviFirm for Nokia’s devices powered by Microsoft’s Windows Phone 7.5 OS, suggesting that it should not be too long before users receive it officially.
What Windows Phone 7.8 brings is a new home screen with live tiles available in 3 different sizes, just like in Windows Phone 8. A whole bunch of new interface theme colors have been thrown in, although the background can still be had in either white or black. Also, the lock screen wallpaper can be replaced with the one featured in the Bing application.
If you want to upgrade your Nokia Lumia 900,800,710,610 and Nokia Lumia 510 to Windows Phone 7.8 by flashing method (all data(s) will be loss), you can just download the firmware from navifirm and use flashing tools (e.g Nokia Care Suite). Simply select the device from the list, and then choose to download the latest firmware available for it (it should be the last item in the list in the middle, labeled 1750.823.8858.12460 for Lumia 800, for example).
Please note that you flash your device at your own risk and we cannot take any responsibility for damage caused to your Windows Phone.