 We'll be leaving the panel powered on. Be sure to disarm your system before proceeding. Please be careful not to touch the battery or any other metal components throughout this process for your safety. And only use the included insulated screwdriver when handling electrical equipment. Before you begin, make sure you've got the right tools from your install package. You'll need a small insulated Phillips screwdriver, the 4G LTE module with the new short and long antennas. This installation will take place on the Simon XTI. The steps for upgrading your radio will be the same for the Simon XT and Simon XTI 5. First, remove the front cover. Then, open your panel by lifting the tabs and slowly swing it down on its hinge. Next, locate the old module. Disconnect the existing antenna from the gold connector. You may see two small screws holding the module in place. Remove these with your insulated screwdriver. Remove the module by lifting it from its port with the insulated screwdriver. To do this, position the screwdriver towards the top of the module. Insert and lift it from the casing. Take note of the small tabs covering the bottom left and right corners. This is where you will insert the new 4G LTE module. First, identify the black 22 pin connector on the backside of the module. This will connect face down to the black 8 pin receiver on the control panel. Insert the antenna side of the module at an angle and tuck it under the plastic tabs in the port. Once it's secured, carefully push the module into place. Next, connect the long antenna. It should snap into place into the open gold antenna connector. Thread the long antenna through the lower hole in the back cover of the panel. The shorter antenna should already be attached to your module. Remove its adhesive backing and secure it inside the lower compartment of the panel. Gently close your panel. You should hear a click when the tabs lock into place. Replace the front cover around the outside of the panel. To finalize the upgrade process, contact your service provider. And our low-cost, no-contract alarm monitoring services.