How to download the ios 7 jailbreak for my iphone 4?

How can i download the ios 7 jailbreak for my iphone 4?

1. There are no real jailbreaks for iOS 7.
2. The jailbreak you tried to download could ruin your device and/or possibly give you a virus.

No new jailbreak utility available yet, especially for iOS 7.

Jailbreaking won't break your device as long as you know what you're doing after jailbreak. A lot of users bricked their devices after jailbreak since they don't know what to do. Better consult an IT specialist if you are not certain.