Have you registered here -
http://www.endian.com/en/community/efw-updates/ - in order to download updates?
In not, do so then see below
For registered community edition users . . .
From console/ssh login:
# efw-upgrade -s
Please choose the appropriate channel for your environment and hit [ENTER]:
1) Production (stable releases)
2) Development (bleeding edge)
1) - Current 'Stable' release v2.5.2
2) - Developement 'bleeding edge' v3.0
You will be prompted for your registered/registration email address after selecting stable/development channel
Author