how to upgrade Live with walkman to ICS 4.0.4 and Root it
In this post i want to show you how to upgrade live with walkman (wt19i) firmware to newest android Ice Cream Sandwich 4.0.4 (4.1.B.0.431) via offline update method. This june, live with walkman receive an update for renewing the firmware to ICS via PC Companion (OTA). But some users reported negative issues after upgrading their phone via pc companion (e.g:lag, not smooth, face unlock setting not appear, etc).
complete article here: http://www.qosmodro.me/2013/01/how-to-upgrade-live-with-walkman-to-ics.html