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Knowledge Base > TR-069 > How do I update an expired TR-069 related certificate?

How do I update an expired TR-069 related certificate?

By default CDRouter uses the SSL certificate acs.qacafe.com.pem for all ACS sessions requiring HTTPS. This certificate is located in the following directory on your CDRouter Linux host: 

   /usr/share/doc/cdrouter/acs.qacafe.com.pem
Likewise, the root CA certificate is located here: 
   /usr/share/doc/cdrouter/acs.qacafe.com-ca.pem

The default certificate installed with CDRouter 3.7 or earlier expired on June 9, 2007. The default certificate can be updated by either upgrading to the latest version of CDRouter, available here, or downloading and installing this updated default SSL certificate. An updated root CA certificate is also available here. Once downloaded, simply overwrite the existing default and CA certificates in the directory above.

Note that CDRouter 3.8 and later require both a root CA and an intermediate CA for acs.qacafe.com.pem. More information can be found here: What root certificate must be installed to verify acs.qacafe.com.pem?