Sony XPERIA Dual E1 is the successor of Xperia E Dual, but compared to the first generation XPERIA E Dual it is a more powerful device. Sony XPERIA E1 Dual has a dual core processor and Android 4.3 Jelly Bean. Below you can find the latest firmware for the phone and also three tutorials / manuals - how to unlock the bootloader, how to relock the bootloader and how to backup the original firmware customization.Immediately following his ways:
1. How to Flash Android 4.4.2 KitKat latest to Sony XPERIA E1 Dual D2105
a) First of all, check your firmware version (if you already have the latest, you do not need this tutorial)
b) Download and install the latest Flashtool
c) Download the latest Firmware 4.4.2 for Android KitKat Sony XPERIA E1 DualD2105 Here all sony firmware here
d) Paste FTF file downloaded in step c) to the folder "Firmware" in the folder Flashtool
e) Open Flashtool, click on the flash and select the firmware was downloaded, click ok. Important - if you do not want to delete the data from your phone, simply uncheck userdata.sin. All data will remain in your phone, but sometimes it can cause additional problems. So it is better (and I recommend) to perform a backup of your personal data, continue with the installation clean and then restore your personal data.
f) Turn off your phone and when Flashtool show pop-up window, connect the phone to the PC by pressing the volume down key until the Led green color appears
g) After a few minutes all done and you get new firmware phone
