These instructions are outdated, and as shantigilbert said can easily cause EmuElec versioning issues. If you use the latest EmuELEC version (4.3 or more) you can do the following:
- SSH into the device.
- Find and edit the file: /storage/.config/emulationstation/es_features.cfg
- Any Emulator core you wish to have native resolution option: modify the features attribute of the core element of xml like so and add to the values “nativevideo”.
For example for N64 from:
<core name="mupen64plus_next" features="netplay, rewind, autosave, cheevos" />
to
<core name="mupen64plus_next" features="netplay, rewind, autosave, cheevos, nativevideo" />
- Save and exit.
- Restart EmulationStation, then in the gamelist you changed press “select” >> Advanced system options, and the native video option should be present.