Or you could just use Dreamup
1. Turn on DHCP in the communications page and note down the IP address your DB was assigned.
2. Connect your box to your computer using the Serial lead and also connect an ethernet (Network) lead to your dreambox and router.
3. Start Dreamup.
4. Tick the box that says use network
5. Fill in your pcs and dreambox ip addresses
6. Click on connect.
7. Switch on Dreambox & wait for connection confirmation
8. Click on Flash and select the nfi image you want to send to the box
The program will tell you when its finished
I can't say i have had any problems flashing my 600 using this method.
You can just use the serial lead although it takes a lot longer to complete the process. Just make sure you untick the
Use network tab
Nano