Run X Term and become root, then type fiasco-image-update /home/user/MyDocs/zImage xxx mhz.fiasco

Replace the xxx with correct mhz number, e.g. if your flashing the 800mhz you need to type fiasco-image-update /home/user/MyDocs/zImage800mhz.fiasco

Remember X Term is case sensitive.


Big thanks to BIGGZY! from talk.maemo.org

Source: http://talk.maemo.org/showpost.php?p=596920&postcount=1098