[Xperia Z2 Q&A, Help & Troubleshooting] cbadk:
Rom: D6503-17.1.A.2.69

This is the raw system and data partition files I extracted from the ext4 partitions.

If you then try and make a simple rom with the system files and the script(without the busybox and the other tools) , it installs fine, but when it boots it freezes for about 5 secs and the reboots.

http://we.tl/AiXLRRKHVh

and here's the updater-script

ui_print("");
ui_print("");
ui_print(" ---------------------------- ");
ui_print(" WELCOME TO CBADK-ROMS ");
ui_print(" ENJOY! ");
ui_print(" ---------------------------- ");
ui_print(" XPERIA Z2 ");
ui_print(" V1.0 ");
ui_print("");
ui_print("Starting installation...");
ui_print("");
ui_print("Formatting Cache and System...");
set_progress(0.5);
# Unmount system and cache
unmount("/cache");
unmount("/system");
# format system
ui_print("Formatting Cache...");
format("ext4", "EMMC", "/dev/block/mmcblk0p24", "0", "/cache");
ui_print("Formatting System...");
format("ext4", "EMMC", "/dev/block/mmcblk0p23", "0", "/system");
ui_print("Mounting System and cache...");
mount("ext4", "EMMC", "/dev/block/mmcblk0p23", "/system");
mount("ext4", "EMMC", "/dev/block/mmcblk0p24", "/cache");

ui_print("Installing System...");
package_extract_dir("system", "/system");

ui_print("Creating toolbox symlinks");
set_progress(0.80);
symlink("dumpstate", "/system/bin/dumpcrash");
symlink("toolbox", "/system/bin/cat");
symlink("toolbox", "/system/bin/chmod");
symlink("toolbox", "/system/bin/chown");
symlink("toolbox", "/system/bin/cmp");
symlink("debuggerd", "/system/bin/csview");
symlink("toolbox", "/system/bin/date");
symlink("toolbox", "/system/bin/dd");
symlink("toolbox", "/system/bin/df");
symlink("toolbox", "/system/bin/dmesg");
symlink("toolbox", "/system/bin/getevent");
symlink("toolbox", "/system/bin/getprop");
symlink("toolbox", "/system/bin/hd");
symlink("toolbox", "/system/bin/id");
symlink("toolbox", "/system/bin/ifconfig");
symlink("toolbox", "/system/bin/iftop");
symlink("toolbox", "/system/bin/insmod");
symlink("toolbox", "/system/bin/ioctl");
symlink("toolbox", "/system/bin/ionice");
symlink("toolbox", "/system/bin/kill");
symlink("toolbox", "/system/bin/ln");
symlink("toolbox", "/system/bin/log");
symlink("toolbox", "/system/bin/ls");
symlink("toolbox", "/system/bin/lsmod");
symlink("toolbox", "/system/bin/lsof");
symlink("toolbox", "/system/bin/mkdir");
symlink("toolbox", "/system/bin/mount");
symlink("toolbox", "/system/bin/mv");
symlink("toolbox", "/system/bin/nandread");
symlink("toolbox", "/system/bin/netstat");
symlink("toolbox", "/system/bin/newfs_msdos");
symlink("toolbox", "/system/bin/notify");
symlink("toolbox", "/system/bin/printenv");
symlink("toolbox", "/system/bin/ps");
symlink("toolbox", "/system/bin/renice");
symlink("toolbox", "/system/bin/rm");
symlink("toolbox", "/system/bin/rmdir");
symlink("toolbox", "/system/bin/rmmod");
symlink("toolbox", "/system/bin/route");
symlink("toolbox", "/system/bin/schedtop");
symlink("toolbox", "/system/bin/sendevent");
symlink("toolbox", "/system/bin/setconsole");
symlink("toolbox", "/system/bin/setprop");
symlink("toolbox", "/system/bin/sleep");
symlink("toolbox", "/system/bin/smd");
symlink("toolbox", "/system/bin/start");
symlink("toolbox", "/system/bin/stop");
symlink("toolbox", "/system/bin/sync");
symlink("toolbox", "/system/bin/top");
symlink("toolbox", "/system/bin/touch");
symlink("toolbox", "/system/bin/umount");
symlink("toolbox", "/system/bin/uptime");
symlink("toolbox", "/system/bin/vmstat");
symlink("toolbox", "/system/bin/watchprops");
symlink("toolbox", "/system/bin/wipe");
symlink("toolbox", "/system/bin/chcon");
symlink("toolbox", "/system/bin/setenforce");
symlink("toolbox", "/system/bin/grep");
symlink("toolbox", "/system/bin/runcon");
symlink("toolbox", "/system/bin/touchinput");
symlink("toolbox", "/system/bin/md5");
symlink("toolbox", "/system/bin/getsebool");
symlink("toolbox", "/system/bin/setsebool");
symlink("toolbox", "/system/bin/restorecon");
symlink("toolbox", "/system/bin/getenforce");
symlink("toolbox", "/system/bin/load_policy");
symlink("toolbox", "/system/bin/cp");
symlink("toolbox", "/system/bin/playback");
symlink("toolbox", "/system/bin/du");
ui_print("");
ui_print("");
ui_print(">>> Creating additional symlinks");
set_progress(0.85);
symlink("/system/bin/mksh", "/system/bin/sh");
symlink("/system/xbin/pigz", "/system/xbin/unpigz");
symlink("/system/lib/libGLESv2.so", "/system/lib/libGLESv3.so");
symlink("/system/fonts/Roboto-Regular.ttf","/system/fonts/DroidSans.ttf");
symlink("/system/fonts/Roboto-Bold.ttf","/system/fonts/DroidSans-Bold.ttf");
symlink("/data/misc/audio/wcd9320_anc.bin", "/system/etc/firmware/wcd9320/wcd9320_anc.bin");
symlink("/data/misc/audio/mad_audio.bin", "/system/etc/firmware/wcd9320/wcd9320_mad_audio.bin");
symlink("/data/misc/audio/mbhc.bin", "/system/etc/firmware/wcd9320/wcd9320_mbhc.bin");
ui_print("");
ui_print("");
ui_print("Installing busybox");
set_progress(0.90);
#set_metadata("/system/xbin/busybox", "uid", 0, "gid", 1000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_perm(0, 1000, 0755, "/system/xbin/busybox");
run_program("/system/xbin/busybox", "--install", "-s", "/system/xbin");
ui_print("");
ui_print("");
ui_print(">>> Setting permissions");
set_progress(0.95);
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/app_process", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:zygote_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/dhcpcd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:dhcp_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/hci_qcomm_init", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:hci_attach_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/keystore", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:keystore_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/mksh", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:shell_exec:s0");
set_metadata("/system/bin/mpdecision", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:mpdecision_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/netcfg", "uid", 0, "gid", 3003, "mode", 02750, "capabilities", 0x0, "selabel", "u:object_r:system_file: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/netmgrd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:netmgrd_exec:s0");
set_metadata("/system/bin/ping", "uid", 0, "gid", 0, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:ping_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/qmuxd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:qmux_exec:s0");
set_metadata("/system/bin/qseecomd", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:tee_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/rild", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:rild_exec:s0");
set_metadata("/system/bin/rmt_storage", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:rmt_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/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/surfaceflinger", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:surfaceflinger_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/wpa_supplicant", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:wpa_exec:s0");
set_metadata_recursive("/system/etc/dhcpcd", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:dhcp_system_file:s0");
set_metadata("/system/etc/dhcpcd/dhcpcd-run-hooks", "uid", 1014, "gid", 2000, "mode", 0550, "capabilities", 0x0, "selabel", "u:object_r:dhcp_system_file:s0");
set_metadata("/system/etc/gps.conf", "uid", 1000, "gid", 3003, "mode", 0640, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/etc/install-recovery.sh", "uid", 0, "gid", 0, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/etc/install-recovery-2.sh", "uid", 0, "gid", 0, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/etc/init.d", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/etc/init.d", "uid", 0, "gid", 0, "mode", 0755, "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:ppp_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/camera", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/vendor/etc", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/etc/audio_effects.conf", "uid", 0, "gid", 0, "mode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/vendor/firmware", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/firmware/libpn547_fw.so", "uid", 0, "gid", 0, "mode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/vendor/lib", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/lib/libbt-vendor.so", "uid", 0, "gid", 0, "mode", 0644, "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/egl", "uid", 0, "gid", 2000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/vendor/lib/hw", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/lib/hw/sensors.msm8974.so", "uid", 0, "gid", 0, "mode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata_recursive("/system/vendor/lib/mediadrm", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/lib/mediadrm/libwvdrmengine.so", "uid", 0, "gid", 0, "mode", 0644, "capabilities", 0x0, "selabel", "u:object_r:system_file:s0");
set_metadata("/system/vendor/media", "uid", 0, "gid", 2000, "mode", 0755, "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/su", "uid", 0, "gid", 0, "mode", 06755, "capabilities", 0x0, "selabel", "u:object_r:su_exec:s0");
set_metadata_recursive("/system/bin/.ext", "uid", 0, "gid", 2000, "dmode", 0755, "fmode", 0755, "capabilities", 0x0, "selabel", "u:object_r:su_exec:s0");
set_metadata("/system/bin/.ext/.su", "uid", 0, "gid", 0, "mode", 06755, "capabilities", 0x0, "selabel", "u:object_r:su_exec:s0");
set_metadata("/system/xbin/daemonsu", "uid", 0, "gid", 0, "mode", 06755, "capabilities", 0x0, "selabel", "u:object_r:su_exec:s0");
set_metadata("/system/etc/.installed_su_daemon", "uid", 0, "gid", 0, "mode", 0644, "capabilities", 0x0, "selabel", "u:object_r:su_exec:s0");
set_metadata("/system/build.prop", "uid", 0, "gid", 0, "mode", 0644, "capabilities", 0x0);
set_metadata("/system/bin/sysro", "uid", 1000, "gid", 1000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:sysro_exec:s0");
set_metadata("/system/bin/sysrw", "uid", 1000, "gid", 1000, "mode", 0755, "capabilities", 0x0, "selabel", "u:object_r:sysrw_exec:s0");

show_progress(0.100000, 0);
unmount("/system");
ui_print("");
ui_print("");
ui_print("");
ui_print("Installation complete!");
ui_print("Please restart your phone");