Hi, I have the same problem:
"Update FAILED
(CODE 8000900C) MIDI devise timed out waiting for a response
Make sure all the cables are still connected and try to update again"
Two weeks ago I've bought a Noname MIDI-USB Converter and it doesn't work. Yesterday I've bought a new one M-AUDIO MIDI SPORT UNO (because I've read this somewhere on these sites that this is the right one) and it doesn't work too. I'm using WIN7 64 and the newest driver for MIDISPORT downloaded directly from M-AUDIO sites. I've tried the connection on two PC's and the problem is the same.
Please, help me to solve the problem. I spent a lot of money and with no success.