I was told by Dell Support that if you open a ticket they can help you run the SAE upgrade to Secure Connect Gateway V5 if you have a large number of devices but they recommend just downloading a new appliance and adding your devices to it. Support also confirmed that to connect to the new iDrac 9 FW you need to upgrade for the credentials to work properly. You can download SCG here: [URL] User guide here: <ADMIN NOTE: Broken link has been removed from this post by Dell> Just sharing what they told me over the phone.  Good luck.
I'm having some problems with SAE.  I am plagued with the same issues reported by others that "SupportAssist Enterprise is unable to connect to the device using the provided credentials. | Update the credentials of the device, if possible."  Yes, the credentials are correct and had been working for awhile and have not changed.  This only seems to plague our newer iDrac9 servers. I was hoping V5 would maybe fix this.  I get the banner text to update to V5.  When I click download now I get the spinning boxes for about a minute and then they go away.  The banner never prompts to apply the upgrade.  I have rebooted the appliance and passed the network connectivity tests.  Why does this upgrade not proceed and when it does apply will it fix our credential problems with new version of iDrac?
Will not update to Version 5.00.00.10 of SupportAssist and valid credentials do 
not work