Believe that many iPhone 5s and 5c users are looking forward to Evad3rs team can bring an untethered jailbreak for iOS 7 in the near future. Analysis based on the latest jailbreak status, new iOS 7 jailbreak may appear before 2014.
But we have found a detailed approach on how to jailbreak iOS 7.0.2 on iPhone 4 in appaddict.org. Accurately speaking, currently as of now Mobilesubstrate and Cydia is not compatible with iOS 7. This method will only Jailbreak your iPhone 4 and give you root access.
Then below will show you how to perform a iOS 7 (7.0.2) jailbreak for iPhone 4 using Opensn0w. Before jailbreaking, you need prepare Mac (OSX 10.8), iPhone 4 (iPhone3, 1 iOS 7.0.2) and Dock Cable.
The iOS 7 Jailbreak process can be divided into the following major steps:
1. Install Automake and Autoconf.
2. Clone opensn0w from github.
3. Install & Build Opensn0w.
4. Root & Install openssh.
6. Install MobileTerminal and other debs.
You can click here to check the more detailed steps
In short, this is indeed good news, although currently no new progress about the iOS 7 jailbreak on other devices. And we can only believe that hackers were able to bring and untethered jailbreak this year.