The G435 was developed before Nintendo released Bluetooth functionality. Hence, the initial release of G435 headsets could not connect to Nintendo Switch with Bluetooth. This has been solved for future production. If you are having issues connecting the G435 to your Nintendo Switch, you'll need to update the firmware. You can download the G435 LIGHTSPEED Wireless Gaming Headset Update Tool here.

To update the firmware:

1. Make sure your G435 headset is connected to the receiver and power on the device.
2. Check if the battery level is at least 30%. For steps on how to check your battery level, click here.
3. Run the .exe file you have downloaded. You'll see this window:
   
4. Click Continue and follow the onscreen instructions. 
   
   Once the firmware update is complete, you'll see a window letting you know the update was successful.
   

NOTE: If the firmware update process is interrupted for any reason, the update may fail. In that case, please hard reset the headset by inserting a sim ejector tool in the reset button for two seconds until the green light blinks. The reset button can be found under the left earpad.