There are three bootloader modes of a DLN-series adapter:
| Mode | Description | 
| Bootloader | This mode is activated in order to use bootloader functions. Only generic and bootloader functions are available in this mode. The Bootloader mode can be accesses either by sending the  | 
| Application | When in this mode, the DLN-series adapter functions normally. However, some bootloader functions ( | 
| Update in progress | This mode is activated automatically once the device receives the  |