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:
Online mode
The local certificate is applied for, obtained, and downloaded to the CF card of the device using CMPv2.
Offline mode
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.