You could try my guide to this problem
Repairing NO CA error with Dreamup_1_3_3_3.exe
Turn off the Dreambox
Preparation
Detach all cables from the Dreambox
- With 9-way to 9-way
Attach the D type 9-way null modem cable to the back of the Dreambox
Attach the other 9-way to the RS-232 port on the PC
- With 9-way to USB
Attach the Serial to USB cable to the other end.
Plug the USB cable into your Laptop/PC
Plug the null modem end into the Dreambox
Plug in an Ethernet cable into the router and the Dreambox. A network connection is much faster. It takes about 3 minutes compared to 90 minutes to flash.
Navigate to the Satellite Stuff folder on the PC and choose “Dreamup_1_3_3_3.exe”
Launch the program
If connecting via the serial port
Uncheck the “Use Network” box
The Serial Port works on COM1
If connecting via the ethernet port
Check the “Use Network” box
Either port
Press “
Connect”
The program will ask you to connect the box
Plug in the power cable
A Green progress bar will start to move
A message displays “Updating Flash Loader”
When it has finished the message displays “Box is in networked …. Mode”
Flash button will become active
Press “
Flash”
Navigate to the Satellite Stuff folder on the PC and choose “Secondstage_dm800_84.nfi”
Press OK
Wait for a few seconds
Message displays “OK Flash copy succeeded”
Press “
Disconnect”
Remove power lead
If connected via the serial port
You should be able to use the network now
Change Local IP = 192.168.1.10 (The IP address of the PC)
Change Remote IP (box) to the IP that is on the front of the STB
Change Select One = 192.168.1.10 (The IP address of the PC
Check the “Use Network” box
Press “
Connect”
The program will ask you to connect the box
Plug in the power cable
A Green progress bar will start to move
A message displays “Updating Flash Loader”
When it has finished the message displays “Box is in networked …. Mode”
Flash button will become active
Press “
Flash”
Navigate to the Satellite Stuff folder on the PC and choose your Image
e.g. “
merlin-3-dm800-02-16-ramiMAHER-e3.nfi”
Press OK - Wait for a few minutes
Message displays “Calculating Checksum, Updating to box, Box is flashing from its memory.
Finally “Box was flashed successfully”.
Just to make sure
Press “
Disconnect”
Remove power lead.
Plug power lead back in.
Front panel should start to boot
If it displays “No CA error” again try another image file.