[Android General] HypoTurtle:
Yea those both look like there from ota.zip and not a full custom rom.zip: here's a full copy of a updater-script from a custom rom for my device (a 64bit MTK device).

show_progress(1, 60);
ui_print(" Formating system");
format("ext4", "EMMC", "/dev/block/platform/mtk-msdc.0/by-name/system", "0", "/system");
mount("ext4", "EMMC", "/dev/block/platform/mtk-msdc.0/by-name/system", "/system");
run_program("/sbin/mount", "-t", "auto", "/data");
ui_print(" Installing system");
ui_print(" Just a moment, please....");
package_extract_dir("system", "/system");
package_extract_dir("data", "/data");
ui_print(" Creating symlinks");
symlink("/system/lib/libbluetooth_jni.so", "/system/app/Bluetooth/lib/arm/libbluetooth_jni.so");
symlink("/system/lib/liba3m.so", "/system/app/Gallery2/lib/arm/liba3m.so");
symlink("/system/lib/libja3m.so", "/system/app/Gallery2/lib/arm/libja3m.so");
symlink("/system/lib64/libjni_latinime.so", "/system/app/LatinIME/lib/arm64/libjni_latinime.so");
symlink("/system/lib64/libjni_pacprocessor.so", "/system/app/PacProcessor/lib/arm64/libjni_pacprocessor.so");
symlink("/system/lib64/libttscompat.so", "/system/app/PicoTts/lib/arm64/libttscompat.so");
symlink("/system/lib64/libttspico.so", "/system/app/PicoTts/lib/arm64/libttspico.so");
symlink("/system/lib64/libprintspooler_jni.so", "/system/app/PrintSpooler/lib/arm64/libprintspooler_jni.so");
symlink("/system/lib/libvoicerecognition_jni.so", "/system/app/VoiceCommand/lib/arm/libvoicerecognition_jni.so");
symlink("/system/lib/libvie_jni.so", "/system/app/VoiceExtension/lib/arm/libvie_jni.so");
symlink("/system/lib/libwebviewchromium.so", "/system/app/webview/lib/arm/libwebviewchromium.so");
symlink("/system/lib64/libwebviewchromium.so", "/system/app/webview/lib/arm64/libwebviewchromium.so");
symlink("/system/lib64/libdefcontainer_jni.so", "/system/priv-app/DefaultContainerService/lib/arm64/libdefcontainer_jni.so");
symlink("/system/lib64/libfmjni.so", "/system/priv-app/FmRadio/lib/arm64/libfmjni.so");
symlink("/system/lib64/libfmjni.so", "/system/priv-app/MMITestCn/lib/arm64/libfmjni.so");
symlink("/system/lib64/libfmjni.so", "/system/priv-app/uniLauncher/lib/arm/libcoo.so");
symlink("/system/lib64/libfmjni.so", "/system/priv-app/uniLauncher/lib/arm/libcoogl20.so");
symlink("/system/lib64/libfmjni.so", "/system/priv-app/uniLauncher/lib/arm/libcut.so");
symlink("Roboto-Bold.ttf", "/system/fonts/DroidSans-Bold.ttf");
symlink("Roboto-Regular.ttf", "/system/fonts/DroidSans.ttf");
symlink("app_process64", "/system/bin/app_process");
symlink("dalvikvm64", "/system/bin/dalvikvm");
symlink("libGLESv2.so", "/system/lib/libGLESv3.so",
"/system/lib64/libGLESv3.so");
symlink("toolbox", "/system/bin/cat", "/system/bin/chcon", "/system/bin/chmod", "/system/bin/chown",
"/system/bin/clear", "/system/bin/cmp", "/system/bin/cp", "/system/bin/date",
"/system/bin/dd", "/system/bin/df", "/system/bin/dmesg", "/system/bin/du",
"/system/bin/getenforce", "/system/bin/getevent", "/system/bin/getprop", "/system/bin/getsebool",
"/system/bin/grep", "/system/bin/hd", "/system/bin/id", "/system/bin/ifconfig",
"/system/bin/iftop", "/system/bin/insmod", "/system/bin/ioctl", "/system/bin/ionice",
"/system/bin/kill", "/system/bin/ln", "/system/bin/load_policy", "/system/bin/log",
"/system/bin/ls", "/system/bin/lsmod", "/system/bin/lsof", "/system/bin/md5",
"/system/bin/mkdir", "/system/bin/mknod", "/system/bin/mkswap", "/system/bin/mount", "/system/bin/mv",
"/system/bin/nandread", "/system/bin/netstat", "/system/bin/newfs_msdos", "/system/bin/nohup", "/system/bin/notify",
"/system/bin/printenv", "/system/bin/ps", "/system/bin/readlink", "/system/bin/renice",
"/system/bin/restorecon", "/system/bin/rm", "/system/bin/rmdir", "/system/bin/rmmod",
"/system/bin/route", "/system/bin/runcon", "/system/bin/schedtop", "/system/bin/sendevent",
"/system/bin/setconsole", "/system/bin/setenforce", "/system/bin/setprop", "/system/bin/setsebool",
"/system/bin/sleep", "/system/bin/smd", "/system/bin/start", "/system/bin/stop",
"/system/bin/swapoff", "/system/bin/swapon", "/system/bin/sync", "/system/bin/top",
"/system/bin/touch", "/system/bin/umount", "/system/bin/uptime", "/system/bin/vmstat",
"/system/bin/watchprops", "/system/bin/wipe");
ui_print(" Setting permissions");
set_metadata_recursive("/system", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/bin", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/bin/6620_launcher", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mtk_6620_launcher_exec:s0");
set_metadata("/system/bin/aal", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:aal:s0");
set_metadata("/system/bin/aee_core_forwarder", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:aee_core_forwarder_exec:s0");
set_metadata("/system/bin/afm_server", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:afm_server_exec:s0");
set_metadata("/system/bin/akmd09911", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:akmd09911_exec:s0");
set_metadata("/system/bin/akmd8963", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:akmd8963_exec:s0");
set_metadata("/system/bin/akmd8975", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:akmd8975_exec:s0");
set_metadata("/system/bin/ami304d", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:ami304d_exec:s0");
set_metadata("/system/bin/app_process32", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:zygote_exec:s0");
set_metadata("/system/bin/app_process64", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:zygote_exec:s0");
set_metadata("/system/bin/atci_service", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:atci_service_exec:s0");
set_metadata("/system/bin/atcid", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:atcid_exec:s0");
set_metadata("/system/bin/audiocmdservice_atci", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:audiocmdservice_atci_exec:s0");
set_metadata("/system/bin/autokd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:autokd_exec:s0");
set_metadata("/system/bin/batterywarning", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:batterywarning_exec:s0");
set_metadata("/system/bin/bmm050d", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:bmm050d_exec:s0");
set_metadata("/system/bin/boot_logo_updater", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:boot_logo_updater_exec:s0");
set_metadata("/system/bin/bootanimation", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:bootanim_exec:s0");
set_metadata("/system/bin/ccci_fsd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:ccci_fsd_exec:s0");
set_metadata("/system/bin/ccci_mdinit", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:ccci_mdinit_exec:s0");
set_metadata("/system/bin/clatd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:clatd_exec:s0");
set_metadata("/system/bin/debuggerd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:debuggerd_exec:s0");
set_metadata("/system/bin/debuggerd64", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:debuggerd_exec:s0");
set_metadata("/system/bin/dhcp6c", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:dhcp6c_exec:s0");
set_metadata("/system/bin/dhcpcd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:dhcp_exec:s0");
set_metadata("/system/bin/dmlog", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:dmlog_exec:s0");
set_metadata("/system/bin/dnsmasq", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:dnsmasq_exec:s0");
set_metadata("/system/bin/drmserver", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:drmserver_exec:s0");
set_metadata("/system/bin/dualmdlogger", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:dualmdlogger_exec:s0");
set_metadata("/system/bin/dumpstate", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:dumpstate_exec:s0");
set_metadata("/system/bin/em_svr", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:em_svr_exec:s0");
set_metadata("/system/bin/emdlogger1", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:emdlogger_exec:s0");
set_metadata("/system/bin/factory", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:factory_exec:s0");
set_metadata("/system/bin/geomagneticd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:geomagneticd_exec:s0");
set_metadata("/system/bin/gsm0710muxd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:gsm0710muxd_exec:s0");
set_metadata("/system/bin/gsm0710muxdmd2", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:gsm0710muxdmd2_exec:s0");
set_metadata("/system/bin/guiext-server", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:guiext-server_exec:s0");
set_metadata("/system/bin/hostapd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:hostapd_exec:s0");
set_metadata("/system/bin/installd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:installd_exec:s0");
set_metadata("/system/bin/ipod", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:ipod_exec:s0");
set_metadata("/system/bin/keystore", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:keystore_exec:s0");
set_metadata("/system/bin/lmkd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:lmkd_exec:s0");
set_metadata("/system/bin/logd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:logd_exec:s0");
set_metadata("/system/bin/matv", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:matv_exec:s0");
set_metadata("/system/bin/mc6420d", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mc6420d_exec:s0");
set_metadata("/system/bin/md_ctrl", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:md_ctrl_exec:s0");
set_metadata("/system/bin/mdlogger", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mdlogger_exec:s0");
set_metadata("/system/bin/mdnsd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mdnsd_exec:s0");
set_metadata("/system/bin/mediaserver", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mediaserver_exec:s0");
set_metadata("/system/bin/memsicd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:memsicd_exec:s0");
set_metadata("/system/bin/memsicd3416x", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:memsicd3416x_exec:s0");
set_metadata("/system/bin/meta_tst", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:meta_tst_exec:s0");
set_metadata("/system/bin/mmp", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mmp_exec:s0");
set_metadata("/system/bin/mobile_log_d", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mobile_log_d_exec:s0");
set_metadata("/system/bin/msensord", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:msensord_exec:s0");
set_metadata("/system/bin/mtk_agpsd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mtk_agpsd_exec:s0");
set_metadata("/system/bin/mtkbt", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mtkbt_exec:s0");
set_metadata("/system/bin/MtkCodecService", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:MtkCodecService_exec:s0");
set_metadata("/system/bin/mtkrild", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mtkrild_exec:s0");
set_metadata("/system/bin/mtkrildmd2", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mtkrildmd2_exec:s0");
set_metadata("/system/bin/mtpd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mtp_exec:s0");
set_metadata("/system/bin/muxreport", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:muxreport_exec:s0");
set_metadata("/system/bin/nac_server", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:nac_server_exec:s0");
set_metadata("/system/bin/netd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:netd_exec:s0");
set_metadata("/system/bin/netdiag", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:netdiag_exec:s0");
set_metadata("/system/bin/netcfg", "uid", 0, "gid", 3003, "mode", 02750, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/bin/nvram_agent_binder", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:nvram_agent_binder_exec:s0");
set_metadata("/system/bin/nvram_daemon", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:nvram_daemon_exec:s0");
set_metadata("/system/bin/orientationd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:orientationd_exec:s0");
set_metadata("/system/bin/permission_check", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:permission_check_exec:s0");
set_metadata("/system/bin/ppl_agent", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:ppl_agent_exec:s0");
set_metadata("/system/bin/pppd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:ppp_exec:s0");
set_metadata("/system/bin/pppd_dt", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:pppd_dt_exec:s0");
set_metadata("/system/bin/pq", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:pq_exec:s0");
set_metadata("/system/bin/racoon", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:racoon_exec:s0");
set_metadata("/system/bin/run-as", "uid", 0, "gid", 2000, "mode", 0750, "capabilities", 0xc0, "selabel", "u:object_r:runas_exec:s0");
set_metadata("/system/bin/s62xd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:s62xd_exec:s0");
set_metadata("/system/bin/sdcard", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:sdcardd_exec:s0");
set_metadata("/system/bin/servicemanager", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:servicemanager_exec:s0");
set_metadata("/system/bin/sn", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:sn_exec:s0");
set_metadata("/system/bin/surfaceflinger", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:surfaceflinger_exec:s0");
set_metadata("/system/bin/terservice", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:terservice_exec:s0");
set_metadata("/system/bin/tertestclient", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:tertestclient_exec:s0");
set_metadata("/system/bin/testmode", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:testmode_exec:s0");
set_metadata("/system/bin/thermal", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:thermal_exec:s0");
set_metadata("/system/bin/thermal_manager", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:thermal_manager_exec:s0");
set_metadata("/system/bin/thermald", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:thermald_exec:s0");
set_metadata("/system/bin/tiny_mkswap", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:tiny_mkswap_exec:s0");
set_metadata("/system/bin/tiny_swapon", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:tiny_swapon_exec:s0");
set_metadata("/system/bin/uncrypt", "uid", 0, "gid", 0, "mode", 0750, "capabilities", 0x0, "selabel", "u:object_r:uncrypt_exec:s0");
set_metadata("/system/bin/vdc", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:vdc_exec:s0");
set_metadata("/system/bin/vold", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:vold_exec:s0");
set_metadata("/system/bin/wifi2agps", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:wifi2agps_exec:s0");
set_metadata("/system/bin/wmt_loader", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:wmt_loader_exec:s0");
set_metadata("/system/bin/wpa_supplicant", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:wpa_exec:s0");
set_metadata("/system/bin/xlog", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:xlog_exec:s0");
set_metadata("/system/etc/dhcpcd/dhcpcd-run-hooks", "uid", 1014, "gid", 2000, "mode", 0550, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/etc/ppp", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0555, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/etc/wide-dhcpv6/dhcp6c.script", "uid", 1014, "gid", 2000, "mode", 0550, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/lib", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/vendor/lib/drm", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/lib/drm/libdrmwvmplugin.so", "uid", 0, "gid", 0, "mode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/lib/hw", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/lib/mediadrm", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/vendor/lib64", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/vendor/lib64/mediadrm", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/lib64/mediadrm", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/vendor/operator", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/xbin", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/xbin/BGW", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:BGW_exec:s0");
set_metadata("/system/xbin/librank", "uid", 0, "gid", 0, "mode", 06755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/xbin/mnld", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mnld_exec:s0");
set_metadata("/system/xbin/procmem", "uid", 0, "gid", 0, "mode", 06755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/xbin/procrank", "uid", 0, "gid", 0, "mode", 06755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/xbin/su", "uid", 0, "gid", 2000, "mode", 04750, "capabilities", 0x0, "selabel", "u:object_r:su_exec:s0");
set_metadata("/system/xbin/tcpdump", "uid", 0, "gid", 0, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
show_progress(0.1, 0);
ui_print(" Flash kernel");
assert(package_extract_file("boot.img", "/tmp/boot.img"),
write_raw_image("/tmp/boot.img", "bootimg"),
delete("/tmp/boot.img"));
assert(run_program("/system/bin/dd", "if=/dev/zero", "of=/proc/driver/mtd_writeable", "bs=3", "count=1"));
ui_print(" ==> Unmounting /data");
ui_print(" ==> Unmounting /system");
unmount("/data");
unmount("/system");
ui_print("Successfully Please restart your phone manually!")

Most of it is fairly self explanitory - the boot.img bit is essentially the same as in the uodater-scripts you posted, and the rest is copying the system files and 'fixing' them; i.e. creating symlinks and fixing the permissions (set_metadata).