Aml-s905x-cc Wifi Network Credentials Change / Update

Hi,
Is there a way to update the Wi-Fi credentials without having to reflash the entire system? Initially, when I set up the wpa_supplicant.conf file, it went away from the boot file, and it is no longer there when I try to look for it when I put it on my PC. I added a new wpa_supplicant.conf file with the new credentials, but it does nothing; it is still with the old Wi-Fi network credentials. Any advice?