Upgrade the Switch Controller Version 1
Step 1: Download the compression package and extract file on PC.
Step 2: Open the file, display the following image.
Step 3: Connect your controller to PC with the included USB cable and wait until ONLY the 1st LED flash. (the usb cable must have date transfer function)
Step 4: Then press and hold down X,Y & HOME button at a time about 3 seconds, the grayed out “Update Firmware” option will auto enable.
Step 5: Click the “Update Firmware” button to begin upgrade.
Step6: When the upgrade process is completed, please disconnect the usb cable from computer and let the controller at power-off status.
Step7：On console, please operate by the following steps to clear all the infamation of controllers : System Settings →Controllers and Sensors→Disconnect Controllers. Then restart the console, enter into interface of Controllers→Change Grip/Order, refer to the instructions for the first-time connnecting method, press Y+HOME keys to connect.