Pull down Software, click on Mainframe Software to highlight it, then click on My Downloads
Enter product name JCLCheck in the Search box
Select JCLCHECK UTILITY
Select the Solutions tab
Expand JCLCheck Workload Automation MVS to display the release number
Select 12.0 to display all available PTFs
Use filter to select all r12.0 PTFs for component "JCLCheck Workload Automation" that are published since S1607, and check to select all displayed PTFs. Repeat the check on each page until all the PTFs have been selected.
Repeat the above step for component name "JCLCheck Common Component".
Click on Download Selected to go to the Download Manager.
Click on Start Download to select the download method.
The download solution cart is a ZIP file. Here's how to process this zip file: CAUNZIP procedure
Another option is to unzip the PTFs file, and upload all the .bin files to z/OS.