Unbricking MBL without UI or SSH enabled - THE guide

Thanks for answering. I have a question. What do you mean by Type chmod 777 unbrick.sh

 The file i downloaded is apnc-021109-053-20120413(1).deb. Inside there is a folder called data.tar.lzma. Inside that one there is a folder called data, then CacheVolume, then upgrade. Inside that is rootfs.img and rootfs.md5. You said .dmg file. Where is that? /Rolle