тут скачать можно
http://spiritjb.com/
а тут инструкция
http://iphone-mods.ru/forum/index.php?/topic/276-spirit-%D1%83%D1%82%D0%B8%D0%BB%D0%B8%D1%82%D0%B0-%D0%B4%D0%BB%D1%8F-%D0%BD%D0%B5-%D0%BF%D1%80%D0%B8%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D 0%BD%D0%BE%D0%B3%D0%BE-jailbreak-ipad-iphone-%D0%B8-ipod-touch/