So I think I've automated the unpacking of 2-system.img within Cygwin terminal (mintty), using @kizwan 's unsquashfs.exe 32bit from page15 of this thread. There is a windows cmd script to call cygwin mintty and in turn call a bash script to run unsquashfs.exe . I'm still working on the mksquashfs script. download - https://www.dropbox.com/s/xdnhk4rmzfps3jx/unsquash-cygwin-script-goprawn.zip?dl=1 and setup your folder like the photo, and run unsquash-cygwin.cmd script. Could you please test it on your firmware?