Apple released iOS 7 beta 1 to registered developers as iOS 7 was presented at WWDC, on Monday 10 June 2013. According to Apple’s rule only the iPhone with registered UDID is eligible for iOS 7 beta installation, but it also becomes possible to install iOS 7 beta on without registered UDID iPhone.
According to Reddit’s user 000MIX you can install iOS 7 beta on iPhone without registering UDID. To manage that follow these steps:
- Download iOS 7 beta 1 .IPSW file for iPhone (Search on Google)
- Attach your iPhone to iTunes
- Press and hold “Alt”/”Option” key (Mac) or “Shift” key (Windows) and click “Update” button instead of “Restore” button
- Browse to select downloaded iOS 7 beta IPSW file from your system and proceed with installation process
Warning: Users who want to retain the jailbreak of their device must stay away from iOS 7 beta update.
Note: As a normal user it might be risky to install iOS 7 beta on iPhone, so proceed at your own risk.