To install XBMC for iOS you must have a jailbroken iDevice running iOS 4.x through 5.1. Hardware decoding is currently not working on iOS 6.
For hardware: iPad 1, iPad 2, iPad 3, iPhone 3GS, iPhone 4, iPhone 4S, iPod touch 3rd gen (16GB and 32GB models only), iPod touch 4th gen.
iPad 4, iPad mini, iPhone 5, and iPod touch 5th gen do not have jailbreaks yet.
Installing from Cydiasome tests by me very fine run this app
saludoshttp://wiki.xbmc.org/index.php?title=XBMC_for_iOS_specific_FAQ