I spent the extra money and bought the Gold Edition Hot End and I have got it all installed and ready to go. I used it to upgrade my Creality Ender 5 Pro and it looks great after it is all put together. My issue is trying to update the firmware. I went to the Creality website and downloaded the .bin file that contains the original firmware code. I cannot seem to get the .bin file to extract or open at all. I have tried multiple methods/apps on both my Macbook and my PC. The closest I can get is having one of them tell me that it can't be extracted because it is an unsupported or invalid file type. Does anyone have experience with adding the Titan Aero to their machine? Any advice on getting the firmware updated would be much appreciated. Would love to get my machine printing again!