- Usually CLI as a term is used for remote access by default, not the console , for that to work the AP must be connected to a controller that allows remote access to it,  M.

    @Simon Blomqvist   - In contrast to your remarks and referring to the link you posted , the differences in timing for holding the hold button are clearly explained :  >...            (start reading from : To use the mode button, press, and keep p...

    - You may then try the command from the console , if t there is no CLI available  on the console too , I would opt for 20 secs and see where you are in the context of your original problem (it's supposed to be a soft reset)  , because 30 secs and...

     - Actually if we return to the original problem (and for safety) ; could you try                  capwap ap erase all            on the AP first  and check if that help for honoring DHCP option 43 (will certainly not harm the image)   M.

             - Confirmed , you will never  loose   (corrected)  the image on the AP when resetting ,   M.