How to Use GM Tech 2 Scanner to Upgrade Opel CD30MP3 Radio to CD40

One of our customers has successfully updated his Opel/Vauxhall CD30/CD30 MP3 to CDC40 recently using the GM Tech 2 Scanner bought from obd2eshop. He did this because CD40 had a better sound output compared to CD30/CD30 MP3.  Here obd2eshop would like to share his guide and help Opel owners to have advanced Audio display:

Tools you will need:

GM Tech2 Diagnostic Tool Opel 32MB card or OP-COM CAN OBD diagnostic interface

Blaupunkt car CDC40

How to:

Turn on the dashboard

Connect Tech2 scanner to Opel/ Vauxhall  OBD port by using the OBD2 cable

Turn ignition ON

Disable below anti-theft protection modules with Tech2 scanner by following steps

gm-tech2-opel-reflash-1 gm-tech2-opel-reflash-2

EHU -> Code Index -> 001_02


Enable the anti-theft protection:




Turn off the dash and disconnect Tech2 scanner

Remove the CD30 / CD30 mp3 using the appropriate accessories. You will need to disconnect the antenna wire and the connector big loosening the locking device that engages in the lower part of the connector

Replace the original antenna with the appropriate terminal for receiving digital signals:

Unscrew the existing antenna

Disconnect the sky (just ask for details)

Unscrew the nut holding the antenna base

To avoid replacing the entire cable I suggest you remove it from the antenna and then connect the old to the new

Connect to your CDC40 connecting the connector and the antenna wire.

Enter the CDC40 in his quarters, making sure that the connector wire remains free.

Turn the ignition on.

The CDC40 will turn on and begin to “bip”, the display will alternate “Display SAFE”, “Radio SAFE” and “UHP SAFE”.

Program with the Tech2 scan tool EHU and set all the values to “Not Present”

GID Present

UHP Present

ECC Present

DAB Present

EHU Present

Program with the Tech2:

EHU -> Code Index -> 001_02

Enable the protection (anti-theft) of:




The radio will reboot and the screen will show “headunit protection”.

Press and hold the Eject button on the CD until you hear a ratcheting noise. This step serves to unlock the transport lock.