If you are planning to jailbreak your iPhone, then this is the latest version of checkra1n available for PC (no Mac required). It is a very powerful tool and can jailbreak iPhone even on an Activation lock screen. It doesn’t matter even if you know or you don’t know the password to log in. You may then want to bypass iCloud using this tool.
The login details:
At the $ prompt, enter: sudo checkra1n
You are personally liable for using this tool and that you are fully aware and responsible for its usage.