Install iPhone application to device without paying

How can I install my own iPhone application to my iPod Touch or iPhone without paying? I follow some documentation, but it always fail. Is there a tested method?

I am using iPhone SDK 3.1.3 with Xcode v. 3.1.4. The device is usin开发者_如何学Gog v. 3.1.3.

You could try asking a friend somewhere who has registered as an iPhone/iOS developer as a company instead of as an individual to add you as a team member and also add your device to the team provisioning.

Or you can jailbreak it, and upload your application, re-spring.

1. Jailbreak
2. Create a new folder with name payload
3. Copy the .app file to this folder and compress the folder
4. Rename the ZIP file to yourname.ipa and click keep ipa