Sh UserDataBackupMode Cli

ShUdbmCli is a utility for compatible SH EMP Platform feature phones. It communicates with the handset through the Sharp SHBackUP USB OBEX service and its AT serial interface.

Features

• Display the phone model, software version, IMEI, and OBEX connection details.
• Back up or restore one SRAM, NOR, S-AND, HISTORY, or AMR object at a time.
• Generate an SD authentication file from the firmware version and IMEI.
• Query, enable, or disable the SH User Flag.

Requirements

• Python 3.10 or newer
• pyusb, tqdm, and pyserial
• A working libusb backend

python3 -m pip install pyusb tqdm pyserial

USB Serial Setup

Before using commands that communicate through the AT Command Port, add the phone's USB identifiers to the supported-device configuration of your system's USB Serial driver Reload the driver or reconnect the phone after changing the configuration. Make sure the phone is exposed as a serial device (for example, /dev/cu.usbmodem*, /dev/ttyUSB*, or COM3 on Windows) before running makeauthsd or shusrflag. If automatic detection selects the wrong port, pass the AT Command Port explicitly with --port. Serial communication uses pySerial on Windows, macOS, and Linux.

On Windows, install a compatible USB Serial driver so the AT interface appears as a COM port in Device Manager. List ports and query the user flag with:

python -m serial.tools.list_ports
python ShUdbmCli.py shusrflag status --port COM3

Usage

Probe the connected phone:

python3 ShUdbmCli.py probe

Back up an object with an automatically generated filename:

python3 ShUdbmCli.py backup --object S-AND --output

Restore a backup file:

python3 ShUdbmCli.py restore \
  --input S-AND_20260927_120000.bin \
  --confirm ERASE-AND-RESTORE

Generate an SD authentication file in the tool directory:

python3 ShUdbmCli.py makeauthsd

Copy the generated authentication file to the SD card root manually.

Query or change the Sharp user flag through the AT port:

python3 ShUdbmCli.py shusrflag status
python3 ShUdbmCli.py shusrflag on
python3 ShUdbmCli.py shusrflag off

Use --help with the main command or any subcommand for all available options.

Backup and Restore Workflows

The USB and SD card workflows are mutually exclusive. Do not leave an SD card containing a valid authentication file in the phone while using USB backup or restore. Conversely, do not attempt the SD card workflow while using the PC USB backup tool.

1. USB Backup or Restore

1. Start the phone normally in Normal Mode.

2. Connect to its Command Port and enable the SH User Flag:

   python3 ShUdbmCli.py shusrflag on

3. Completely power off the phone.

4. Make sure the phone does not contain an SD card with a valid authentication file.

5. Hold 0 + 6 + the power key to start the phone in User Data Backup Mode.

6. Use the PC tool to perform the required backup or restore operation.

2. SD Card Backup or Restore

1. Start the phone normally in Normal Mode.

2. Connect to its Command Port and enable the Sharp user flag:

   python3 ShUdbmCli.py shusrflag on

3. Generate the SD authentication file:

   python3 ShUdbmCli.py makeauthsd

4. Copy the generated authentication file to the root of the SD card.

5. Create the following case-sensitive directories and empty placeholder files on the SD card:

   /SHARPDEBUG/
   ├── SRAM.DAT
   ├── THERMLOG.DAT
   └── FLASH/
       ├── sand00.dat
       ├── nor00.dat
       └── nand00.dat
   

   On macOS or Linux, replace /Volumes/SDCARD with the actual SD card mount point and run:

   SD_ROOT=/Volumes/SDCARD
   mkdir -p "$SD_ROOT/SHARPDEBUG/FLASH"
   touch "$SD_ROOT/SHARPDEBUG/SRAM.DAT" \
         "$SD_ROOT/SHARPDEBUG/THERMLOG.DAT" \
         "$SD_ROOT/SHARPDEBUG/FLASH/sand00.dat" \
         "$SD_ROOT/SHARPDEBUG/FLASH/nor00.dat" \
         "$SD_ROOT/SHARPDEBUG/FLASH/nand00.dat"

   These files must exist before starting the SD card dump. The phone writes the corresponding dump data into the placeholder files.

6. Safely eject the SD card and insert it into the phone.

7. Completely power off the phone.

8. Hold 0 + 6 + the power key to enter User Data Backup Mode.

9. Use the phone's keys to select and perform the desired backup or restore operation.

Warning

Restore operations overwrite handset data. Keep a known-good backup and verify that the selected object and input file are correct before continuing. Changing the Sharp user flag also modifies handset state.

When performing FTL-related experiments, removing the battery directly is recommended instead of pressing the power key. Pressing the power key disables the User Flag. If broken the user data partition, it will bricked your device!