We know that Microsoft is planning to release the Windows Phone 7.8 update for older Windows Phones by early next year. While Windows Phone 7.8 has not been officially released for Windows Phone 7.5 devices, several builds for the Nokia Lumia 800 and the Nokia Lumia 510 have started appearing on the software flashing tool Navifirm.
The WP 7.8 update attempts to make up for depriving WP 7.5 users of Windows Phone 8 by bringing the WP8 start screen experience along with 10 new theme and accent colors, Bing Picture of the Day on the lock screen, security updates and new apps. However it doesn’t offer some basic necessities like the ability to connect and sync with the Windows Phone syncing tool or access to Xbox Music.
We are surprised that Windows Phone 7.8 seems to lack many features which make it usable in the modern Windows era. Especially when it seems that manufacturer’s will continue to release affordable Windows Phones running version 7.8 instead of 8.0. We think that Microsoft may be planning to bring more Windows Phone 8 features over to Windows Phone 7.5 devices, but plan to hold out in the hopes that more users will jump over to the newer platform.
There is no indication that the available builds are the final versions nor is there any assurance that they are stable enough for daily use. So unless you feel daring, we advise users to stay away from these builds until Microsoft and Nokia are ready to release the updates through official channels.
Keep in mind that flashing the software from Navifirm has risks, but if you feel adventurous, you can check out our guide on how to install Windows Phone 7.8 on your Nokia Lumia device from Navifirm.
[source] winp.cn | WMPowerUser