Does any one know where I could obtain this rom from? I have only been able to find a bin file which is no good I have even changed the file extension to .rom and still no luck?
Which ROM do you have in mind?
The Picasso IV stored its firmware (both parts) in a flash ROM, the contents of which could be reprogrammed by a specific tool.
The first part (the bootstrap loader) could not be reprogrammed without a developer tool which was not available to customers, if I remember correctly.
The second part (which contained the driver software for the flicker fixer and the hardware add-ons) could be reprogrammed using a tool designed specifically for this purpose. If I remember correctly, the name of the firmware file was irrelevant.