Sorry, what have you done? I don't understand.
Updating rockbox in flash does not involve any .bin files. You simply "play" a .ucl file. And you don't need to move any files before powering off.
Try holding F1 while powering up the box, does that do anything? If so, copy the Rockbox version of you choice onto it (all files), resart with F1 again and play the .ucl file to flash it.
Jörg