and nothign happened

Are you running the developer version of the software?

If you are not running the developer version of the software, you won't get a shell prompt when you Q and nothing will happen when you type those commands.

Make absolutely sure to go through every single step listed in the FAQ, from the very top, in exact order. Making sure you were on the developer version was one of the steps.

Did you also rule out disk drive problems before starting that procedure, as was listed in the FAQ?