Decided this morning to check latest version for my phone through SETTINGS - DEVICE- UPDATE. And I found another latest version which I installed.. I googled it up later to see the improvements here...
V 15.9 ..
22 05 13..
Rm 813

A new software update v15.09 is now
rolling out for Nokia Asha 302 feature
phones. The latest firmware brings updated
apps, better stability, improved features and
performance improvements to the device.
To get this software through your device,
type in *#0000# on the home screen or go
to Device Manager. Select Options > Check
for updates and follow the on-screen
prompts. Alternatively this software release
is also available through Nokia Suite. We
recommend you to backup all your personal
data before updating the firmware.
Key changes compared to the previous
14.92 SW version:
eBuddy application added.
Updated versions of Twitter & Facebook
applications (*).
Updated versions of Email & Chat
applications (*).
General performance improvements.
Note: The availability of software updates
are region specific, if you don’t have it
already it should be available soon.
http://www.symbiantweet.com/new-software-update-available-for-nokia-asha-302