LG P500 Android Update help

[Clarkson]

Hi there,

My brother has recently passed me on his LG P500 as his due an upgrade. It is currently using Android version 2.2, and I want the latest Android version for it. I'm kind of puzzled as there are many different versions, I'm seeing 2.3.3 Gingerbread some places and Oxygen ROM 3.0, also Jelly Bean.

Please can someone tell me what is the latest available official Android version that is available to me, much apprecaited, thanks.