nRF Connect Cellular Monitor v1.0.4 or later

Managing modem credentials

You can store and update modem credentials, such as keys or certificates, manually by sending Credential storage management %CMNG commands to the modem. The certificate manager simplifies this process by offering a graphical user interface for updating credentials.

Before you can update the credentials stored by the modem, you must put the modem into the offline state by sending the AT+CFUN=4 AT command.

Each set of keys and certificates that is stored in the modem is identified by a security tag. This means that all related credentials share the same security tag. Send the AT%CMNG=1 command in the terminal view to display a list of all certificates that are stored on your device. If you have added your device in nRF Cloud, you should see a Certificate Authority (CA) certificate, a client certificate, and a private key with security tag 16842753 which is the security tag for nRF Connect for Cloud credentials.

The credentials can be managed in the following ways.