Mini Ipad 7.0.6

Hello Guys,
Iam Brazilian guy and i have one mini ipad ios 7.0.6 and i try use the evasi0n 7 i.0.6 but when the progress step in "Modify Roofts" not show the big "E" and the progress stop here, program on PC close. Please help me in this...
Sorry for the wrong words and sentences.
Thanks

Iam Windows user...