How do I flash and update the CK15i’s software?
Kindly have a read at the link below to know how other users sorted this problem out -
It isn't working..... it says that phone is already up to date. but there is a new update available..
perhaps through Sony Ericsson Update Service
There is a new update for this device but is isn't recognized by the update service. it indicates that phone is already up to date....
on your phone #*878# to check firmware number and update date, if it match to the sony Ericsson update service then you cannot update firmware. Also possible the update proposed by sony Ericsson update service is not for your device?
follow this guide for manual update