For 4.4.2 here is another is another Noob friendly Guide
* Flash tool HERE
* JAVA RUNTIME REQUIRED FOR FLASHTOOL HERE
* UNLOCKED BOOTLOADER TO UNLOCK GO HERE
Step 0 - download and copy SuperSU.zip in external SD card.
Step 1 - Connect your phone to your pc in Fastboot mode (Turn off your phone and connect usb while pressing vol up)
Step 2 - Now run Flash Tool and Click on Thunder button a Window will popup Select FastBoot Mode and Click OK
Step 4 - Click on SELECT KERNEL TO FLASH KERNEL CHOOSER WINDOW will open now click on *.sin and change it to *.img Now Select boot.img (download kernel for your device attached below) KERNEL WILL BE FLASHED
Step 5 - Now disconnect USB and press power button on phone. Phone will vibrate with WHITE notification light press vol up and down untill you see CWM recovery.
Step 6 - Select INSTALL ZIP IN CWM
Step 7 - Select 2nd option which is chose zip From /Sdcard1 now navigate to UPDATE-SuperSU-v1.zip and press power button.
Step 8 - now go back to first page and Select reboot. Fix root.
NOW YOU ARE ROOTED!!!
@vinay me. for Developing kernel.
@Raproid for giving us all 4.4.2 kernel that i ported to 4.4.4
@adrianocolvero root method used for D2203,D2243,D2206 (4G LTE)
@hell_lock for helping me packing boot.img
@Vynikal for helping me all the way from sorce code to boot.img.
@jerpelea for helping me finding correct defconfig and fixing problems.
@ShanePunk123 for testing D2203 LTE Kernel
@pedroj666 also for testing D2203 LTE Kernel
Supersu developer,s for supersu.
4pda team for cwm ramdisk.
ASK ME IF YOU CAN,T UNDERSTAND ANY STEP.
Don't forget to press thanks button
Rooting + CWM Recovery, Kernel for the Sony Xperia E3
Source Code: https://github.com/vinay94185vinay/Flamingo-kernel
Kernel Special Features: sony_ric disabled,cwm recovery
Current Stable Version: rk_build_v12_final
Last Updated 2015-04-25