To reset your Keecker (or reset to original/factory configuration), the procedure is similar to that of a smartphone.
If you wish to reset your Keecker without using the menu, here is how to do so:
1° switch on the Keecker
2° wait for the android logo to appear on the projected screen
3° repeat the operation 10 times
4° the 11th time, you can start the Keecker normally. A message will tell you that the operation worked.