Results 1 to 4 of 4
Like Tree4Likes
  • 2 Post By hashima
  • 2 Post By mjumrani

Thread: Why a copied sd-card is not working in your device.

  1. #1
    rotop is offline Sergeant
    Join Date
    Jun 2010
    Posts
    51
    Thanks
    19
    Thanked 12 Times in 7 Posts

    Why a copied sd-card is not working in your device.

    Why a copy of an original sd-card does not work in another device?
    Start study the datasheet of a sd-card and you will find out that thera are
    6 registers located on the sd-card in a protected area.
    One register is the CID = Card identification register (128-bit)
    Page 18:
    The referred register area is about 1% in size of the sd-card and is filled with data during
    the last check and formatting on the 'factory floor'.
    Untill today all vendors of sd-cards have not made public how to reach and change this data.
    Even a bit to bit image is missing this data !!
    The CID contains specific vendor information o.a.
    MDT: Manufacturing date (12-bit, Month, Year)
    and other 5 unique fabrication data.
    For navigation sd-cards, most important is the:
    PSN = Product Serial Number (32-bit, Uniquely assigned integer)
    Here an example:
    Raw CID Bytes: 94-00-73-A2-7D-7D-10-30-30-30-30-30-4D-53-1B-00
    Product Serial Number: 7d7da273 = 2105385587 (10 digit in decimal)
    TomTom, but also Garmin use this number to make a sd-card unique.
    The navigation software reads an checks this number in combination with the device unique ID
    TomTom writes this number, encrypted, as the SDcardSerial in the ttgo.bif file
    for TomTom's Carminat devices.
    Attached ReadCID.zip This a 'read CID only' program.
    The ReadCID.exe application will only work if the memory card reader is attached
    directly to the PCI bus of your laptop. No USB type of memory card reader will have the capability to
    access the CID parameters through the USB API.

    Another PSN reader for WinCE or Windows Mobile devices:
    Card_ID.exe which can be downloaded here:
    http://rapidshare.com/files/141860398/Card_ID.exe.html
    Attached Files Attached Files
    Last edited by rotop; 19th January 2011 at 11:26.

  2. The Following User Says Thank You to rotop For This Useful Post:


  3. #2
    eldelperfume is offline Corporal
    Join Date
    Sep 2011
    Posts
    21
    Thanks
    28
    Thanked 11 Times in 5 Posts

    Re: Why a copied sd-card is not working in your device.

    Quote Originally Posted by rotop View Post
    Why a copy of an original sd-card does not work in another device?
    Start study the datasheet of a sd-card and you will find out that thera are
    6 registers located on the sd-card in a protected area.
    One register is the CID = Card identification register (128-bit)
    Page 18:
    The referred register area is about 1% in size of the sd-card and is filled with data during
    the last check and formatting on the 'factory floor'.
    Untill today all vendors of sd-cards have not made public how to reach and change this data.
    Even a bit to bit image is missing this data !!
    The CID contains specific vendor information o.a.
    MDT: Manufacturing date (12-bit, Month, Year)
    and other 5 unique fabrication data.
    For navigation sd-cards, most important is the:
    PSN = Product Serial Number (32-bit, Uniquely assigned integer)
    Here an example:
    Raw CID Bytes: 94-00-73-A2-7D-7D-10-30-30-30-30-30-4D-53-1B-00
    Product Serial Number: 7d7da273 = 2105385587 (10 digit in decimal)
    TomTom, but also Garmin use this number to make a sd-card unique.
    The navigation software reads an checks this number in combination with the device unique ID
    TomTom writes this number, encrypted, as the SDcardSerial in the ttgo.bif file
    for TomTom's Carminat devices.
    Attached ReadCID.zip This a 'read CID only' program.
    The ReadCID.exe application will only work if the memory card reader is attached
    directly to the PCI bus of your laptop. No USB type of memory card reader will have the capability to
    access the CID parameters through the USB API.

    Another PSN reader for WinCE or Windows Mobile devices:
    Card_ID.exe which can be downloaded here:
    http://rapidshare.com/files/141860398/Card_ID.exe.html
    por favor podrias resubir el arcchivo readcid.zip,gracias

  4. #3
    hashima's Avatar
    hashima is offline Command Sergeant Major
    Join Date
    Oct 2010
    Posts
    211
    Thanks
    54
    Thanked 42 Times in 23 Posts

    Re: Why a copied sd-card is not working in your device.

    aquí es.....
    Attached Files Attached Files
    chelul2007 and Mark00 like this.

  5. The Following 2 Users Say Thank You to hashima For This Useful Post:


  6. #4
    mjumrani is offline Private
    Join Date
    Dec 2011
    Posts
    5
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Why a copied sd-card is not working in your device.

    Quote Originally Posted by hashima View Post
    aquí es.....
    Cannot download the file. The browser shows a blank screen when I click on the link
    hydra and chelul2007 like this.

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •