Just came across this while browsing on the techie-buzz website, as to what the firmware upgrade from R1FA014 to R1FA016 does...
"The major changes which have been noticed are improved audio quality and the noise has been reduced with increased bass which makes the audio quality very good. Another change is in the camera quality in which shooting at night has improved drastically with less noise in the pictures.
The onscreen keyboard was a problem with the Xperia X10 as entering text was irritating. The problem was that sometimes a single touch was not sufficient to select a letter, but now it is better"
Here's the link to the website: Sony Ericsson Xperia X10 software update | Sony Ericsson Xperia X10 firmware update
"The major changes which have been noticed are improved audio quality and the noise has been reduced with increased bass which makes the audio quality very good. Another change is in the camera quality in which shooting at night has improved drastically with less noise in the pictures.
The onscreen keyboard was a problem with the Xperia X10 as entering text was irritating. The problem was that sometimes a single touch was not sufficient to select a letter, but now it is better"
Here's the link to the website: Sony Ericsson Xperia X10 software update | Sony Ericsson Xperia X10 firmware update