unsquashfs rootfs.bin Now you can browse and edit squashfs-root/ . After modifications, you must repack to the original Beta 3 format, or the device won’t accept it.
If you hit encryption or a variant header, dump the boot log from UART—often the device reveals the exact layout on startup. Unpack Mstar Bin Beta 3
Using mstar-bin-tool :
Happy unpacking, and may your firmware never brick. Have a trick for handling Beta 3 images? Share it in the comments below. unsquashfs rootfs