This indicates the bootloader has a fallback list of filenames (perhaps hardcoded by an engineer). The presence of new suggests an older engineering build where developers tested multiple image versions.
mstarupgradebin ("new" variant) is an indispensable utility for MStar firmware engineers. It bridges the gap between compiled source code (like Linux kernels and rootfs) and the hardware-specific format required by the device's flash memory. Mastering its configuration files and version compatibility is essential for successful firmware updates and device recovery. mstarupgradebin new