tumpang link jap...

http://www.sonyericsson.com/cws/support/mobilephones/downloads/xperiax10?cc=gb&lc=en

http://www.xperia-x8.com/how-to-upgrade-android-1-6-xperia-into-android-2-1-on-xperia-x8/
http://talk.sonyericsson.com/message/36380