Apparently ... I need to trawl the LG site to find it but a few users have reported upgrading to it and its a faster phone as a result :

http://android.modaco.com/content/lg-gt540-optimus-gt540-modaco-com/318798/android-2-1-update-from-lg/


If I upgrade to Android 2.1 on my phone does it mean I lose all my applications etc ?  Do I lose anything ?
If so, is there a way to backup and restore prior to performing an update ?




cheers