For an unsecure boot the first word of the boot image should be 0x09AA. I don't see this in the output of the hex conversion utility. Is this the expected behavior? In other words, is it expected that the flash programmer somehow just knows to stick in this number automatically? It would be preferable for this to be in the hex conversion utility. (Maybe it is and I'm using the wrong option!)
I did find one bin file in the software from Spectrum Digital. The bin file itself has the 0x09AA signature though I couldn't tell if someone hacked that into the file after the fact or if it was generated that way.