When a standard tool like mkbootimg is used, it strips this proprietary header, rendering the image unbootable on MStar hardware.
If your custom firmware causes the TV to get stuck on the boot logo, the most common culprit is broken file permissions. Always perform the repacking operations inside a Linux environment using sudo to preserve root ownership of system binaries.
make_ext4fs -s -l 2G -a system system_new.img ./modified_system_folder/ Use code with caution. mstar android tv firmware tools repack
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:
Navigate to /system_mount/system/app/ or /system_mount/system/priv-app/ and delete resource-heavy OEM telemetry apps or unwanted stock launchers. When a standard tool like mkbootimg is used,
Use the sha-man-4pda fork of mstar-bin-tool , which includes updated scripts for handling modern partition schemes.
python unpack.py C:\TV_Work\CtvUpgrade.bin C:\TV_Work\unpacked\ Use code with caution. make_ext4fs -s -l 2G -a system system_new
MStar firmware modification requires a suite of tools. Here's the complete arsenal.
