Hi again and sorry for the late reply. Yes that product code seems to be the deciding factor. I suspect anyone with a product code of PF50KG-GL.AEULLAN will not be able to upgrade to v03.00.17 while those with the code PF50KG-GL.APDLLAN will be able to. It would be good to put that information in the instructions for updating the firmware. It would also be interesting to hear from others who succeeded in upgrading their projector on which product code they have. Cheers.