getprop("ro.product.device") == "merlin" || abort("E3004: This package is for \"merlin\" devices; this is a \"" + getprop("ro.product.device") + "\".");
ui_print("Source: Redmi/merlin_global/merlin:10/QP1A.190711.020/V11.0.5.0.QJOMIXM:user/release-keys");
ui_print("Target: Redmi/merlin_global/merlin:10/QP1A.190711.020/V12.0.2.0.QJOMIXM:user/release-keys");
ui_print("Verifying current system...");
getprop("ro.build.fingerprint") == "Redmi/merlin_global/merlin:10/QP1A.190711.020/V11.0.5.0.QJOMIXM:user/release-keys" ||
    getprop("ro.build.fingerprint") == "Redmi/merlin_global/merlin:10/QP1A.190711.020/V12.0.2.0.QJOMIXM:user/release-keys" ||
    abort("E3001: Package expects build fingerprint of Redmi/merlin_global/merlin:10/QP1A.190711.020/V11.0.5.0.QJOMIXM:user/release-keys or Redmi/merlin_global/merlin:10/QP1A.190711.020/V12.0.2.0.QJOMIXM:user/release-keys; this device has " + getprop("ro.build.fingerprint") + ".");
show_progress(0.100000, 10);
patch_partition_check("EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:5c1c7d23da335fbe113d286b918efabecf13aabe",
                      "EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:45ec46f5d73e7241a2980e45d1fc4998158d1455") ||
    abort("E3005: \"EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:5c1c7d23da335fbe113d286b918efabecf13aabe\" or \"EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:45ec46f5d73e7241a2980e45d1fc4998158d1455\" has unexpected contents.");
apply_patch_space(102862848) || abort("E3006: Not enough free space on /cache to apply patches.");
patch_partition_check("EMMC:/dev/block/platform/bootdevice/by-name/md1img:57563440:415b87ea1f10a2abed8dda8c2d68c919f48e340c",
                      "EMMC:/dev/block/platform/bootdevice/by-name/md1img:57522016:c3e1a75c25a4ac5e67d0ac22f6287cbb48bfbbed") ||
    abort("E3005: \"EMMC:/dev/block/platform/bootdevice/by-name/md1img:57563440:415b87ea1f10a2abed8dda8c2d68c919f48e340c\" or \"EMMC:/dev/block/platform/bootdevice/by-name/md1img:57522016:c3e1a75c25a4ac5e67d0ac22f6287cbb48bfbbed\" has unexpected contents.");
apply_patch_space(57563440) || abort("E3006: Not enough free space on /cache to apply patches.");
show_progress(0.100000, 70);
if (range_sha1(map_partition("system"), "172,1,190,191,32770,32911,67323,71966,71968,76571,98306,98447,163842,163983,174124,174125,176585,176586,229378,229519,294914,295055,302536,302540,303647,303651,336850,336941,342070,342144,356415,356465,367529,367566,367911,367914,367942,368008,368796,372505,372506,372529,373633,373637,374335,374338,374472,374474,377911,379616,379617,379631,385265,385292,398923,398956,398973,399289,400325,400645,426127,430397,430958,431089,431239,431372,432189,432319,432469,432602,437609,438650,457377,458752,458821,466080,469340,473143,487996,488707,489202,489436,489441,489451,493748,493769,493772,493789,493815,493831,493833,493835,493849,493852,493864,493869,493898,493899,493906,493908,493914,493917,493919,493920,493929,493931,493945,493947,493949,493950,493965,493967,494027,494029,494046,494057,494059,494222,494249,494263,494265,494268,494279,494280,494282,494284,494288,494289,494297,494301,494332,494333,494340,494342,494348,494351,494364,494365,494381,494383,494385,494386,494489,494490,494535,494548,494594,494613,494614,494686,495968,495974,495975,496100,496187,496188,498307,499114,499115,499120,499121,499191,499226,499227,557070,557078,576117,576128,576134,577881,587040,587165,587166") == "1913657dc5665d2fc17f6e03d8ae9568ab81e149" || block_image_verify(map_partition("system"), package_extract_file("system.transfer.list"), "system.new.dat", "system.patch.dat")) then
ui_print("Verified system image...");
else
check_first_block(map_partition("system"));
ifelse (block_image_recover(map_partition("system"), "172,1,190,191,32770,32911,67323,71966,71968,76571,98306,98447,163842,163983,174124,174125,176585,176586,229378,229519,294914,295055,302536,302540,303647,303651,336850,336941,342070,342144,356415,356465,367529,367566,367911,367914,367942,368008,368796,372505,372506,372529,373633,373637,374335,374338,374472,374474,377911,379616,379617,379631,385265,385292,398923,398956,398973,399289,400325,400645,426127,430397,430958,431089,431239,431372,432189,432319,432469,432602,437609,438650,457377,458752,458821,466080,469340,473143,487996,488707,489202,489436,489441,489451,493748,493769,493772,493789,493815,493831,493833,493835,493849,493852,493864,493869,493898,493899,493906,493908,493914,493917,493919,493920,493929,493931,493945,493947,493949,493950,493965,493967,494027,494029,494046,494057,494059,494222,494249,494263,494265,494268,494279,494280,494282,494284,494288,494289,494297,494301,494332,494333,494340,494342,494348,494351,494364,494365,494381,494383,494385,494386,494489,494490,494535,494548,494594,494613,494614,494686,495968,495974,495975,496100,496187,496188,498307,499114,499115,499120,499121,499191,499226,499227,557070,557078,576117,576128,576134,577881,587040,587165,587166") && block_image_verify(map_partition("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(map_partition("vendor"), "36,1,5648,5651,10804,18244,18245,20643,32770,32811,35161,35162,46401,46410,54801,54815,63433,63448,79565,79571,98306,98347,131399,131412,158202,158222,163842,163883,163905,163909,169793,169795,169835,169847,171488,172026,174735") == "07e7f7b62d019657301aca04168e03c059b8a2c1" || block_image_verify(map_partition("vendor"), package_extract_file("vendor.transfer.list"), "vendor.new.dat", "vendor.patch.dat")) then
ui_print("Verified vendor image...");
else
check_first_block(map_partition("vendor"));
ifelse (block_image_recover(map_partition("vendor"), "36,1,5648,5651,10804,18244,18245,20643,32770,32811,35161,35162,46401,46410,54801,54815,63433,63448,79565,79571,98306,98347,131399,131412,158202,158222,163842,163883,163905,163909,169793,169795,169835,169847,171488,172026,174735") && block_image_verify(map_partition("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;
if (range_sha1(map_partition("product"), "30,1,81,5371,5372,9641,9645,9731,11768,11864,32770,32834,82812,82944,82946,82954,98306,98370,163842,163906,229378,229442,229448,229449,262145,262151,263222,264017,268203,268270,268271") == "e1a3837768210741c3456c82709dd5c7882e91c7" || block_image_verify(map_partition("product"), package_extract_file("product.transfer.list"), "product.new.dat", "product.patch.dat")) then
ui_print("Verified product image...");
else
ifelse (block_image_recover(map_partition("product"), "30,1,81,5371,5372,9641,9645,9731,11768,11864,32770,32834,82812,82944,82946,82954,98306,98370,163842,163906,229378,229442,229448,229449,262145,262151,263222,264017,268203,268270,268271") && block_image_verify(map_partition("product"), package_extract_file("product.transfer.list"), "product.new.dat", "product.patch.dat"), ui_print("product recovered successfully."), abort("E2004: product partition fails to recover"));
endif;

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

ui_print("Patching boot image...");
show_progress(0.100000, 10);
patch_partition("EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:5c1c7d23da335fbe113d286b918efabecf13aabe",
                "EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:45ec46f5d73e7241a2980e45d1fc4998158d1455",
                package_extract_file("boot.img.p")) ||
    abort("E3008: Failed to apply patch to EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:45ec46f5d73e7241a2980e45d1fc4998158d1455");
show_progress(0.600000, 600);

# --- Start patching dynamic partitions ---


# Patch partition vendor

ui_print("Patching vendor image after verification.");
block_image_update(map_partition("vendor"), package_extract_file("vendor.transfer.list"), "vendor.new.dat", "vendor.patch.dat") ||
  abort("E2001: Failed to update vendor image.");

# Update dynamic partition metadata

assert(update_dynamic_partitions(package_extract_file("dynamic_partitions_op_list")));

# Patch partition product

ui_print("Patching product image after verification.");
block_image_update(map_partition("product"), package_extract_file("product.transfer.list"), "product.new.dat", "product.patch.dat") ||
  abort("E2001: Failed to update product image.");

# Patch partition system

ui_print("Patching system image after verification.");
block_image_update(map_partition("system"), package_extract_file("system.transfer.list"), "system.new.dat", "system.patch.dat") ||
  abort("E1001: Failed to update system image.");

# --- End patching dynamic partitions ---

show_progress(0.100000, 2);
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("dtbo.img", "/dev/block/platform/bootdevice/by-name/dtbo");
package_extract_file("exaid.img", "/dev/block/platform/bootdevice/by-name/exaid");
ui_print("Patching md1img image...");
show_progress(0.100000, 10);
patch_partition("EMMC:/dev/block/platform/bootdevice/by-name/md1img:57563440:415b87ea1f10a2abed8dda8c2d68c919f48e340c",
                "EMMC:/dev/block/platform/bootdevice/by-name/md1img:57522016:c3e1a75c25a4ac5e67d0ac22f6287cbb48bfbbed",
                package_extract_file("patch/md1img.img.p")) ||
    abort("E3008: Failed to apply patch to EMMC:/dev/block/platform/bootdevice/by-name/md1img:57522016:c3e1a75c25a4ac5e67d0ac22f6287cbb48bfbbed");
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("scp.img", "/dev/block/platform/bootdevice/by-name/scp2");
package_extract_file("lk.img", "/dev/block/platform/bootdevice/by-name/lk2");
package_extract_file("tee.img", "/dev/block/platform/bootdevice/by-name/tee2");
if get_storage_type() then 
 assert(package_extract_file("preloader_ufs.img", "/dev/block/mmcblk0boot1"));
else 
 assert(set_emmc_writable("/sys/block/mmcblk0boot1/force_ro"),
        package_extract_file("preloader_emmc.img", "/dev/block/mmcblk0boot1"));
endif;
set_mtupdate_stage("/cache/recovery/last_mtupdate_stage", "2");
endif;

switch_active("sspm_1", "sspm_2");
switch_active("scp1", "scp2");
switch_active("lk", "lk2");
switch_active("tee1", "tee2");
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("scp.img", "/dev/block/platform/bootdevice/by-name/scp1");
package_extract_file("lk.img", "/dev/block/platform/bootdevice/by-name/lk");
package_extract_file("tee.img", "/dev/block/platform/bootdevice/by-name/tee1");
if get_storage_type() then 
 assert(package_extract_file("preloader_ufs.img", "/dev/block/mmcblk0boot0"));
else 
 assert(set_emmc_writable("/sys/block/mmcblk0boot0/force_ro"),
        package_extract_file("preloader_emmc.img", "/dev/block/mmcblk0boot0"));
endif;
set_mtupdate_stage("/cache/recovery/last_mtupdate_stage", "4");
endif;

switch_active("sspm_2", "sspm_1");
switch_active("scp2", "scp1");
switch_active("lk2", "lk");
switch_active("tee2", "tee1");
switch_active("preloader2", "preloader");
),
ui_print("main loader images are already updated");
);
delete("/cache/recovery/last_mtupdate_stage");
package_extract_file("vbmeta_system.img", "/dev/block/platform/bootdevice/by-name/vbmeta_system");
package_extract_file("vbmeta.img", "/dev/block/platform/bootdevice/by-name/vbmeta");
package_extract_file("vbmeta_vendor.img", "/dev/block/platform/bootdevice/by-name/vbmeta_vendor");
post_ota_action();
