You can try the more traditional method that BlackDog61 mentions, however the PC can see you have to change things up a bit, especially if you decrypted anything in the process and even if you did not then some of the patching programs fall short on modern PC games.
The "untouched original game" is itself an issue, more than consoles, as there are many forms (steam/downloadable versions, disc versions, isos from pirate groups.....). However if you can patch an installed game that is probably the more suitable method, not the easiest for end users but doable.
What did you have to edit as part of this hack? If you spent time with the exe file then that is one thing, if you edited a text file then that is potentially quite another.