I am study some sentinel issue...
and I find in 8.3/8,4 and latest 8.5 official document , all they provide a section about "To upgrade the operating system and configure the appliance"
it provide a step like below:
Download the SLES 12 SPX installer and the post-upgrade utility from the Micro Focus Patch
Finder website. For Sentinel HA, download the SLES 12 SPX HA file as well.
the Micro Focus Patch Finder link still use old link...so partner and customer could not download post-upgrade utility.
if sentinel team did not provide this utility or need open case to request..please modify this section to let partner or customer understand they could or could not download this utility.
Wencheng