The instructions talk about importing via GUI, but lower end platforms like the F90D don’t have that option.
Instead, certificates must be imported via a copy/paste job in the CLI
FWF90D5318062277 # config vpn certificate local FWF90D5318062277 (local) # edit MyNewCert FWF90D5318062277 (MyNewCert) # set private-key "-----BEGIN RSA PRIVATE KEY-----..." FWF90D5318062277 (MyNewCert) # set certificate "-----BEGIN CERTIFICATE-----..." FWF90D5318062277 (MyNewCert) # end
The certificate can then be set in the GUI.