assert(getprop("ro.product.device") == "grus" || getprop("ro.build.product") == "grus" || abort("E3004: This package is for device: grus; this device is " + getprop("ro.product.device") + "."););
assert(xiaomi.verify_vendor("1562172420", "28") == "1" || xiaomi.verify_vendor("1564145310", "28") == "1" || xiaomi.verify_vendor("1564146094", "28") == "1" || xiaomi.verify_vendor("1564392158", "28") == "1" || abort("ERROR: This package requires vendor from MIUI V10.3.4.0.PFBEUXM build. Please upgrade vendor image and retry!"););
ui_print("Target: Xiaomi/grus/grus:9/PKQ1.181121.001/V11.0.4.0.PFBMIXM:user/release-keys");
ifelse(is_mounted("/system_root"), unmount("/system_root"));
package_extract_dir("install", "/tmp/install");
set_metadata_recursive("/tmp/install", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0644);
set_metadata_recursive("/tmp/install/bin", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0755);
mount("ext4", "EMMC", "/dev/block/bootdevice/by-name/system", "/system_root", "");
run_program("/tmp/install/bin/backuptool.sh", "backup", "/system");
unmount("/system_root");
show_progress(0.750000, 0);
ui_print("Patching system image unconditionally...");
block_image_update("/dev/block/bootdevice/by-name/system", package_extract_file("system.transfer.list"), "system.new.dat.br", "system.patch.dat") ||
  abort("E1001: Failed to update system image.");
show_progress(0.020000, 10);
mount("ext4", "EMMC", "/dev/block/bootdevice/by-name/system", "/system_root", "");
run_program("/tmp/install/bin/backuptool.sh", "restore", "/system");
unmount("/system_root");
show_progress(0.050000, 5);
package_extract_file("boot.img", "/dev/block/bootdevice/by-name/boot");
show_progress(0.200000, 10);
ui_print("Patching firmware images...");
package_extract_file("dtbo.img", "/dev/block/bootdevice/by-name/dtbo");
set_progress(1.000000);
