Stuck at <waiting for device> in recovery-flash.sh

Hi, I’m new here. Trying to flash in the binaries with a new board, but after I run
./binaries/recovery-flash.sh

The process just stopped in the middle and I’ve waited for an hour, nothing happened

downlaod address 0x16800000
Finish downloading
Flashing ptable 
< waiting for device >

Any idea how to work around? or did I miss something?

Why would you use recovery-flash.sh on a working board? Where exactly did you obtain it?