I updated the firmware on my HTR-6090 last year. There are detailed instructions on the Yamaha website. But as I recall, I had to download firmware and burn it on a CD (did this on my computer through Yamaha web site). Then I put CD in my CD/DVD player that is attched to my HTR-6090 and used a special power on sequence to start the firmware update. It's not a very difficult procedure once you have the instructions. Good luck.....