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/V11.0.2.0.QJOINXM:user/release-keys");
ui_print("Target: Redmi/merlin_in/merlin:10/QP1A.190711.020/V11.0.3.0.QJOINXM:user/release-keys");
ui_print("Verifying current system...");
getprop("ro.build.fingerprint") == "Redmi/merlin_in/merlin:10/QP1A.190711.020/V11.0.2.0.QJOINXM:user/release-keys" ||
    getprop("ro.build.fingerprint") == "Redmi/merlin_in/merlin:10/QP1A.190711.020/V11.0.3.0.QJOINXM:user/release-keys" ||
    abort("E3001: Package expects build fingerprint of Redmi/merlin_in/merlin:10/QP1A.190711.020/V11.0.2.0.QJOINXM:user/release-keys or Redmi/merlin_in/merlin:10/QP1A.190711.020/V11.0.3.0.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:d9e4c39ceb134519ab641a4b1de959f2546be7d1",
                      "EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:0d7f4feb8ce9aa0af1794a14b1f4ce02fe615990") ||
    abort("E3005: \"EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:d9e4c39ceb134519ab641a4b1de959f2546be7d1\" or \"EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:0d7f4feb8ce9aa0af1794a14b1f4ce02fe615990\" has unexpected contents.");
apply_patch_space(67108864) || abort("E3006: Not enough free space on /cache to apply patches.");
patch_partition_check("EMMC:/dev/block/platform/bootdevice/by-name/md1img:57555232:fa02c351f6f5a60e3ef8beed851178765ca5d6f0",
                      "EMMC:/dev/block/platform/bootdevice/by-name/md1img:57567824:7755bc1c3b5431301aebc14f9ea6a685b8abcc77") ||
    abort("E3005: \"EMMC:/dev/block/platform/bootdevice/by-name/md1img:57555232:fa02c351f6f5a60e3ef8beed851178765ca5d6f0\" or \"EMMC:/dev/block/platform/bootdevice/by-name/md1img:57567824:7755bc1c3b5431301aebc14f9ea6a685b8abcc77\" has unexpected contents.");
apply_patch_space(57555232) || abort("E3006: Not enough free space on /cache to apply patches.");
show_progress(0.100000, 70);
if (range_sha1(map_partition("system"), "80,1,189,217,224,474,478,494,495,32768,32770,32923,32943,33978,33980,33995,33999,34003,34004,34163,34167,34175,34176,34192,34196,34200,34201,34214,34218,34222,34223,34235,34239,34243,34244,34276,34277,35353,35359,35388,35389,35395,35399,35403,35404,35521,35527,35533,35534,37705,37709,37738,37739,40733,40734,43309,43310,43340,43344,43348,43349,43446,43450,43454,98306,98459,163842,163995,229378,229531,294914,295067,388072,388099,622607,622612,625651,627549,637493,637630,637631") == "b26b8c9274aa0866e33e74e2aaf3e41266c14442" || 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"), "80,1,189,217,224,474,478,494,495,32768,32770,32923,32943,33978,33980,33995,33999,34003,34004,34163,34167,34175,34176,34192,34196,34200,34201,34214,34218,34222,34223,34235,34239,34243,34244,34276,34277,35353,35359,35388,35389,35395,35399,35403,35404,35521,35527,35533,35534,37705,37709,37738,37739,40733,40734,43309,43310,43340,43344,43348,43349,43446,43450,43454,98306,98459,163842,163995,229378,229531,294914,295067,388072,388099,622607,622612,625651,627549,637493,637630,637631") && 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"), "14,1,32770,32811,98306,98347,163842,163883,163905,163909,171483,172021,174750,174798,174799") == "330a50632fcc26ac1623d2c88a4317524930ff32" || 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"), "14,1,32770,32811,98306,98347,163842,163883,163905,163909,171483,172021,174750,174798,174799") && 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"), "68,1,73,4342,4346,6466,6469,8599,8600,9157,9163,9180,9181,12892,12896,17109,17110,23349,23350,23989,23993,24763,24764,25128,25132,25639,25640,25652,25656,25660,25661,27501,27505,28942,28943,32768,32770,32826,32833,35897,35898,36303,36304,43469,43470,51520,51521,63408,63409,64065,64066,64072,64073,64205,64207,64215,98306,98362,163842,163898,229378,229434,229439,229441,231877,232578,236267,236328,236329") == "c0d87936867d3fb5da5479afd039c25a6f6e4fa1" || 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"), "68,1,73,4342,4346,6466,6469,8599,8600,9157,9163,9180,9181,12892,12896,17109,17110,23349,23350,23989,23993,24763,24764,25128,25132,25639,25640,25652,25656,25660,25661,27501,27505,28942,28943,32768,32770,32826,32833,35897,35898,36303,36304,43469,43470,51520,51521,63408,63409,64065,64066,64072,64073,64205,64207,64215,98306,98362,163842,163898,229378,229434,229439,229441,231877,232578,236267,236328,236329") && 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:d9e4c39ceb134519ab641a4b1de959f2546be7d1",
                "EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:0d7f4feb8ce9aa0af1794a14b1f4ce02fe615990",
                package_extract_file("boot.img.p")) ||
    abort("E3008: Failed to apply patch to EMMC:/dev/block/platform/bootdevice/by-name/boot:67108864:0d7f4feb8ce9aa0af1794a14b1f4ce02fe615990");
show_progress(0.600000, 600);

# --- Start patching dynamic partitions ---


# 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.");

# Update dynamic partition metadata

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

# 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.");

# --- 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:57555232:fa02c351f6f5a60e3ef8beed851178765ca5d6f0",
                "EMMC:/dev/block/platform/bootdevice/by-name/md1img:57567824:7755bc1c3b5431301aebc14f9ea6a685b8abcc77",
                package_extract_file("patch/md1img.img.p")) ||
    abort("E3008: Failed to apply patch to EMMC:/dev/block/platform/bootdevice/by-name/md1img:57567824:7755bc1c3b5431301aebc14f9ea6a685b8abcc77");
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();
