How to Boot into Tethered boot mode using iBooty
Step 1: Open your office iBooty.exe.
Step 2: Simply select your device and follow the instructions on the screen for the device in DFU mode.
Step 3: Once your device is in DFU mode iBooty Download greenpois0n payload and
Step 4: Buy your jailbroken iPhone, if you leave an iBooty “Done”message.
You can view the video guide for your convenience: