Sega Net Dimm boards can be upgraded to firmware version 3.17 which will cover all GD-ROM games or 4.01 for the new compact flash GD-ROM replacement units.
If your Dimm board has a network port (RJ45) we can update it at a cost of £15 plus return postage, if you are an existing customer we will update it free of charge!
For all enquiries regarding Dimm board firmware updates please email info@giz10p.co.uk