If your Nintendo Switch Joy-Con controllers are acting a little wonky you’ll need to make sure you have the latest Nintendo Switch console software and also the latest controller firmware.
Updating Nintendo Switch Software:
From the home screen go to ‘System Settings’.
Scroll down to ‘System’ and press the A button.
Select ‘System Update’ and hit the A button. Update if necessary.
Update Firmware Nintendo Joy-Con Controllers:
Starting from the home screen, click on ‘System Settings’.
Scroll down to ‘Controllers and Sensors’.
Browse down to ‘Update Controllers’.
Your Nintendo Switch Joy-Con controllers will begin the update process.
Congratulations your Nintendo Switch controllers has been updated.
Video Guide for Updating Switch’s Joy-Con Controllers: