I have a Samsung S3 with Android 4.04 and to get on my WiFi at work I need to install a certificate .p12 file. So, I navigate to "Security and lock screen"-->"Install from device storage." BUT instead of giving me a field to specify the location of my cert ( on /mnt/extSdCard ) it just says "No certificate found in USB storage."
There are some USB devices ( called "UsbDriveA" through "UsbDriveF" in my /mnt folder) but I cannot copy the cert onto them because they are read-only.
So, how do I get this certificate imported? I tried using "Android Certificate Installer" from the app store and that didn't work for me either: it launches a browser and the browser fails to prompt for the cert password.