5045 Updating firmware

Probably a very simple question, but I guess we al have to start somewhere !!! I have a 5045 (UK model) and was thinking of updating the firmware, hopefully to enable the copying of some of my films onto the HD (DVD and VHS), but reading some of the other posts this seems to sometimes cause more problems than it solves.
Can anyone enlighten me on the benefits of attempting this as I would not want to end up with a unit that locks. Also a beginners guide on how to do this would be great. I have downloaded the latest firmware from Liiteon, but have not attempted to load it yet (first timers nerves I guess!!!)

One last thing…if anyone can help on my earlier post re copying music to the HD it would be appreciated. :confused: