[ixp1200] Question of enp-2505

Hello, Currently, my problem is: When the board entered cygmon, I typed "go" command, then the minicom screen show below information: *********************** cygmon>go cygmon_handle_exception() monitor_loop return=0 Returned from breakpoint Waiting for host based downlad Press space bar to abort host download mode.... Press space bar to abort host download mode....