IGEL OS 10.05.700 IGEL OS Articles Certificates Deploying Trusted Root Certificates Current: Installing Certificates Manually PDF Download PDF Download page Installing Certificates Manually. Current page Include child pages All pages Installing Certificates Manually Use the Firefox Certificate Manager in order to install web browser certificates; see Installing Web Browser Certificates.For Java Runtime Environment certificates, use the Java Manager from the IGEL Setup; see Installing JRE Certificates.Also a USB flash drive can be used for the manual import. ×