This is the final "verified" stage. You have two installation methods.
Here is the step-by-step process.
The most verified method involves extracting the ISO, patching its files, and rebuilding it into a package format using PC-based tools. PS3 ISO Tools: To extract/convert ISO files to folders. how to convert iso to pkg ps3 verified
This step depends on the file size.
or similar resigning tools to finalize the PKG. This is the final "verified" stage