How easy would it be to do a software upgrade myself if I could get hold of the disc? My DV27 has been playing up for a while now, it's getting a bit temporamental when playing CD's, sometimes it won't let me go back a track and it gets stuck and the only thing I can do is open the machine then put the disc back in, and these are discs that I've not had any problems with before. I've never had a software upgrade and my DV27 was one of the first black models so it's a couple of years old or more. I just don't think I'll have time to take it into my dealer for a few months, whenever I'm off work my dealer is either closed or I'm on DIY duty, desperately trying to get my house liveable. It's starting to bug me a bit now, I'm far to lazy to be getting up and having to walk all of 5ft to open the drive and start the CD again when it gets stuck!