Self signed certificate

If the webdav server runs using a self-signed certificate (e.g. because it is only running in the local network), photOS needs to be aware that it can trust this special key. Copy the certificate file in PEM format on the device:

> scp your-self-signed-certificate.pem root@photos-xxxxxxxx:/data/photoframe/conf/webdav_cert.pem

This certificate will be used to verify the webdav server on next sync.

If you get errors like "can't read server certificate" the file permissions of the certificate file needs to be changed:

> chmod a+r /data/photoframe/conf/webdav_cert.pem