I updated my BD-80 from 1.1 to 1.5 with no problem. Downloaded the new file, burned it to a cd and followed the instructions on Panasonic's web site. However, what happened when I inserted the CD and what Panasonic says will happen bear no relation to each other. The machine never said "bye" and rebooted. After a couple of cryptic messages it said "L main" and after a while "W main" There was no need to reboot after it finished. 1.5 was installed.