Opel CD30, CD30MP3 Grundig decode guide

**bogege** · 19th March, 2025, 05:14 PM

Hi,code is 3637

**WojciechL** · 19th March, 2025, 07:22 PM

Hello guys . I buy a new display to my Vectra c . Put news display and buum . Display safe on screen. I have op-com but last car owner didnt give me radio code.

Blaupunkt 453116246 - opel ehu 2a AUX
GM003089674950
No: 13 253 511
7 645 104 310

**bogege** · 19th March, 2025, 09:25 PM

~Hi,read dump and post here for the code!

**corsanewbie** · 23rd March, 2025, 06:04 PM

code 3637 is not working

I'll send the dump again. the radio is delphi from 05.04.2012

**bogege** · 23rd March, 2025, 06:18 PM

Originally Posted by corsanewbie

code 3637 is not working

I'll send the dump again. the radio is delphi from 05.04.2012

Hi, I don't know what you're doing with this code, but it's 100% correct for your dump!!
You can wait for another opinion!

**samuelfranko** · 23rd March, 2025, 07:32 PM

Hi everyone. I have same problem. I checked all the stuff here, but I dont know what to do now. I bought Opel Meriva without the radio. Then, I bought a radio from marketplace, without code. I dont have any carpass in my car. So, I extracted .bin and .hex files from radio (eeprom 95640) and from display (eeprom93c56).
I also tried to read .bin file from radio by OSCR and it showed me that pin is 1571. But now, I have two problems

1. I dont know if the pin extracted from .bin by OSCR is correct
2. If the pin is correct, how I can pair radio with display?

Note. I dont have op-com.

Radio info:
Model: Blaupunkt CD 30 MP3
Serial: GM003089695133
Code: 1571 (maybe

)

Thank you so much for all advices, Im truly sad now....

Here are the extracted .bin and .hex files. They are the same, but in different types of files.meriva_eeproms.zip

**bogege** · 23rd March, 2025, 08:33 PM

Originally Posted by samuelfranko

Hi everyone. I have same problem. I checked all the stuff here, but I dont know what to do now. I bought Opel Meriva without the radio. Then, I bought a radio from marketplace, without code. I dont have any carpass in my car. So, I extracted .bin and .hex files from radio (eeprom 95640) and from display (eeprom93c56).
I also tried to read .bin file from radio by OSCR and it showed me that pin is 1571. But now, I have two problems

1. I dont know if the pin extracted from .bin by OSCR is correct
2. If the pin is correct, how I can pair radio with display?

Note. I dont have op-com.

Radio info:
Model: Blaupunkt CD 30 MP3
Serial: GM003089695133
Code: 1571 (maybe

)

Thank you so much for all advices, Im truly sad now....

Here are the extracted .bin and .hex files. They are the same, but in different types of files.meriva_eeproms.zip

The files from the display are not good for me!! Read again as 8bit and save in bin. format!
You don't need the code of the new radio!

**samuelfranko** · 23rd March, 2025, 09:20 PM

I will try to read that eeprom from display tommorow, because If i read it with elnec SmartProg2 with their program, I can only extract the first 128 bits, and they are empty. The others addresses are blocked, maybe with BitLocker and if I save the .bin file, I cant see the other adresses and informations. Maybe I need to solder the eeprom down from the PCB...

**corsanewbie** · 24th March, 2025, 02:02 PM

Originally Posted by bogege

Hi, I don't know what you're doing with this code, but it's 100% correct for your dump!!
You can wait for another opinion!

I have both display and radio. I connected them in the car and using opcom I tried deactivate theft protection with that code. unfortunately didn't work. I can confirm that another radio I tried worked with this setup.

my goal was to pair my old cd30mp3 with the new display (paired to a malfunctioning radio, the one I send the dump). I wanted to remove code from both of the radio/display and them swap them.
maybe there is another way?

**corsanewbie** · 25th March, 2025, 04:12 PM

Sorry for writing again. I'm thinking that there is a way to change the security code of the radio without using the opcom/car.

Here I have loaded two files (new dump and old dump). I would like to change the old radio code into the code of the new radio (which you said was 3637)
Would it be possible?

**bogege** · 25th March, 2025, 05:13 PM

Originally Posted by corsanewbie

Sorry for writing again. I'm thinking that there is a way to change the security code of the radio without using the opcom/car.

Here I have loaded two files (new dump and old dump). I would like to change the old radio code into the code of the new radio (which you said was 3637)
Would it be possible?

Hello, here is the file you want with the changed code.
But, I think that won't happen!
Because, if the old radio is original for this car, then its code, which is 7591, is the car's password, which is also used by other modules in the car besides the radio and the display!
In my opinion, you should use the old radio without changes and look for a way to change the code in the new display to 7591.
But I'm not sure if it will happen without an opcom!

**corsanewbie** · 25th March, 2025, 05:37 PM

Originally Posted by bogege

Hello, here is the file you want with the changed code.
But, I think that won't happen!
Because, if the old radio is original for this car, then its code, which is 7591, is the car's password, which is also used by other modules in the car besides the radio and the display!
In my opinion, you should use the old radio without changes and look for a way to change the code in the new display to 7591.
But I'm not sure if it will happen without an opcom!

thank you for your help.
why do you think putting this dump in the old radio is bad? I tried putting the new radio alongside the new display in the car and everything worked. my problem is that the new radio has a broken cd reader.
I had some difficulties in reading the dump from the gid so that's why I tried this way.
but if you think it is not wise to write the eeprom I will try to read again the gid dump.

anyway I have an opcom. the fact is: when I use 7591 with old things I can deactivate theft protection.
but when I try to deactivate the new pair using the 3637 code it doesn't work. any idea of this problem?

**bogege** · 25th March, 2025, 06:13 PM

Originally Posted by corsanewbie

thank you for your help.
why do you think putting this dump in the old radio is bad? I tried putting the new radio alongside the new display in the car and everything worked. my problem is that the new radio has a broken cd reader.
I had some difficulties in reading the dump from the gid so that's why I tried this way.
but if you think it is not wise to write the eeprom I will try to read again the gid dump.

anyway I have an opcom. the fact is: when I use 7591 with old things I can deactivate theft protection.
but when I try to deactivate the new pair using the 3637 code it doesn't work. any idea of this problem?

Whether it is reasonable or not, I don't know.
Someone should try and share the result so we can find out if it works.
Regarding your second question, I think this is normal.
For these models, the display and radio should be unregistered while they are in their original car so that it is easy to pair them with the new car later!
If you have time, wait for member Shoting.
He knows more about how to do it exactly.
He will be on leave for about 20 more days.

**samuelfranko** · 27th March, 2025, 08:59 AM

Originally Posted by bogege

The files from the display are not good for me!! Read again as 8bit and save in bin. format!
You don't need the code of the new radio!

Hello, I solder down the eeprom from display and read it by SmartProg2 by Elnec. This is what i got from display eeprom.

meriva_radio_display_vycinovana.rar

**bogege** · 27th March, 2025, 05:22 PM

Originally Posted by samuelfranko

Hello, I solder down the eeprom from display and read it by SmartProg2 by Elnec. This is what i got from display eeprom.

meriva_radio_display_vycinovana.rar

Hi, the code from the display is 5492, this is also the car password, which you should use when pairing the radio with the display via opcom .
Below is your dump set to virgin, use it for radio!...........