Installing a newer Android version, if available.
Locate the extracted system.img . If it is a sparse image, convert it to a raw image using simg2img : simg2img system.img system_raw.img Use code with caution.
I can provide tailored instructions or locate specific commands for your MStar chipset. Share public link
If the TV loops on the boot logo or won't turn on, you must interface via UART.
These files are protected by MStar’s proprietary headers and compression algorithms. Standard Android kitchen tools cannot unpack them without specific MStar scripts. Essential MStar Android TV Firmware Tools