If the tool creates filenames but they contain 0 bytes of data, it implies the offset calculations inside the extraction script failed.
The script relies on structural modules not included in the base Python installation.
Unpacking firmware should only be performed on devices you own, for purposes such as:
mkdir /mnt/mstar_system sudo mount -o loop system.img /mnt/mstar_system Use code with caution. Troubleshooting Common Errors Error: "Header Magic Not Found"
Place your target firmware file (e.g., allupgrade_msd6a648.bin ) into the exact same folder. Step 2: Configure the Tool unpack mstar bin beta 3
I can provide targeted scripts or exact packing commands for your specific use case. Share public link
Once you have made your changes (e.g., deleting bloatware from system.img ), you need to put the file back together.
The filesystem containing system apps and configurations. User Data: Specific settings and local files.
Place the unpack_mstar_bin_beta3 script file into this folder. If the tool creates filenames but they contain
Once the process finishes, the command prompt will return to a blank input line. Analyzing the Extracted Output
Many Chinese distribution sites (like ZNDS.com ) offer a (One-click pack/unpack) file.
| Error / Issue | Solution | | :--- | :--- | | | Your Python installation is missing encryption libraries. Run pip install pycryptodome in CMD | | Folder is empty after unpack | The firmware uses a proprietary header not yet supported. Alternatively, try running the extract.py script instead of unpack.py | | System.img won't mount (Invalid sparse format) | Android 9 and newer uses sparse images . You need the updated tool version from the sha-man-4pda repository | | "Not a valid MStar firmware" | The file might be for Amlogic or Realtek chips. Use a hex editor to inspect the header (look for "MSTAR" or "BINT") |
Depending on the distribution package, the Beta 3 tool operates via a Graphical User Interface (GUI) or a Command Line Interface (CLI). Method A: Using the CLI (Recommended for Advanced Logs) Open Command Prompt or PowerShell as an Administrator. Navigate to your working directory: cd C:\MStar_Firmware\ Use code with caution. Execute the unpacking script by targeting your file: python mstar_unpack_beta3.py upgrade_loader.bin Use code with caution. Method B: Using the GUI Executable Double-click the MStar_Unpacker_Beta3.exe file. Click and select your target MStar .bin file. The filesystem containing system apps and configurations
Contains system binaries, configurations, and core applications.
Download the repository as a ZIP file (e.g., mstar-bin-tool-master.zip ) and extract it to a simple directory like C:\mstar to avoid long path issues.
import sys import os import re import shutil import utils DEBUG = False HEADER_SIZE = 16 * utils.KB # Header size is always 16KB # GitHub
Many modern MStar builds use Secure Boot , meaning the images are encrypted (AES) and signed (RSA). You may need to use extract_keys.py to pull the necessary keys from the MBOOT binary before you can successfully modify and repack the images .