Very strange. When I had problems with the connection, they were revealed, when I performed the test. One thing I noticed, is that sometimes the recognition of the Tyros HD in the File Utility Software is very slow, so wait a while after starting the program.

Meanwhile I tried the USB-storage mode in my desktop PC and it worked immediately. You don't need any drivers for this and the connection is much much faster. You need OS version 1.20 to be able to use this mode. No idea why this operation doesn't work with laptop...

-- José.