Nexu 7 2013 Upgrade Android 4.3 to 4.4.2

 Do you have problems upgrading Nexus 7 from Jelly Bean to Kitkat? Well I did, since the day got my hands of N7 device, it was unlocked and rooted. 

Somewhere is Sep 2013 the News of Kitkat has been rolling out. In Oct my N7 device notified on the new Kitkat update. I have been trying using OTA update but each time came to "FAILED" installation and so decided to give up the idea since JB 4.3 was working fine.

Now Kitkat rolled out 4.4.2 version and still I had the same problem, did some researched on XDA forum and tried each of their suggestion but still did not work out. I was always stuck with "KoreanIME.apk" error on recovery, perhaps something I deleted earlier on.

Sony Xperia Unlock the Boot Loader

photo from http://developer.sony.com/

Boot Loader is a system in which how your device will be startup running. Most of the time it is locked so that you do not mess up the device and keep the service center busy. However manufacturer like Sony gives user an option to unlock it. The process is not difficult if you follow the instructions below carefully. This will also lead to resetting the device and a fresh startup is required. Factory updates will no longer work. 

Normally when we do this, our next step will be rooting. We are prepared to make changes to our device, change factory setup, overclock it and many other goodie stuff to improve our devices but if you do not have any clue, suggest do some research such as XDA Development Forum. That is your best start.