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How to read Volvo HF CD radio code from 24C01 EEPROM file?

serwis11 5697 9
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How do I read the security code from a Volvo HF CD radio EEPROM dump with a 24C01 chip?

Read the EEPROM as a 24C16, not as a 24C01, even if the chip is marked 01 [#14403693] [#14403766] [#14403847] [#14403957] One reply specifically says to reread the memory as 24C16 [#14403766] After doing that, check whether code 6358 matches [#14403882] The original poster then confirmed that reading it as 24C16 solved the issue [#14403957]
AI summary based on the discussion. May contain errors.
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  • #1 14402513
    serwis11
    Level 12  
    Posts: 81
    Rate: 12
    Hello
    The radio worked in a truck unfortunately asking for a code after replacing the batteries.
    I am asking for help in reading the code from the batch.
    Input loaded with the easy pro 90b programmer.
    Radio Volvo cd memory 24c01.
    Attachments:
    • How to read Volvo HF CD radio code from 24C01 EEPROM file? vo.jpg (2.34 MB) You must be logged in to download this attachment.
    • volvo_cd_bin.bin (128 Bytes) You must be logged in to download this attachment.
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  • #2 14403520
    serwis11
    Level 12  
    Posts: 81
    Rate: 12
    Maybe someone has some input to this radio.

    Added after 22 [minutes]:

    Interestingly, after desoldering the 24c01 souvenir, the radio still asks for the code.
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  • #3 14403611
    Rolis1
    Level 14  
    Posts: 129
    Help: 10
    Rate: 47
    we give as much as possible of the equipment data, in particular the brand, type, pn
    ;)
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  • #4 14403655
    serwis11
    Level 12  
    Posts: 81
    Rate: 12
    That's all I can find on it and the name VOLVO.
    Attachments:
    • How to read Volvo HF CD radio code from 24C01 EEPROM file? vol.jpg (2.53 MB) You must be logged in to download this attachment.
  • Helpful post
    #5 14403693
    curdeballans
    Level 30  
    Posts: 908
    Help: 269
    Rate: 453
    It is worth looking for the memory of 24c16 eeprom. How to read Volvo HF CD radio code from 24C01 EEPROM file?
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  • #6 14403734
    serwis11
    Level 12  
    Posts: 81
    Rate: 12
    Unfortunately, there is only eeprom 24c01
  • Helpful post
    #7 14403766
    curdeballans
    Level 30  
    Posts: 908
    Help: 269
    Rate: 453
    Or maybe read it as 24c16.
  • #8 14403847
    serwis11
    Level 12  
    Posts: 81
    Rate: 12
    Read as 24c16.
    Attachments:
    • 24c16.bin (2 KB) You must be logged in to download this attachment.
  • Helpful post
    #9 14403882
    curdeballans
    Level 30  
    Posts: 908
    Help: 269
    Rate: 453
    Now check if the 6358 code matches?
  • #10 14403957
    serwis11
    Level 12  
    Posts: 81
    Rate: 12
    Everything is great thanks for help 24c16.
    Although it is written in black and white on it 01.
    Attachments:
    • 24c16.bin (2 KB) You must be logged in to download this attachment.
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Topic summary

✨ The discussion revolves around a Volvo radio that requires a code after battery replacement. The user seeks assistance in reading the code from the radio's memory, specifically a 24c01 EEPROM. Responses suggest checking if the memory can be read as a 24c16 EEPROM instead, which ultimately leads to a successful code retrieval. Despite the EEPROM being labeled as 24c01, it was confirmed that reading it as 24c16 yielded the correct code.
AI summary based on the discussion. May contain errors.
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