1. Copy new certificate file and ssh in

2. Look at apache config file and find a path of the certificate file that you need to update

3. Once you have the path; close the config file and > cd to the dir that contains the certificate file (.ert)

4. Rename the current file and move the new cert file (make sure the file is named exactly as the previous certificate file).

sudo mv [CERT].crt BACKUP[CERT].crt
sudo mv [NEWCERT].crt [CERT].crt

5. Restart apache

sudo /usr/sbin/apache configtest
sudo /usr/sbin/apache restart