After spending nearly 3 hours scouring the Web trying to find a way to configure my JY-MCU HC-06 Bluetooth module. There are a lot of great tutorials out there. Many of them refer to setting the key pin HIGH, or a combination of LOW then HIGH while powering on the module. However, none of these approaches worked for the unit I have. Read on to see how it can be done. Oddly, I found the answer in the DX discussion forums related to this module. Here’s the thread. Read on for how I managed to get it working.