Docomo Phones by Mitsubishi

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.

Mitsubishi phones were only manufactured in the early era of Docomo Foma phones. Current tools allow us to extract full data from some phones, and partial data (apps only) from other phones.

Extracting Data

1. ktdumper

Reading File Systems

1. assemble_sh704i_d904i.py
2. b4-ftl-extract
3. XSR2

Note that the dump_java script does not require the use of file extraction tools because it extracts individual files directly from the phone.

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

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.

NOTE: If TestDisk cannot extract the data, try selecting the [UNDELETE] option rather than the [Analyze] option.

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: If TestDisk says that the partition(s) can't be recovered, try [UNDELETE] instead of Analyze.

1. Download assemble_xsr2.py from Github
2. IF onenand is split into onenand_a and onenand_b, combine the bin files and the oob files
3. Use the following command

   python .\assemble_xsr2.py onenand.bin output_dir

4. In the output directory, select the largest partition and use TestDisk

NOTE: If TestDisk says that the partition(s) can't be recovered, try [UNDELETE] instead of Analyze.

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.