So I got a Cube the other day, and I have basically been working on the thing for the past 2 days trying to get Leopard on it. I have pulled the drive probably 5 times now, and I am hoping it will stay there now. Anyhow, the Cube came to me running Tiger, I wanted/need Leopard, so I threw the HDD in my Quad and installed Leopard. I ran through the setup and the install and the drive are both fine. It was brought to my attention that the Cubes need a firmware upgrade to be able to boot Leopard, as mine KP's right when the spinning gear shows up. So I installed OS 9.2.2 and am currently trying to update the firmware, but the .smi file wont open. It throws an error "Error -39" or something, I seriously need this to work, cause otherwise Tiger is gonna be stuck on it and then I really can't use it too much.