HERE IS THE COMPLETE GUIDE TO UNLOCK THE XPERIA T2 ULTRA DUAL BOOTLOADER AND INSTALLING CUSTOM RECOVERY AND ROOTING and REPAIRING BOOTLOOP PROBLEM , Running in Android 5.1.1 Lollipop.
STEP 1: UNLOCKING BOOTLOADER
For the safest rooting process, you have to unlock the boot loader of your phone.
For that process, First of all goto: '//developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader' (copy-paste w/o quotes) this link and select T2 Ultra Dual and type email ID and Continue ti next step, By verifying your email ID.
Then Follow the Steps below:
A. Install the Android SDK and the device drivers
1. Download and install the Android SDK.
2. If you’re running Windows, you also need to download and install an updated Fastboot driver:'//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.
• Download:Download dual recovery for t2 ultra d5322
Copy the image(.img file) 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. 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 .
STEP 3: DOWNLOADING ROOTED FRIMWARE AND INSTALLING VIA TWRP
Download the Xperia T2 ultra stock rom with root access
rom created using PRFcreator.
you can get it by searching 'Flashable zip file for xperia y2 ultra dual'. I am unable to include the link.
flash rom WITH TWRP RECOVERY.
For that, Copy the downloaded zip to your memory card and insert the card.
Boot 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.
SEO:
xperia t2 ,xperia t2 ulta,xperia t2 ultra dual,bootloop xperia, bootloop xperia t2 ultra,sony ,sony xperia t2 ultra
