Using Image Catalog to update OS, Used Download Directory to download OS

I am trying to update my OS by using files I downloaded using the
Download Directory.

I understand about Creating an Image Catalog Adding, loading,
verifying etc.



But the results of downloading using Download Directory is a whole
bunch of zip files

And I am not sure what the process is to get the images I need for the
ADDIMGCLGE



I thought maybe each zip file would be it's own Image Catalog Entry
but there are too many of them for that to be viable.



I cannot find anything that explains the process of getting Image
Catalog Entries from all of these zip files.



Does anyone know where such a document is?

Or can anyone explain what I am supposed to do with all of these zip
files?



I am assuming I would create a directory in the IFS (to be able to Add
Image Catalog Entry)

I have a bunch of zip files on my PC.



Then I get stumped what's next?





Thanks



John