Just getting back to your original message so are you able to access the interface via https, or https on port 41443?
Did you have access via http enabled before you upgraded and is it that access that isn't working?
Or is it that you just can't access the SBG via standard https?
What exactly do you see when you try to access the Brightmail Gateway? Can you ping the Control Center from where you are trying to manage it? Coulld it be an issue where you need to accept the https certificate or add an exception before you can get access?
Kevin