See my 2023-mar-29 reply The cert.PEM is critical to downloading the modules now. 

Now it is 2022-2023 and this solution needs a tweak. Cisco has not updated the asdm-launcher.sh for the current 7.18 + ASDM. But they DID update "run.bat".  Instead of the java launch parameters from the old linux shell command, I had to use the line...