If your Nintendo Switch won't update, there are a few steps you can take to try and fix the issue. First, make sure your Switch is connected to the internet. If you are using a wireless connection, try moving closer to the router to improve the signal. If you are using a wired connection, make sure the cables are securely connected. Next, try restarting your Switch. This can sometimes resolve issues with updates. To do this, hold down the power button on the top of the Switch until the power menu appears. Select "Power Options" and then "Restart." If the issue persists, you can try resetting your Switch's internet settings. To do this, go to "System Settings" and then "Internet." Select "Internet Settings" and then "Reset to Default Settings." This will reset your internet connection and may resolve any issues with updating the Switch. If the problem continues, you may need to perform a system update using a separate device. To do this, visit the Nintendo website and download the latest system update for the Switch. Then, using a computer or other device, transfer the update to a microSD card and insert it into the Switch. From the home screen, select "System Settings" and then "System." Select "System Update" and follow the on-screen instructions to perform the update. If all else fails, you may need to contact Nintendo customer support for assistance.