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_in/merlin:10/QP1A.190711.020/V12.0.5.0.QJOINXM:user/release-keys");
ui_print("Target: Redmi/merlin_in/merlin:10/QP1A.190711.020/V12.0.6.0.QJOINXM:user/release-keys");
ui_print("Verifying current system...");
getprop("ro.build.fingerprint") == "Redmi/merlin_in/merlin:10/QP1A.190711.020/V12.0.5.0.QJOINXM:user/release-keys" ||
    getprop("ro.build.fingerprint") == "Redmi/merlin_in/merlin:10/QP1A.190711.020/V12.0.6.0.QJOINXM:user/release-keys" ||
    abort("E3001: Package expects build fingerprint of Redmi/merlin_in/merlin:10/QP1A.190711.020/V12.0.5.0.QJOINXM:user/release-keys or Redmi/merlin_in/merlin:10/QP1A.190711.020/V12.0.6.0.QJOINXM: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:c6c513b52666c0a189973300540958a57b6aeca5",
                      "EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:7f1013d7a35f6f8de6350f949dc35ff0ba8d7fe0") ||
    abort("E3005: \"EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:c6c513b52666c0a189973300540958a57b6aeca5\" or \"EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:7f1013d7a35f6f8de6350f949dc35ff0ba8d7fe0\" has unexpected contents.");
apply_patch_space(67137536) || abort("E3006: Not enough free space on /cache to apply patches.");
patch_partition_check("EMMC:/dev/block/platform/bootdevice/by-name/md1img:58123424:eb35c52eec305ad2fb4b9431f70fae7d8e1b4f59",
                      "EMMC:/dev/block/platform/bootdevice/by-name/md1img:58127952:84e57e264ff49b5c1d739f3bd9364256b41fc5aa") ||
    abort("E3005: \"EMMC:/dev/block/platform/bootdevice/by-name/md1img:58123424:eb35c52eec305ad2fb4b9431f70fae7d8e1b4f59\" or \"EMMC:/dev/block/platform/bootdevice/by-name/md1img:58127952:84e57e264ff49b5c1d739f3bd9364256b41fc5aa\" has unexpected contents.");
apply_patch_space(58123424) || abort("E3006: Not enough free space on /cache to apply patches.");
show_progress(0.100000, 70);
if (range_sha1(map_partition("system"), "22,1,32770,32925,57586,58273,58275,58299,98306,98461,163842,163997,229378,229533,294914,295069,622608,622612,633452,635373,645442,645579,645580") == "202c93539195b262eea2da35d38136b8a95aa7be" || 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"), "22,1,32770,32925,57586,58273,58275,58299,98306,98461,163842,163997,229378,229533,294914,295069,622608,622612,633452,635373,645442,645579,645580") && 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"), "62,1,76,813,819,837,838,843,844,846,847,1361,1362,1364,1365,1526,1527,1538,1542,1546,1547,1763,1764,1843,1844,1914,1915,2100,2101,2179,2180,2259,2260,2339,2340,3125,3130,3226,3227,4716,4717,7464,7465,7673,7840,7886,30894,31014,31015,32600,32770,32810,98306,98346,163842,163882,163904,163908,164529,165046,167665,167712,167713") == "4cf0a31e1efe6c1c401e8c1f600002d98aeffc72" || 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"), "62,1,76,813,819,837,838,843,844,846,847,1361,1362,1364,1365,1526,1527,1538,1542,1546,1547,1763,1764,1843,1844,1914,1915,2100,2101,2179,2180,2259,2260,2339,2340,3125,3130,3226,3227,4716,4717,7464,7465,7673,7840,7886,30894,31014,31015,32600,32770,32810,98306,98346,163842,163882,163904,163908,164529,165046,167665,167712,167713") && 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"), "136,1,76,4412,4416,6557,6560,8712,8713,9258,9264,9281,9282,12993,12997,17210,17211,23450,23451,24090,24094,24864,24865,25229,25233,25740,25741,25753,25757,25761,25762,27602,27606,29043,29044,32768,32770,32829,32836,36001,36002,36407,36408,43573,43574,51624,51625,63512,63513,64169,64170,64176,64177,64305,64309,64313,64314,65536,65543,78886,78887,94568,94569,95980,95981,98304,98306,98365,98372,102431,102432,109674,109675,112785,112789,112798,112799,112800,112801,112815,112816,112817,112818,112820,112822,112823,112824,112862,112866,112871,112874,112879,112880,112925,112926,112985,112988,113437,113438,113809,113810,115916,115918,118737,118739,131072,131099,135167,135168,144510,144512,144938,144940,145121,145123,145170,145172,145313,145315,146571,146573,147651,147653,147662,147730,156362,163842,163901,229378,229437,229442,229444,243832,244569,248447,248511,248512") == "dca4ea9c925a320c2462b50ccb141203e0df8d2e" || 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"), "136,1,76,4412,4416,6557,6560,8712,8713,9258,9264,9281,9282,12993,12997,17210,17211,23450,23451,24090,24094,24864,24865,25229,25233,25740,25741,25753,25757,25761,25762,27602,27606,29043,29044,32768,32770,32829,32836,36001,36002,36407,36408,43573,43574,51624,51625,63512,63513,64169,64170,64176,64177,64305,64309,64313,64314,65536,65543,78886,78887,94568,94569,95980,95981,98304,98306,98365,98372,102431,102432,109674,109675,112785,112789,112798,112799,112800,112801,112815,112816,112817,112818,112820,112822,112823,112824,112862,112866,112871,112874,112879,112880,112925,112926,112985,112988,113437,113438,113809,113810,115916,115918,118737,118739,131072,131099,135167,135168,144510,144512,144938,144940,145121,145123,145170,145172,145313,145315,146571,146573,147651,147653,147662,147730,156362,163842,163901,229378,229437,229442,229444,243832,244569,248447,248511,248512") && 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:c6c513b52666c0a189973300540958a57b6aeca5",
                "EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:7f1013d7a35f6f8de6350f949dc35ff0ba8d7fe0",
                package_extract_file("boot.img.p")) ||
    abort("E3008: Failed to apply patch to EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:7f1013d7a35f6f8de6350f949dc35ff0ba8d7fe0");
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:58123424:eb35c52eec305ad2fb4b9431f70fae7d8e1b4f59",
                "EMMC:/dev/block/platform/bootdevice/by-name/md1img:58127952:84e57e264ff49b5c1d739f3bd9364256b41fc5aa",
                package_extract_file("patch/md1img.img.p")) ||
    abort("E3008: Failed to apply patch to EMMC:/dev/block/platform/bootdevice/by-name/md1img:58127952:84e57e264ff49b5c1d739f3bd9364256b41fc5aa");
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();
