edc16 to write it after you have fixed via the serial port before you remove the e2p and doing a partial,and after you is to write ,or bdm (nothing bootmode)
edc15 after it is nailed , you can' do bootmode.. or unsolder the flash 29f200/400/800 and write it with a programmer type willem ,or scod partial/total e2p always dissaldandola and riprogrammandola and then writing it to the flash with the serial.