Changing the default password is crucial for the security of any device before it connects to a network, especially in sensitive environments such as healthcare. It helps prevent unauthorized access to the device. Keeping the default password is a common security risk, as default passwords are easily obtainable by malicious parties. Updating the firmware may contain important security patches but does not directly secure the device's access credentials. Enabling Bluetooth does not secure a device on a wireless network and can pose additional security risks if not managed properly.