Well, if you check whether they really uninstalled it, you can run a syscheck. It will show which IOS' are installed.
It is not clear to me, which program you were using. You mention an installer and IOS236, which makes me suspect you were installing cIOSX rev20. However, if you want to reinstall it, just run the program again and install it.
Deleting the HBC save file is useless. It has nothing to do with it.