getprop("ro.product.device") == "cereus" || abort("E3004: This package is for \"cereus\" devices; this is a \"" + getprop("ro.product.device") + "\".");
ui_print("Source: xiaomi/cereus/cereus:8.1.0/O11019/V10.2.6.0.OCGMIXM:user/release-keys");
ui_print("Target: xiaomi/cereus/cereus:8.1.0/O11019/V10.3.2.0.OCGMIXM:user/release-keys");
ui_print("Verifying current system...");
getprop("ro.build.fingerprint") == "xiaomi/cereus/cereus:8.1.0/O11019/V10.2.6.0.OCGMIXM:user/release-keys" ||
    getprop("ro.build.fingerprint") == "xiaomi/cereus/cereus:8.1.0/O11019/V10.3.2.0.OCGMIXM:user/release-keys" ||
    abort("E3001: Package expects build fingerprint of xiaomi/cereus/cereus:8.1.0/O11019/V10.2.6.0.OCGMIXM:user/release-keys or xiaomi/cereus/cereus:8.1.0/O11019/V10.3.2.0.OCGMIXM:user/release-keys; this device has " + getprop("ro.build.fingerprint") + ".");
apply_patch_space(209346560) || abort("E3006: Not enough free space on /cache to apply patches.");
show_progress(0.100000, 70);
if (range_sha1("/dev/block/platform/bootdevice/by-name/system", "90,1,377,665,2704,3793,32770,32927,32928,33433,43902,47739,52431,52782,52783,58090,65537,66042,69824,73306,98306,98463,98464,98969,126874,131072,131073,135572,163842,163999,164000,164505,173012,175910,175911,176660,187892,187894,196609,197114,229378,229535,229536,230041,262145,262650,262651,279034,294914,295071,295072,295577,296907,297467,298222,298225,302249,302357,302489,302600,302700,302876,319793,319808,327681,328186,328371,328378,360449,360954,393217,393722,425985,426490,458753,459258,491521,492026,520622,520635,524289,524794,540142,540164,540690,622592,622593,644999,655221,655359,655360") == "bb21064958dd6f3ed789d8f0eddd925a73ac704e" || block_image_verify("/dev/block/platform/bootdevice/by-name/system", package_extract_file("system.transfer.list"), "system.new.dat", "system.patch.dat")) then
ui_print("Verified system image...");
else
check_first_block("/dev/block/platform/bootdevice/by-name/system");
ifelse (block_image_recover("/dev/block/platform/bootdevice/by-name/system", "90,1,377,665,2704,3793,32770,32927,32928,33433,43902,47739,52431,52782,52783,58090,65537,66042,69824,73306,98306,98463,98464,98969,126874,131072,131073,135572,163842,163999,164000,164505,173012,175910,175911,176660,187892,187894,196609,197114,229378,229535,229536,230041,262145,262650,262651,279034,294914,295071,295072,295577,296907,297467,298222,298225,302249,302357,302489,302600,302700,302876,319793,319808,327681,328186,328371,328378,360449,360954,393217,393722,425985,426490,458753,459258,491521,492026,520622,520635,524289,524794,540142,540164,540690,622592,622593,644999,655221,655359,655360") && block_image_verify("/dev/block/platform/bootdevice/by-name/system", package_extract_file("system.transfer.list"), "system.new.dat", "system.patch.dat"), ui_print("system recovered successfully."), abort("E1004: system partition fails to recover"));
endif;
if (range_sha1("/dev/block/platform/bootdevice/by-name/vendor", "24,1,131,555,32770,32817,32818,33323,65537,66042,66043,70138,98306,98353,98354,98859,101046,163840,163842,163889,163890,193485,196553,196607,196608") == "f5d7b65b174a554ba988dcd276d9f1e9dafdf11d" || block_image_verify("/dev/block/platform/bootdevice/by-name/vendor", package_extract_file("vendor.transfer.list"), "vendor.new.dat", "vendor.patch.dat")) then
ui_print("Verified vendor image...");
else
check_first_block("/dev/block/platform/bootdevice/by-name/vendor");
ifelse (block_image_recover("/dev/block/platform/bootdevice/by-name/vendor", "24,1,131,555,32770,32817,32818,33323,65537,66042,66043,70138,98306,98353,98354,98859,101046,163840,163842,163889,163890,193485,196553,196607,196608") && block_image_verify("/dev/block/platform/bootdevice/by-name/vendor", package_extract_file("vendor.transfer.list"), "vendor.new.dat", "vendor.patch.dat"), ui_print("vendor recovered successfully."), abort("E2004: vendor partition fails to recover"));
endif;

# ---- start making changes here ----

ui_print("Installing boot image...");
package_extract_file("boot.img", "/dev/block/platform/bootdevice/by-name/boot");
show_progress(0.600000, 600);
ui_print("Patching system image after verification.");
block_image_update("/dev/block/platform/bootdevice/by-name/system", package_extract_file("system.transfer.list"), "system.new.dat", "system.patch.dat") ||
  abort("E1001: Failed to update system image.");
ui_print("Patching vendor image after verification.");
block_image_update("/dev/block/platform/bootdevice/by-name/vendor", package_extract_file("vendor.transfer.list"), "vendor.new.dat", "vendor.patch.dat") ||
  abort("E2001: Failed to update vendor image.");
show_mtupdate_stage("/cache/recovery/last_mtupdate_stage");
ifelse (
less_than_int(get_mtupdate_stage("/cache/recovery/last_mtupdate_stage"), "1") ,
(
ui_print("start to update general image");
package_extract_file("logo.bin", "/dev/block/platform/bootdevice/by-name/logo");
package_extract_file("md1img.img", "/dev/block/platform/bootdevice/by-name/md1img");
package_extract_file("spmfw.img", "/dev/block/platform/bootdevice/by-name/spmfw");
set_mtupdate_stage("/cache/recovery/last_mtupdate_stage", "1");
),
ui_print("general images are already updated");
);
ifelse (
less_than_int(get_mtupdate_stage("/cache/recovery/last_mtupdate_stage"), "3") ,
(
if less_than_int(get_mtupdate_stage("/cache/recovery/last_mtupdate_stage"), "2") then

ui_print("start to update alt loader image");
package_extract_file("sspm.img", "/dev/block/platform/bootdevice/by-name/sspm_2");
package_extract_file("tee.img", "/dev/block/platform/bootdevice/by-name/tee2");
package_extract_file("lk.img", "/dev/block/platform/bootdevice/by-name/lk2");
package_extract_file("scp.img", "/dev/block/platform/bootdevice/by-name/scp2");
assert(set_emmc_writable("/sys/block/mmcblk0boot1/force_ro"),
       package_extract_file("preloader.img", "/dev/block/mmcblk0boot1"));
set_mtupdate_stage("/cache/recovery/last_mtupdate_stage", "2");
endif;

switch_active("sspm_1", "sspm_2");
switch_active("tee1", "tee2");
switch_active("lk", "lk2");
switch_active("scp1", "scp2");
switch_active("preloader", "preloader2");
set_mtupdate_stage("/cache/recovery/last_mtupdate_stage", "3");
),
ui_print("alt loder images are already updated");
);
ifelse (
less_than_int(get_mtupdate_stage("/cache/recovery/last_mtupdate_stage"), "5") ,
(
if less_than_int(get_mtupdate_stage("/cache/recovery/last_mtupdate_stage"), "4") then

ui_print("start to update main loader image");
package_extract_file("sspm.img", "/dev/block/platform/bootdevice/by-name/sspm_1");
package_extract_file("tee.img", "/dev/block/platform/bootdevice/by-name/tee1");
package_extract_file("lk.img", "/dev/block/platform/bootdevice/by-name/lk");
package_extract_file("scp.img", "/dev/block/platform/bootdevice/by-name/scp1");
assert(set_emmc_writable("/sys/block/mmcblk0boot0/force_ro"),
       package_extract_file("preloader.img", "/dev/block/mmcblk0boot0"));
set_mtupdate_stage("/cache/recovery/last_mtupdate_stage", "4");
endif;

switch_active("sspm_2", "sspm_1");
switch_active("tee2", "tee1");
switch_active("lk2", "lk");
switch_active("scp2", "scp1");
switch_active("preloader2", "preloader");
),
ui_print("main loader images are already updated");
);
ifelse (
less_than_int(get_mtupdate_stage("/cache/recovery/last_mtupdate_stage"), "6") ,
(
if less_than_int(get_mtupdate_stage("/cache/recovery/last_mtupdate_stage"), "5") then

ui_print("start to update vbmeta and odmdtbo image");
package_extract_file("vbmeta.img", "/dev/block/platform/bootdevice/by-name/vbmeta");
package_extract_file("odmdtbo.img", "/dev/block/platform/bootdevice/by-name/odmdtbo");
set_mtupdate_stage("/cache/recovery/last_mtupdate_stage", "5");
endif;

),
ui_print("vbmeta and odmdtbo images are already updated");
);
delete("/cache/recovery/last_mtupdate_stage");
show_progress(0.100000, 2);
