Sitor,
I cannot say with certainty how easy it is to upgrade to 10.1 but I am sure with the facilities already provided with GlobeTrotter it should not be a problem really.
USB 1.0 theoritcally is 12 Mbits/s compared to USB 2.0 which is 480 Mbits/s, hence according to simple calculation the difference is 40 times. In real world situation I tested it out a few time, and the difference was more like 25 times faster meaning what you can transfer with 2.0 in one minute will take 25 minutes with USB 1.0. Furthermore you mention about transfering video, with USB 1.0 you cannot transfer high quality video DVD, but only VCD quality.