show_progress(0.500000, 0);
show_progress(0.200000, 0);
show_progress(0.200000, 10);
show_progress(0.200000, 10);
assert(package_extract_file("boot.img", "/tmp/boot.img"),
       write_raw_image("/tmp/boot.img", "/dev/block/mmcblk0p5"),
       delete("/tmp/boot.img"));
show_progress(0.100000, 0);
unmount("/system");
