How to Install a Certificate on a Nokia E51
By Jacob Michael
, last updated March 13, 2012
Nokia E51 phones may have difficulty installing DER-encoded SSL certificates from your SAP Keystone-secured website due to a common problem with the E51 and other Symbian OS 60 phones. When attempting to access the site, the E51 Web browser may be prompted to download and install a DER-encoded authentication certificate before an error message appears; common errors include “File type unknown” or a “This site has sent an untrusted certificate” message. To fix the problem you’ll need to download the certificate file from the Keystore Administration panel onto your computer, upload it to a Web-based uploader and then download the file again with the E51 Web browser.