Requirement：A9LH or other exploit
With A9LH exploit for example in this tutorial.
Decompress both of “BootNTR.cia” and “ntr.bin” to the SD card of 3DS/2DS console.
2） Direct boot without EZR mode, Use the FBI or other CIA installation tools to install BootNTR.
After the above steps you can start using the cheat function with EZR.
Search and download the cheat files.
usually the cheat file should be XXXXX.plg
For example Super Mario Bros2（Japanese version）：
1）Create a new folder named “plugin”
2）Create a new folder named “000400000007AD00” in folder “plugin”
3）Copy the cheat file in folder “000400000007AD00”
4）Put the SD card back in the 3DS
5）Plug EZR into 3DS and press down+power into EZR model.
Choose the icon “small rocket”
Press A to launch the game and the upper screen will splash a green screen, it means the cheat has been loaded successfully. Some cheats need to press X + Y in game should show the menu and toggle the cheat.