Complete Guide to Unlock Bootloader, Installing Custom
Recovery(TWRP), and Root Sony Xperia T2 Ultra Dual
Here I am going to explain How to unlock the bootloader of your Sony Xperia T2 Ultra/Ultra dual Mobile and How to install a Custom recovery in your phone and How to get your phone rooted.
Before all, connect your phone to computer.
Download Xperia T2 Ultra USB Driver from here:
http://developer.sonymobile.com/downloads/drivers/xperia-t2-ultra-driver/
Right click on Computer> Properties>Device
Manager>Processors.
Under Processors, you can see an unknown device. Install it
by clicking “ Browse on this computer” and navigate to the extracted folder of
downloaded t2 ultra usb driver.’ Click next ‘ button and Install the USB dirver
for T2 Ultra.
If you have successfully installed the driver, you can see
the sony driver name in on Computer> Properties>Device
Manager>Processors as below.
Okay. You are ready to proceed.
STEP 1: UNLOCKING BOOTLOADER
For the safest rooting process, you have to unlock the boot
loader of your phone.
Then Follow the Steps below:
A. Install
the Android SDK and the device drivers
2. If you’re running Windows,
you also need to download and install an updated
Fastboot
driver(
http://developer.sonymobile.com/downloads/drivers/fastboot-driver/
). This is the standard
android_winusb.inf-file, with a few lines of
code added to enable Fastboot to support Sony & Sony Ericsson devices.
Replace the original
android_winusb.inf-file with the downloaded file
in the
usb_driver folder, located in the
Android SDK >
extras > google folder on your computer. If you can’t find the
usb_driver folder, make sure you are running Google USB Driver package revision
4 or higher in your Android SDK. If not, install the Google USB Driver Packager
using the Android SDK manager.
Note! If you’re running OSX or Linux, you are
not required to install any additional drivers.
3. Change the system path(My
Computer>Properties>Advanced>Enviornmental Variables>New) to path.
Ie, sytem
variable name: path
Variable value: C:\Users\(UserName)\AppData\Local\Android\sdk1
To check if ADB is working fine,
enable USB debugging mode on
you device and connect it to your computer. Now open START.cmd,
if Windows prompt, “Run Anyway” the START.cmd file.
Now execute the
following command:
adb devices
If return the serial number, then you
have set it up successfully and are good to go!
4. On your device, turn on
USB debugging by going to Settings > Developer options and
click to enable USB debugging.
As of Android Jelly Bean 4.2 the Developer options are hidden by default. To
enable them tap on Settings > About Phone > Build
Version multiple times. Then you will be able to access the Settings >
Developer options.
B. Connect
to Fastboot
1. Turn off your Xperia™ T2 Ultra
Dual.
2. Connect a USB-cable to your
computer.
3. On your Xperia™ T2 Ultra
Dual, press the Volume up button at the same time as you
connect the other end of the USB-cable. For Windows users, when asked for a driver,
point to the usb_driver folder where you placed the android_winusb.inf-file,
and select the Android Boot loader Interface-file.
4. When your device is connected,
open a command window on your computer and go to the platform-tools
folder within the Android SDK folder.
5. Enter the following command:
fastboot devices
6. Verify that you get an answer
back without any errors.
C. Enter
unlock key
WARNING! The command below
contains your unlock key. If you perform this step, you will unlock the boot
loader. This may void your warranty and/or any warranty from your operator.
1. If you still want to unlock the
boot loader of your device, enter the following command:
fastboot -i 0x0fce oem unlock (type your key here)
2. Verify that you get an answer
back without any errors.
D. Done!
You have now unlocked the boot loader of your
device.
STEP 2: INSTALLING RECOVERY
·
Battery: Charge your Xperia t2 ultra to at least 90%
so that you wont encounter any battery related issues while flashing this.
·
Backup:Backup all your data which includes apps,contacts,photos
videos etc everything to computer or any cloud storage as installing philz
recovery might erase data on your xperia t2 ultra.
Copy the image to a new folder
Change cmd directory to that folder.
Then
Turn off your phone.
1. Connect the usb cable while holding the volume up key (enter fastboot)
2. open cmd as Administrator and change directory to the location, that you have downloaded the '.img ' file.
3. On your pc execute this command -
Code:
fastboot flash boot <file-name>
type
the downloaded file name.img and hit enter.
3 Once it is complete, disconnect
the cable and turn on your phone.
4. To access the recovery :-
TWRP :- Volume Down
CWM :- Camera button
You will get the recovery screen
as below:
STEP 3: DOWNLOADING ROOTED FRIMWARE AND INSTALLING VIA
TWRP
Boot in TWRP. Ie,
Turn off the phone and while you turn it on again,
Press Volume down button .
After booting in twrp,
Touch
on “Wipe” and ensure all are checked except external sd card.
Then move the button to right side to execute wiping
process.
Touch on back button and then touch “Install” and navigate
to the ‘zip’ file that we’ve copied to sd card.
Select the zip file and install it. Reboot the phone.
Success. You have successfully Unlocked your phone and
Installed Custom recovery and Root permissions. You can Install any flashable
Zip file via the twrp recovery.But before that, you must clear the dalvic cache
and all other caches and internal memory. DO NOT clear the SD card.
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