It took me 15 min for installation to complete.
For those who are experiencing issues, I highly advice to make sure that file hash match the one on Cisco download page. I had issues where downloaded file had discrepancy. I ended up downloading from alternative computer and file MD5 hash finally matched.
On Windows you can use following cmd to check file MD5 hash: certutil -hashfile c:\temp\ise-apply-CSCwa47133_Ver_24_30_allpatches-SPA.tar.gz MD5 (of course file path is as per where you stored the file)
Linux command: md5sum ise-apply-CSCwa47133_Ver_24_30_allpatches-SPA.tar.gz MD5
