[NAME] [NAME]  Could you try this KB article? [URL] this is for v4. Hope it helps!
Our Support Assist Enterprise appliance prompted to upgrade from 4.00.05.30 to 5.00.00.10 (which I assume is Secure Connect Gateway). However, after downloading successfully, any attempt to use the 'Update Now' link generates an almost immediate response: Update Failed There was an issue updating SupportAssist. Please try again. I've rebooted the appliance but the results are the same. I looked through lots that seemed like they might contain useful information, but nothing is being recorded during the 'Update Now' clicks. Any help would be appreciate. Thank you.
5.00.00.10 Upgrade Failure