Docomo Phones by Fujitsu

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.

Extracting Data

1. ktdumper

Reading File Systems

1. assemble_sh704i_d904i
2. b4-ftl-extract
3. fs-tools (FSR_F)
4. fs-tools (XSR2)
5. TestDisk

Ktdumper is a tool for extracting data from feature phones that are compatible with the Foma debug adapter, which includes all Docomo phones and select SoftBank phones. Please note that ktdumper will not work unless you have the Foma debug adapter.

Ktdumper is compatible with Linux and WSL (Windows System on Linux). It can be used as a command line tool or as a live Linux iso with a GUI.

Ktdumper Command Line

sudo ./ktdumper.sh d904i dump_nand

Ktdumper Live Iso

Before using assemble_sh704i_d904i.py, you must separate the NAND and OOB (out of bounds) data.

1. Download the separate_nand_oob.py script from Github and place it into the folder generated by ktdumper
2. Execute the following script

   python separate_nand_oob.py nand_mixed.bin

3. When given a set of options, select 0 (the other options are not needed for D904i/SH904i devices)

   0: Data = 512 Bytes, OOB = 16 bytes, divisible = True

To remove the FTL:

1. Download the assemble_sh704i_d904i.py script from Github
2. Execute the following command

   python assemble_sh704i_d904i.py nand_mixed_separated_512.bin output.bin

After this, you must use TestDisk to acquire the data.

1. Download the b4-ftl-extract scripts from Github
2. Place scripts in the same folder as nand.bin
3. EITHER drag nand.bin into b4b4.bat or enter the following command

   python extract.py -s nand.bin output_dir

   This code will unscramble the FTL and place all data into a folder called output_dir

After this, you must use TestDisk to acquire the data.

NOTE: This extraction method may not work on WSL. If you are having errors after trying all steps, try switching from WSL to a full Linux installation.

1. Download the FSR_F tools from fs-tools on Github
2. In the FSR_F folder, run the following command

   pip3 install unicorn

3. Place onenand.bin and onenand.oob into the FSR_F folder and run the following commands

   python3 emu.py 14 part_14.bin
   python3 emu.py 15 part_15.bin
   python3 emu.py 19 part_19.bin
   python3 emu.py 1A part_1A.bin

After this, you must use TestDisk to acquire the data.

NOTE: This extraction method may not work on WSL. If you are having errors after trying all steps, try switching from WSL to a full Linux installation.

1. Download fs-tools from Github
2. In the XSR2 folder, run the following command

   sudo apt install gcc-arm-linux-gnueabi qemu qemu-user-static qemu-system-arm

3. Then build with the following command

   arm-linux-gnueabi-gcc xsr_stl.ko main.c -o main

4. Place onenand.bin and onenand.oob into the XSR2 folder and run the following command based on the type of part

   export QEMU_LD_PREFIX=/usr/arm-linux-gnueabi
   ./main onenand.bin onenand.oob B output.bin

   export QEMU_LD_PREFIX=/usr/arm-linux-gnueabi
   ./main onenand.bin onenand.oob A output.bin

   export QEMU_LD_PREFIX=/usr/arm-linux-gnueabi
   ./main onenand.bin onenand.oob 8 output.bin

After this, you must use TestDisk to acquire the data.

TestDisk can be used on either Windows or Linux. It is available for download here. Once you have downloaded TestDisk, use the program to open your current .bin file.

1. When you open a .bin file with TestDisk, you will have the option to select a media. There should only be

   >Disk <your file>

   Press enter to proceed.

2. When asked to select a partition table type, select None

   [None ] Non partitioned media

3. On the following page, press q to quit or select

   [ quit ]

4. In the new menu, move up the menu and select

   [ Analyse ]

5. Press enter to continue with

   [Quick Search]

6. You should now see a partition labeled with a file system like FAT16 or FAT32. Don’t press ENTER. Instead, press p to list files.
7. Press a to select all files.
8. Press C (note the capitalization and hold the shift button!) to copy the selected files.
9. Choose the output folder. Press C when the folder is correct.

You should now have all the extracted files.

Note: For select devices (such as F905i and D905i), you need to select None → Undelete rather than the usual TestDisk procedure.

Once you've dumped your games, it's time to generate and submit metadata to a preservation project for validating and cataloging. See the dump submission instructions for more information.