Before attempting to unpack or repack firmware, you must set up an appropriate development environment and gather the necessary utility scripts. 1. Development Environment
Take your newly created system_new.img (renamed back to system.img ) and place it back into the tool folder with the original unedited partitions. Run the repacking script:
The initial code that initializes hardware and boots the system.
Check if the image is sparse. If it is, convert it using simg2img : simg2img system.img system_raw.img Use code with caution.
Requires Python 3.4 or higher installed on your computer. B. MstarBinTool-GUI mstar android tv firmware tools repack
The specific you want to make (e.g., debloating, adding root, changing boot animation).
Inject a root daemon (like Magisk or SuperSU binaries) into /system/xbin/ and adjust initialization scripts if modifying an older Android TV version.
sudo umount system_mount # Convert the modified raw image back to a sparse Android image img2simg system.raw.img system_modified.img Use code with caution.
Several developer utilities have been created specifically to handle MStar binaries. Because these tools are often community-developed, they are frequently bundled together as "repacks" or comprehensive toolsets containing all necessary scripts, binaries, and dependencies. 1. MStar Bin Tool (Python-based) Before attempting to unpack or repack firmware, you
mkdir system_mount sudo mount -o loop system_raw.img system_mount/ Use code with caution. Step 3: Modifying the Firmware Content
Complete Guide to MStar Android TV Firmware Tools: Unpacking and Repacking
Convert your modified system_workdir back into a raw ext4 image using make_ext4fs . You must specify the exact size of the partition matching your original dump:
: Modern MStar builds often use Secure Boot, meaning partitions like Run the repacking script: The initial code that
MStarBinTool-GUI (by chfl4gs) – https://github.com/chuqian123/MStarBinTool-GUI MStar Firmware Tools (4pda) – https://4pda.to/forum/index.php?showtopic=932428 MSTool+ (Telegram) – often updated by Russian devs
You’ll need:
Before flashing any custom binary, secure a full original firmware copy or an eMMC dump via ISP tools if possible.
Using the command-line version, navigate to the tool's directory and execute:
Edit system.img (usually requires converting it to a sparse image first, then mounting it) to remove unnecessary apps.