when you try to upload your firmware Dave it says,
erasing all pages be patient,
erase ok
then it lists this load off errors on seperate lines,
fatal error out of sync unable to send address at page6
page7
page8
page9
page10
page11
page12
page13
page write check sum error at page 14
fatal error out of sync unable to send address to page 15
page16
page17
page18
page19
page20
error detected ecu left in boot mode
then it constantly displays ecu has not been detected on com port 1