After a certificate is generated by the CA, the device needs to download the CA certificate and local certificate from the CA.
The device can download the certificate through the following modes:
The local certificate is applied for, obtained, and downloaded to the CF card of the device using CMPv2.
After the CA certificate and local certificate are obtained through FTP, a disk, or a mail, the certificates are downloaded to the CF card on the device.
After obtaining certificates, install them on the device. Then the certificates take effect.