I don't know exactly why this happens, i only know this happens sometimes.
Then the ecu has installed a software to which the program does not find a CAFD.
After you flash the ecu it gets a new software (+ swfl) and the program should find the properly CAFD.
For flashing you need the Full psdzdata:
https://mega.nz/#!QlB2lKBS!HtPXRCLxx...nsn1WX14r2Wx0c
For this ecu you don't need a charger because the flash process only takes 2-3min.
But i still got another idea.
Is this the only error message when you try to detect the CAFD or is there another message?
Do you know from which car series the ecu comes from?
Maybe you can try this again what I wrote here:
https://f30.bimmerpost.com/forums/sh...&postcount=544