I've been reading the DA4ES /7ES firmware update threads over the last couple of days. I noticed that my serial number for my 7ES falls in the "need to upgrade" category. However, when I tested my DD-EX and DTS 6.1 DVDs on my unit it functioned properly. I know that DD-EX requires you to set SB Decoding as "Matrix" rather than "Auto" in some titles (i.e. Star Wars - EP I & II). Otherwise it stays in 5.1 mode. So, correct me if I'm wrong... the firmware update does not fix this. When I put in LOTR: Fellowship of the Ring (EE) and I had the 7ES in "Auto" it detected the 6.1 discrete and automatically set me up in 3/3+1 which is using the built-in DTS 6.1 decoder. So again, the firmware update to me seems unecessary since it was processed correctly to begin with. For those that have applied the firmware update, what's the point if it doesn't add any extra value? The real danger is that by applying this, Sony could void the 5 year warranty. Is it really worth the risk?