Question from a noob! On the HTC website there's a ROM upgrade available to download, (2.73.405.5 Release Date: 2009-09-11). My Hero is brand new, out of the box, the build version is 18.104.22.168. The question is: what does the new ROM do, does it improve performance? Is it worth installing it? It also says that installing it will remove all data installed on the phone, does this mean it will remove all my contacts, apps etc? Also, the firmware verion on the phone is 1.5, is there an upgrade to this too? As I said I'm a bit of a newbie, so any help is much appreciated! I'm on T-Mobile UK btw.