Open the pangu dmg and move the application to your /Applications folder
Open the terminal and run the following command: sudo -b /Applications/pangu.app/Contents/MacOS/pangu
Plug your device into your computer and trust your computer
Disable your passcode (You will be able to re-enable it once the jailbreak process is done)
Set your device's date to any point before June 2014
Press jailbreak in the Pangu app on your computer
Open the Pangu app on your device once it appears on your home screen
Tap Continue to trust the app and allow it to run
Your device will reboot after a short period, then you will need to unlock it
Wait a little while and your device will reboot one more time
Once you see your lock screen, you will be jailbroken with a fixed untether package that will no longer cause bootloops while in the dark. You can now use Cydia to install tweaks, themes and more.