The NOKIA 800 already can download the update to ( Windows Phone ) WP7.8 However, because of this update batches push, only the Netherlands have received the official update officially, so buddies of Taiwan may have to wait on the 1st class.
In addition, all LUMIA equipment to get WP7.8 upgrade after Lumia 800, four WP7 models (Lumia 510,610,710,900), WP7.8 upgrade firmware also appeared before Nokia firmware download is Navifirm.
It is understood that the latest upgrade version of Lumia 510 , 610 , 710 , 800 , 900 for 8858 , most European version as well as the Asia-Pacific version.
So far, only the Netherlands Lumia 800 users have received a push Nokia WP7 upgrade. However, due to the upgrade information for several models already in place, I believe the far distance official push the estimated full month.
In addition, it is released near Lumia 510 will be shipped pre-installed Windows Phone 7.8 system.