nx 300 checking shutter count

Even though this thread is almost two years old and much has been written about NX hacks elsewhere, Google still puts this thread on top of the answers for "nx300 shutter count". So here is the detailed answer on how to activate the DEV menu which reports such information, to help others access this information more easily. The steps are (mostly) copied from this forum (see "Disabling video time limit"). Feel free to verify the steps from other web pages about "nx300 hack". Of course, do not play around with the many options of the DEV menu if you don't know what you are doing.

1) Create a text file as follows:
  file name: nx_dev.adj
  file content: "smart_camera" - NB no carriage return, no nothing except the string (NB excluding quotes). File length should be exactly 12 bytes.
2) Place this file on the root of an SD card and put the card in your camera.
3) Power on the camera. Make sure camera is on Auto.
4) Press, in succession: down, OK, up, OK, right, press and keep pressed the exposure compensation button, press and release OK, and finally release the exposure compensation button.
Now you should see the new menu on the screen. Go to "3. Adjustment Control" (press OK) and from there, to "(6) Adjust Results" (Press OK). There you should see "Shutter Release Count:" with the number of actuations.
To close the DEV menu, just press the MENU button a few times.

I've just tested those steps both on my NX300 and NX500 and read the actual number of actuations.

Best,
Emanuele