Table of Contents

Docomo Mobile SD Card

Check the dumping hardware overview for a list of known preservation hardware.

If you need help, please come chat with us on the VGPC or No-Intro discord servers.

Introduction

In order to extract all data properly from an SD card with Docomo content, we need some keys located in a hidden partition of the card, detectable only by some specific SD card readers.

Methods

Preliminary Steps

  1. Verify Compatibility of SD Card Reader

Extraction Tools

  1. CPRMTool.exe

Verify Compatibility of SD Card Reader

  1. Open the “Device Manager”.
  2. The SD reader details can be found either under the “Memory Technology Devices” or “Universal Serial Bus controllers”.
  3. Select the device you want to investigate: if you’re looking under USB controllers then you should look for a “Realtek USB 2.0 Card Reader”. If you are instead looking for the device under “Memory Technology Devices” you will have to look for a “Realtek PCIE CardReader”.
  4. Right click the device and select the “Properties” option like in the image on the right.
  5. Select the “Details” option, then in the window with the arrow, select “Hardware IDs”
  6. If the values written in the window below are either one of these 3 then your device is compatible.
    VID_0BDA&PID_0129
VID_0BDA&PID_0139
VID_0BDA&PID_0140
  7. Now that you know if your device is compatible, we can proceed with dumping the SD contents.

CPRMTool.exe

  1. Install this driver if not installed already, open the file and complete the installation.
  2. Install the CPRMTool.exe, available here.
  3. Insert the SD card in the driver
  4. Open your computer terminal AS ADMINISTRATOR
  5. Lookup the path to the SD card block device using the following command:
    wmic diskdrive list brief

    You need one corresponding to the SD card, starting with this line 

    \\.\PHYSICALDRIVE

    You need to get the DeviceID corresponding to the SD card, save this somewhere, as you will use it soon.

  6. Now change your current directory to the one where the CPRMTool.exe is located (if you just downloaded it you should probably just use the cd Downloads command).
  7. Now run these commands, but change the \\.\PHYSICALDRIVE1 part down below with the DeviceID you found before.
    .\CPRMTool.exe -dumpmid -card \\.\PHYSICALDRIVE1 -mkbid 11 -out mid.bin
.\CPRMTool.exe -dumpmkb -card \\.\PHYSICALDRIVE1 -mkbid 11 -out mkb11.bin
.\CPRMTool.exe -dumppa -card \\.\PHYSICALDRIVE1 -mkbid 11 -out pa.bin -skout pa_sk.bin

NOTE: if the last command ends up with an error after reading a good bunch of sectors - that's normal.