MAKE SURE YOU HAVE PODCAT'S TFH EXE !Place installer in the main HOI3 directory (With all the vanilla exe files)
Double click (run as administrator)
The mod installer will create a new folder for black ice in tfh/mods
Install the Hotfix in the same place as 4.2 main files.
Only English Language version is supported
Install in the same place as the main 4.2 files