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/V12.0.5.0.QJOMIXM:user/release-keys");
ui_print("Target: Redmi/merlin_global/merlin:10/QP1A.190711.020/V12.0.6.0.QJOMIXM:user/release-keys");
ui_print("Verifying current system...");
getprop("ro.build.fingerprint") == "Redmi/merlin_global/merlin:10/QP1A.190711.020/V12.0.5.0.QJOMIXM:user/release-keys" ||
    getprop("ro.build.fingerprint") == "Redmi/merlin_global/merlin:10/QP1A.190711.020/V12.0.6.0.QJOMIXM:user/release-keys" ||
    abort("E3001: Package expects build fingerprint of Redmi/merlin_global/merlin:10/QP1A.190711.020/V12.0.5.0.QJOMIXM:user/release-keys or Redmi/merlin_global/merlin:10/QP1A.190711.020/V12.0.6.0.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:67108864:41df6950fe77540f304e690a4e87a0240ef26ec0",
                      "EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:53aeadc14e4359959b90516885a4012bd8c2993e") ||
    abort("E3005: \"EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:41df6950fe77540f304e690a4e87a0240ef26ec0\" or \"EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:53aeadc14e4359959b90516885a4012bd8c2993e\" has unexpected contents.");
apply_patch_space(68132864) || abort("E3006: Not enough free space on /cache to apply patches.");
patch_partition_check("EMMC:/dev/block/platform/bootdevice/by-name/md1img:58113088:6542813522c46859c18f2dba7fbe6fb4e1a706e8",
                      "EMMC:/dev/block/platform/bootdevice/by-name/md1img:58127952:d3539a9d7755fb22ce500f2d6e4cfc9abf009f43") ||
    abort("E3005: \"EMMC:/dev/block/platform/bootdevice/by-name/md1img:58113088:6542813522c46859c18f2dba7fbe6fb4e1a706e8\" or \"EMMC:/dev/block/platform/bootdevice/by-name/md1img:58127952:d3539a9d7755fb22ce500f2d6e4cfc9abf009f43\" has unexpected contents.");
apply_patch_space(58113088) || abort("E3006: Not enough free space on /cache to apply patches.");
show_progress(0.100000, 70);
if (range_sha1(map_partition("system"), "22,1,32770,32918,57574,58261,58263,58287,98306,98454,163842,163990,229378,229526,294914,295062,589837,589845,607243,609091,618744,618876,618877") == "d5ee2b4b1df7ef59b489443f0a3fae5a5471cfd0" || 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"), "22,1,32770,32918,57574,58261,58263,58287,98306,98454,163842,163990,229378,229526,294914,295062,589837,589845,607243,609091,618744,618876,618877") && 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"), "58,1,76,813,819,837,838,843,844,846,847,1361,1362,1364,1365,1526,1527,1538,1542,1546,1547,1763,1764,1843,1844,1914,1915,2100,2101,2179,2180,2259,2260,2339,2340,3125,3130,3226,3227,4716,4717,7464,7465,7673,7840,7886,32770,32810,98306,98346,163842,163882,163904,163908,164529,165046,167665,167712,167713") == "cb1a3f5d87a555327c92c95456974f32d801732f" || 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"), "58,1,76,813,819,837,838,843,844,846,847,1361,1362,1364,1365,1526,1527,1538,1542,1546,1547,1763,1764,1843,1844,1914,1915,2100,2101,2179,2180,2259,2260,2339,2340,3125,3130,3226,3227,4716,4717,7464,7465,7673,7840,7886,32770,32810,98306,98346,163842,163882,163904,163908,164529,165046,167665,167712,167713") && 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"), "190,1,84,5374,5375,9711,9715,11856,11859,14011,14012,14557,14563,14580,14581,20820,20821,23228,23229,23593,23597,24104,24105,24117,24121,24125,24126,25966,25970,27407,27408,31474,31478,32768,32770,32837,32844,35755,35756,42649,42650,43051,43052,50217,50218,58268,58269,65536,65543,70160,70161,70820,70821,78299,78300,84407,84408,84414,84415,84543,84547,84551,84552,98304,98306,98373,98380,99193,99194,114875,114876,116287,116288,122671,122672,129913,129914,131072,131079,133031,133035,133044,133045,133046,133047,133062,133063,133064,133065,133067,133069,133070,133071,133110,133114,133118,133120,133125,133128,133132,133134,133139,133140,133185,133186,133245,133248,133697,133698,134069,134070,135555,135556,135646,135648,135650,135651,135653,135654,135656,135657,135659,135660,135662,135663,135665,135666,135668,135669,135673,135674,135679,135680,135684,135685,135701,135702,135721,135722,135727,135728,135747,135748,136193,136195,143071,143073,159479,159480,163840,163842,163909,163946,166164,166166,168925,168929,168975,168976,169356,169360,169370,169371,174667,174668,178513,178514,178685,178689,178736,178738,178879,178881,180137,180139,181217,181219,181228,181296,189928,229378,229445,229450,229452,262145,262151,277316,278153,282564,282634,282635") == "285c3259b8be9b3dac5e87da146c7792054b0f2c" || 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"), "190,1,84,5374,5375,9711,9715,11856,11859,14011,14012,14557,14563,14580,14581,20820,20821,23228,23229,23593,23597,24104,24105,24117,24121,24125,24126,25966,25970,27407,27408,31474,31478,32768,32770,32837,32844,35755,35756,42649,42650,43051,43052,50217,50218,58268,58269,65536,65543,70160,70161,70820,70821,78299,78300,84407,84408,84414,84415,84543,84547,84551,84552,98304,98306,98373,98380,99193,99194,114875,114876,116287,116288,122671,122672,129913,129914,131072,131079,133031,133035,133044,133045,133046,133047,133062,133063,133064,133065,133067,133069,133070,133071,133110,133114,133118,133120,133125,133128,133132,133134,133139,133140,133185,133186,133245,133248,133697,133698,134069,134070,135555,135556,135646,135648,135650,135651,135653,135654,135656,135657,135659,135660,135662,135663,135665,135666,135668,135669,135673,135674,135679,135680,135684,135685,135701,135702,135721,135722,135727,135728,135747,135748,136193,136195,143071,143073,159479,159480,163840,163842,163909,163946,166164,166166,168925,168929,168975,168976,169356,169360,169370,169371,174667,174668,178513,178514,178685,178689,178736,178738,178879,178881,180137,180139,181217,181219,181228,181296,189928,229378,229445,229450,229452,262145,262151,277316,278153,282564,282634,282635") && 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:67108864:41df6950fe77540f304e690a4e87a0240ef26ec0",
                "EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:53aeadc14e4359959b90516885a4012bd8c2993e",
                package_extract_file("boot.img.p")) ||
    abort("E3008: Failed to apply patch to EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:53aeadc14e4359959b90516885a4012bd8c2993e");
show_progress(0.600000, 600);

# --- Start patching dynamic partitions ---


# 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 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.");

# 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:58113088:6542813522c46859c18f2dba7fbe6fb4e1a706e8",
                "EMMC:/dev/block/platform/bootdevice/by-name/md1img:58127952:d3539a9d7755fb22ce500f2d6e4cfc9abf009f43",
                package_extract_file("patch/md1img.img.p")) ||
    abort("E3008: Failed to apply patch to EMMC:/dev/block/platform/bootdevice/by-name/md1img:58127952:d3539a9d7755fb22ce500f2d6e4cfc9abf009f43");
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();
