You can go to the 9.X code but it will convert your NATing to the new Natting style. You will need to review your natting and nat exempt and make sure all OK
Younes
I did failed PCI scan with sweet32 bug
Here is what I did for my ASA 5516x to pass the PCI scan for the sweet32 ; as described on CVE the Sweet32 vulnerability is on TLS using small size block cipher of 64 bit size; so I have forced the asa to us...