Guide to installing Xperia Lollipop using XperiFirm and Flashtool

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Finally, Android 5.0 Lollipop has started to roll for owners of the newer Xperia Z series, however the limiting factor is that it is currently only available in select regions. For those that don’t have the patience for it to arrive in their region we’ve created a quick guide on how to download and install the Lollipop update to your Sony Xperia device.

The process will be familiar to long-term readers of the blog and essentially if you’ve read one of our various debrand guides in the past, along with our tutorial on how to create a FTF firmware file then you’re pretty much there. However, after numerous requests we’ve decided to provide step-by-step instructions for those new to Xperia devices.

Installing Xperia Lollipop using XperiFirm and Flashtool [TUTORIAL]
Disclaimer: Please read the following instructions thoroughly before attempting to flash your phone. Xperia Blog absolves itself from any responsibility should something go wrong. Please proceed with caution and at your own risk.

Note: You do NOT need an unlocked bootloader or root for you to flash your handset. Warranty will NOT be voided if you flash new firmware to your handset.

It is recommended that you create a backup of your existing regional/carrier firmware just in case you need to send your device back for repair. This guide can be used to create any firmware file, so to create a backup just follow the instructions below with the relevant firmware build.

Preparation
1) Enable ‘USB debugging’ on your handset: Settings > Developer options

2) Enable ‘Unknown sources’ on your handset: Settings > Security

3) Install drivers for your Xperia handset: You need to ensure that your PC has all of the necessary drivers installed for your Sony Xperia. The best way to do this is to install PC Companion.

Make sure you connect your Xperia to the PC before starting the process to download the necessary USB and ADB drivers. If you have any problems you will find the necessary drivers (once you have installed Flashtool) in the following location: ‘C:\Flashtool\drivers’.

XperiFirm steps
First step is to download XperiFirm. Follow the instructions in that link to install.

Once installed you will see the program below. Navigate to your handset on the left pane. You can then choose the firmware for your region/carrier in the middle pane. The pane on the right side will show you which firmware is available for that region. Click on it to download the file.

Important: Only download firmware for your model and variant number. For example, if you own a Xperia Z3 (D6603), only browse and download the firmware builds listed under D6603.

XperiFirm_1-640x391.png


Once clicked, you are asked to confirm whether you want to download the firmware. Ensure that “Unpack automatically” is ticked and then click “Download” to proceed.

XperiFirm_2-640x323.png


Choose any folder as a location to download the new firmware.

XperiFirm_3-640x596.png


The firmware will now start downloading.

XperiFirm_4-640x323.png


Once complete, you will see the following pop message “Unpacked Successfully!” Click OK.

XperiFirm_5.png


The same “Unpacked successfully!” message will appear on the download dialog. Click “Close”.

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Check your download location and you will find a new folder that contains your firmware files.

XperiFirm_7-640x69.png


Inside the folder, you should find a number of files that look similar to the below.

XperiFirm_8-640x400.png


NOTE: If your list of files includes “fwinfo.xml” as highlighted below then manually delete it before continuing to the FlashTool steps. You MUST delete this file otherwise your FTF firmware file will corrupt.

fwinfo-XML-file.png


Congrats! That is the XperiFirm part of the tutorial complete. You now have the necessary files to create your FTF firmware file to flash your handset using Flashtool.

FlashTool steps
Download and install FlashTool.

Note: To install the Flashtool drivers for Windows 8/Windows 8.1, please follow the steps below.

1) Press the Windows key + R and in the run box type: shutdown.exe /r /o /f /t 00
– Now make the following selections to boot into the Start Up Setting Screen: Troubleshoot > Advanced options > Start Up Settings > Restart
– Then, when the machine restarts, select number 7 i.e. “Disable driver signature enforcement”. Your machine will start with Driver signing enforcement disabled until the next reboot.

2) Now you can install the Flashtool drivers.
– Windows will warn that the driver is not signed and will require you to confirm the installation.
– Once the installation is complete, reboot the machine

Once you launch the program, you should see something similar to the below. Navigate to Tools > Bundles > Create.

FlashTool_1-640x374.png


A new pop-up called “Bundler” will appear. Click on the three dots next to “Select source folder.”

Flashtool_2.png


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