There is a new minor software software update available for Nokia Asha 306 (RM-767): SW 3.81. This update is targeted for all regions, except Latin Americas.
The key changes compared to the previous 3.63 SW version:
The update is currently already available via Nokia Suite and also via FOTA (though some packages are still not released).
Yes, and really, there are not much of differences between 3.63 and 3.81, so in this case downgrading would not even make much of an difference. There is further 5.93 update coming out for some regions, where there are number of further improvements included. I will make a separate post of that soon.