Edditing updater-script

In this thread, #6 post jellopuddingstick said that he could remove the check on updater-script in order to flash a rom which doesnt fit with build.prop . For example, this is my updater script I found in meta inf/com/google/android: assert(getprop("ro.product.device") == "thea" || getprop("ro.build.product") == "thea" || getprop("ro.product.device") == "thea_umtsds" || getprop("ro.build.product") == "thea_umtsds" || getprop("ro.product.device") == "thea_ds" || getprop("ro.build.product") == "thea_ds" || getprop("ro.product.device") == "XT1072" || getprop("ro.build.product") == "XT1072" || getprop("ro.product.device") == "XT1078" || getprop("ro.build.product") == "XT1078" || getprop("ro.product.device") == "XT1079" || getprop("ro.build.product") == "XT1079" || abort("E3004: This package is for device: thea,thea_umtsds,thea_ds,XT1072,XT1078,XT1079; this device is " + getprop("ro.product.device") + ".");); ui_print("Target: motorola/lineage_thea/thea:8.1.0/OPM1.171019.011/c397c2b19d:userdebug/test-keys"); ifelse(is_mounted("/system"), unmount("/system")); package_extract_dir("install", "/tmp/install"); set_metadata_recursive("/tmp/install", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0644); set_metadata_recursive("/tmp/install/bin", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0755); mount("ext4", "EMMC", "/dev/block/bootdevice/by-name/system", "/system", ""); run_program("/tmp/install/bin/backuptool.sh", "backup"); unmount("/system"); show_progress(0.750000, 0); ui_print("Patching system image unconditionally..."); block_image_update("/dev/block/bootdevice/by-name/system", package_extract_file("system.transfer.list"), "system.new.dat.br", "system.patch.dat") || abort("E1001: Failed to update system image."); show_progress(0.020000, 10); mount("ext4", "EMMC", "/dev/block/bootdevice/by-name/system", "/system", ""); run_program("/tmp/install/bin/backuptool.sh", "restore"); unmount("/system"); show_progress(0.050000, 5); package_extract_file("boot.img", "/dev/block/bootdevice/by-name/boot"); show_progress(0.200000, 10); set_progress(1.000000); How exactly would I need to edit this in order to not scramble it up?