iBetaDownload、iOS苹果系统测试下载网是提供苹果最新beta版系统下载和最新信息的网站，提供iPhone、iPad、iPodtouch的最新beta版系统下载和测试包。

　　iBetaDownload is not responsible for what may happen to your device as a result of using anything listed on our website. Download and utilize at your own risk. iOS 7 is supported on the iPhone 4, 4S and 5, the iPad 2 - 4, and Mini, and the iPod touch 5.

　　How to extract a DMG on Windows:

　　1、Get your UDID registered from any reputable source;

　　2、Download iOS 7 from iBetaDownload website;

　　3、Plug your device into your computer, and make sure to back it up;

　　4、Hold Shift (Windows) or Alt (Mac) and click 'Restore' in iTunes;

　　5、Select the iOS 7 file and wait for it to restore;

　　6、Enjoy! Make sure to regularly update to the new betas that come out.