Fake Iron Icon

helm.png

To get a custom helmet, place a file named helm.png inside your runelite directory.
The runelite directory is located at %userprofile%\.runelite\ on Windows or ~/.runelite/ on Linux/OSX.

Runelite Directory - Windows

Press the Windows Key and R at the same time, paste in the box %userprofile%\.runelite\ and press Enter.

Runelite Directory - OSX

Open a Finder window, press CMD + Shift + G at the same time, paste in ~/.runelite/ and press Return.

Runelite Directory - Linux (XDG or Gnome)

Open a Terminal window, run cd ~/.runelite/ and then xdg-open . with XDG or gnome-open . with Gnome