Hi all, gosh this might seem like the most dumb questions for some but I'm a little technologically challenged so I just wanted the opinion of some of those who know a lot more then me regarding droid phones! I have a HTC Hero, nearly for about a month, on Orange contract and it's running on 1.5 version I saw somewhere in the settings. A notification popped up a couple of days ago asking to do a system update. It recommend I connect to Wifi to do install the update but I can't get Wifi in my house (I rely on mobile broadband on laptop and on 3G on the phone) so I ignored it. I can however get Wifi when I visit friend's houses so I was wondering whether it's necessary for me to install the update? Is it a large improvement or needed for future use? Also, will it wipe anything off my phone? Thanks guys for what may seem obvious!