If your custom firmware causes a bootloop, you must use a hardware tool to restore the device. Connect a adapter to your PC.
If you use firmware for a different panel resolution, you may experience inverted colors, distorted images, or a completely black screen.
This is the most common and robust utility used for flashing MStar boards. It communicates via an (hardware USB-to-TTL adapter) connected to the VGA or HDMI port of the TV.
To customize the Android TV system (e.g., removing bloatware, adding root binaries, changing the boot animation): Mount the system.img file as an ext4 loop device in Linux. mstar android tv firmware tools
Before diving into firmware modification, understanding the risks is essential.
Open your command terminal and execute the unpack command (e.g., mstar-bin-tool -u MstarUpgrade.bin ).
This tool is particularly powerful for handling newer Android versions (9.0 and above) that use dynamic partitions. One user reported that only a forked version from 4PDA could properly unpack Android 9.0 firmware because the original mstar-bin-tool lacked support for dynamic partitions. If your custom firmware causes a bootloop, you
Click "Run" or "Auto" to start the flashing process.
python mstar_unpack.py -i MST_FW.bin -o extracted/
Click the "Connect" button in the tool, then click "Open" and select your .bin firmware file. This is the most common and robust utility
Mstar Firmware Download Guide | PDF | Usb | Icon (Computing)
Press and hold the physical on the TV chassis (not the remote).
Download the official MstarUpgrade.bin file for your exact TV model and motherboard chassis number. Place the .bin file into your MStar Bin Tool directory.
pack.py ./unpacked/ new_upgrade.bin
When your TV is bricked—stuck on the logo, bootlooping, or completely black—the is your rescue tool. It connects your PC to the TV’s mainboard via a USB‑to‑VGA cable (using specific TX/RX pins) and programs the firmware directly to the flash chip, bypassing the normal boot process entirely.