I don't know the answer, that's why I asked you I installed the Lenovo certificate.. after that....the SLP key... but ->
Ok... LOL EDIT: "How did you manage to flash the bios correctly? " I had a 64bit installation before....so I installed Windows 7 32bit (/x86) and it worked
No, you do not run the command twice....I do not know which bios file goes with your computer...you choose only one of them and make sure it is the correct one... But I have no clue of what to tell you with regard to which one to choose.