How to port CM12/CM12.1 lollipop based Rom for Kitkat

How to port CM12/CM12.1 lollipop based Rom for Kitkat 

Unpack both boot.img Stock & cm12/cm12.1

• Use Stock zImage(Kernel) With Cm12 ramdisk
• stock/ramdisk/ueventd.rc
• compare lines of both ramdisk/default.prop then
  Replace those line from stock boot.img/ramdisk/default.prop to cm12 boot.img/ramdisk/default.prop........
  1. ro.secure=*
  2. ro.allow.mock.location=*
  3. ro.debuggable=*

Now, port system folder...
replace stock to port...

• firmware from system/etc
• libMali.so from system/lib
• libcamdrv.so from system/lib
• libcamalgo.so from system/lib
• libcameracustom.so from system/lib

Edit build.prop by notepad++..

• Change dpi,
  ro.sf.lcd_density=*** (as ur Stock build.prop)
  
• Rotation as ur device.
  ro.sf.hwrotation=*** (use 0 or 180 as ur device)
  

META-INF folder:

Open meta-inf folder & locate updater-script META-INF\com\google\android, then open it with Notepad++
just change system & data (if available) block mounting point as ur device,
Compare mmcblk0p* with ur stock Rom Zip

• format("ext4", "EMMC", "/dev/block/mmcblk0p5", "0", "/system");
• format("ext4", "EMMC", "/dev/block/mmcblk0p7", "0", "/data");
• mount("ext4", "EMMC", "/dev/block/mmcblk0p5", "/system");

#Now zip it & flash with Philz recovery 6.59
Best of luck,, Happy Porting