I'm aware of this answer: How can I replace icons of an application's executable?
And that answer: https://stackoverflow.com/q/14370553/261217
I've tried Resource Hacker, Resource Hacker FX, XN Resource Editor and several other resource editors I cannot even remember. They all are discontinued for now and they all produced broken exe file. No matter whether I use a new icon or edit an embedded one. Is there any modern tool I can use for this task, which will not produce broken exe? I'm looking for solution for Windows 7 x64, for 32-bit application.
And here is my exe: https://www.dropbox.com/s/cr3fm1yl5ukfc7c/KeysRemapper.exe?dl=0. I'm trying to replace the second icon (green letter S).

