Originally Posted by
Braindrain
While I'm far from an Android expert, I'm on 2.3 even though I'm pretty sure there isn't a 2.3 firmware base for my phone (HTC Legend).
That's not quite the same. I'm aware that there are Android firmware for certain HTC phones, like the Touch Pro / 2 / Legend, etc. These are cooked up and are not 100% reliable. For instance on the TP2 the camera wouldn't work, blue-tooth wouldn't work, etc.
This does not mean the XDA / SDX developer would have the time, resources, or inclination to develop or brew something for a unpopular / OEM unsupported phone like the Sony Ericsson with an entirely new version of Android altogether.
So do not be fooled into thinking that any Android phone could be updated to any Android OS version, because that's just not true.