I'm answering my own question, but I hope this is relevant for other users. The "script" is actually the "Isilon InsightIQ Installation File for Linux Computers". for the 4.1.2 the filename is "install-insightiq-4.1.2.7.sh" I used WinSCP to get the file onto the appliance, and putty to start the upgrade. My server is not able to get onto internet so everything is done "offline". No restart of the appliance necessary in my case.  Here is the file. (requires login to EMC Online Support) [URL]
Trying to upgrade from InsightIQ 4.1.1.3 to InsightIQ 4.1.2.7 The Installation guide say: " Locate the InsightIQ installation script from [URL] search/?text=InsightIQ&resource=DOWN&facetProductId=15208 in .sh format. " I have had no luck in finding any .sh file.  Anyone have this file?
InsightIQ 4.1.1.3 to 4.1.2