Please keep all chips working well before updating, 1. Taking off the frontal heat sinks. And keep the ones on another side. 2. Using the abrasive paper cleaning the chips and make sure the whole plate is tidy. 3. Applying solder paste to the nut and make sure everyone has the solder paste. 4. Welding the nut in the hash board. 5. Applying thermal paste to the chips. 6. Tighten all the screw. 7. Finished and tested on the fans. Please ask sales to get the operate video once you placed order.