Follow thse steps to uninstall a fix pack
During uninstall, the fix pack utility appends messages to the ctgfix.log file. The log file contains details of each file that is restored by the fix pack, and details of any errors. Further information about error messages is available in text file <install_path>/ctgfix/ctgfix.hlp. After uninstalling the fix pack, the CICS Transaction Gateway version can be checked by issuing the command: cicscli -v