Flash the original, unmodified dump file via ISP programmer to restore the TV to a working state.
Guide to the Mstar Unpack/Repack Tool for Firmware Modification Dump Mstar Unpack Repack Tool
Always keep a copy of the original dump.bin . A bad repack can permanently brick the device if you lose the original bootloader. Always test modifications on a donor board first. Flash the original, unmodified dump file via ISP
./unpack_mstar.sh -f original_firmware.bin -o ./unpacked Flash the original