Well, my app works great on the simulator, and despite the hours and hours spent in understanding how to send the app to my iphone, i cant get it to work. There are 2 problems: When I try to build an app to Release-Device i get: codeSign error: no certificate found in keychain for code signing identity 'iPhone Developer ' Ive created my certificate, used the script and modified info.plist. Im stucked. But, i can build my app if i use Release-Simulator. It creates a folder apparently similar to the one i would get using Release-Divice, it contains an .app, i send this .app to my iphone via ssh, it shows the default.png and then, go back to springboard. I think is because Release-Simulator is incomplete or something, maybe I can manually fix it. ive bypassed the code signing check using : sysctl -w security.mac.proc_enforce=0 sysctl -w security.mac.vnode_enforce=0 I was also wondering if there's a way to Use Release-Simulator in Xcode. Fix the .app file so it works, and then create a .ipa, the reason i want to do this is im developing and app for personal use, but i would like some friends to use and test for bugs or whatever, They are not very involved in iPhone development but ive installed mobileinstallation patch on their iphones so they can use my ipas, of course, if i get it working.