Cool [KK 4.4.2] Root, Upgrade Z1 Official 4.4.2 Guide

Official FTF Mega collection -> http://forum.xda-developers.com/show....php?t=2469191
Xperia basics: http://forum.xda-developers.com/show....php?t=2440565

Pre requisites:
1. FlashTool http://www.flashtool.net/download.php
2. Working Adb


ETA: 1-2 hours

Step 1. Download 14.1.G.1.534 C6902 IN FTF and flash with Flash Tool (this erases internal storage)

Step 2. Enable USB debugging, enable Unknown sources in settings.
Mod edit -Vroot collects your IMEI for no known reason, use it at your own risk
Use Vroot or root360 to root (both are chinese tools) http://singgihjohary.wordpress.com/2...534-and-later/

Step 3. Install SuperSU from play store and run it.


Step 4. Install DualRecovery using windows installer (bat file) http://forum.xda-developers.com/show....php?t=2261606

Step 5 and 6: http://forum.xda-developers.com/show....php?t=2687443
Step 5. Flash 4.4 Zip through TWRP (dont reboot, just power off) http://nut.xperia-files.com/?dlid=Qz...AudG9ycmVudA==

Step 6. While in power off state, enter flashmode (Volume down as you plug in power cable) and flash FTF stripped via flashtool
http://nut.xperia-files.com/?dlid=Qz...lwcGVkLmZ0Zg==

Need more pointers? Checkout my Detailed and Full Xperia Z1 4.4.2 Guide
-Taran
Geeknizer | Android next generation | Geek Photography
Complete Guide to Android Smartphone Audiophile
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Tarandeep on Google+ - Android developer, Audiophile, Photographer
Devices
Nexus 10 with Android 4.4.2 | Xperia Z1 on 4.4.2