Finally i have unlocked the iPhone 4s which Tinyan got it from her uncle about half a year ago. Thanks Steve for letting me know this solution. It unlocks a jailbroken iPhone 4 or iPhone 4s using SAM(Subscriber Artificial Module) which is written by Sam Bingner and it is confirmed by the MuscleNerd of iPhone Dev Team.
You can find the unlock procedures in the following 2 posts.
I tried a few times by following the above steps but no luck. Whenever i connect the iPhone 4s to iTunes in the final step, iTunes always returned that the phone cannot be activated.
Finally, i follow the screencast made by Jeff Benjamin from iDownloadBlog and suddenly the signal bar appears.
Continue reading Unlock iPhone 4s using SAM
The AVAudioRecorder creates .caf format file in my next iPhone Application. so what is .caf file?
Core Audio Format (.caf) is a audio file container developed by Apple for audio files. A .caf file can contains different audio file formats just like .mov container for different video formats.
The post shows you how to convert the following file extensions to .caf using iTunes. Continue reading iTunes – Create .caf File
Adding an application icon to your iPhone Application is simple and straight forward except you need to pay attention to the following few notes before you start working on the your app icon.
Continue reading iPhone – Add The Application Icon
最近在公司拿了一本書看，書名叫做《矽谷大革命》，英文書名是《REVOLUTION In the VALLEY》，作者係Andy Hertzfeld。
Folklore.org: Macintosh Stories/