DO NOT JUMP THE GUN AND DOWNLOAD THE LATEST VERSION THINKING IT WILL WORK FOR YOU. As far as Operating System goes, it does not matter whether you use: -Microsoft Windows Vista -Microsoft Window XP -Mac OS X Leopard -Mac OS X Tiger THEY ALL WORK. There is no difference between 1.0, 1.1, 1.2, 2.0, 2.1, 2.2, 2.3, AND 2.4 The changes for each version were only for iPHONE users. It is still the same for iPod Touch Users. ZiPHONE WAS DESIGNED FOR THE iPHONE. NOT THE iPOD TOUCH. IF IT WORKS, you either have an 8 GB iPod Touch or you got damn lucky and have a 16 GB working. For 16 GB or Higher users, it is PURE Luck. You cannot reproduce the same results TWICE in a row. I've TRIED. ADD: As lilplaya2567 pointed out, Most apps still do not work for 1.1.3.