2. Open the microSD slot cover located at the bottom of your RE.
You'll see a small button located at
the top left corner of the microSD
slot.
3. Press and hold the Shutter button, and at the same time, push the
tip of a small bent paperclip onto the Reset button.
4. Release the Reset button.
5. Continue to press and hold the Shutter button until you hear a
startup sound.
A startup sound indicates that factory reset is complete.
Reset 51