Need iPhone jailbreak and os installation software

I have a iPhone 4 and 5 I need to install on and jailbreak them , help me with a free tool for windows.

Please provide me a best tool.

Jailbreak is always free.

Check your iOS Version and search for jailbreak based on the version. If you couldn’t find one, post here the details. someone might help.

Soory bro i can’t find it bro , any other solutions?