Sony Xperia T2 Ultra is a phablet, being sold at a very affordable price. This phone comes in two variants, Single SIM and Dual SIM variant. This guide is concerned with tha Dual SIM variant. T2 Ultra Dual is also known with model number as D5322 and XM50h. So, of you own any of these model, then continue reading.
T2 Ultra sports a 6 inches display with 720p HD display. As expected, it offers crisp display quality, thanks to the Sony’s exclusive Bravia Engine 2 and Trluminous display technology. The phone has 8 GB of internal memory, which seems quite sufficient of you do not like to keep many big games at the same time. The phone is powered by a Quad Core processor, based on Snapdragon 400 chipset. Other basic features include a 13 MP shooter at back, Adreno 305 GPU, almost all sensors and 3000 mAh battery backup. Buying this phone will also offer you a lifetime 50 GB free Box storage. Unlike other time limited services provided by Dropbox, this seems to be very promising. However, the availabality of this offer may vary in different regions.
Rooting any Android device includes pushing SU binaries in system and installing a Super User application like SuperSU. There are several advantages to this method. It offers complete control over all the files of the phone and users can modify it in any way they want to. There are some applications, that offer unique and useful features, but they cannot work on non-rooted phones. Such a useful application is 2Lines For Whatsapp. This application allows you to use two Whatsapp accounts on the same phone. Now that is intriguing. There are many ways in which root can be helpful to you. If you would like to root your phone, then follow this guide to the letter. Note that this guide is to root T2 Ultra Dual SIM. It will work on D5322 and XM50h versions only. Moreover, it is for the firmware 19.0.D.0.253 only. Do not use these files on any other phone or any other variant of this phone.
Requirements
1. ADB and Fastboot Drivers:
ADB is basic tool for any Android related operation and fastboot is one of its applications. ADB installs all the necessary ADB drivers for Android powered devices and activate the developer mode on device. Various tools require ADB and other components to be installed on the PC for proper functioning. Fastboot is used to issue various commands like for flashing a recovery or a kernel. It is also used in commands related to bootloader unlocking. You can use any of the two tools listed below for ADB and Fastboot commands. First one is a full custom guide, and requires heavy installation while Minimal ADB and Fastboot Installer require a mere ~2MB install. However, the first one is more stable and long-lasting. Choose the one suitable for you.
How to Install ADB and Fastboot Drivers – TechGlen
Minimal ADB and Fastboot Installer – Download
2.Sony Xperia T2 Ultra Dual USB Drivers:
Sometimes, you might get the error, waiting for device or similar errors while issuing commands or using any tool. This is mainly due to faulty connection. If you have properly connected your phone with your pC, via a healthy cable and phone is being charged but not being recognized, then the problem is USB drivers. When a phone is connected, PC searched for drivers online and also on PC. You can install USB drivers beforehand and when you’ll connect PC with phone, it will install all the USB drivers automatically. Download Flashtool from the following page, install it, navigate to its installation folder and locate the drivers folder. Install drivers specific for Xperia T2 Ultra Dual, including fastboot and flashmode drivers. Make sure that PC installs all these drivers when you connect it.
Sony Xperia T2 Ultra Dual USB Drivers – Download Here
3.Battery must be charged over 50%:
This is one pf the most important precautions and requirements. You must be aware of the fact that most OTA updates can be installed only if battery is charged more than 50%. This is for the safety of device. The device must not turn off during the whole process. Since these are custom methods, phone may enter a bootloop or may plunge into some other problem. Low battery can be a critical issue in these cases. Therefore, you must charge your phone above 50%.
4.Check your Phone Model:
Many times I have seen people bricking their devices because of their negligence. Note that there are several model numbers, with prominent changes for almost every device out there. Therefore, you must confirm that the given guide is for your device’s model number. As an additional precaution, you must also check that the guide is for your phone’s Android version. This is not necessary in all cases. You can check model number and Android version by navigating to Settings > About Phone.
5.Do not turn off Computer during Updating Process:
If either your phone or PC goes down in the mid of process, you might end up bricking up your precious device. Therefore, make sure that your PC will not turn off or restart during the process. If you are using Windows, make sure that there are no pending updates to be installed in, for example ten minutes. PC will restart automatically, disturbing everything. Therefore, make sure that your PC will remain turned on during the whole process.
Also note that devices are not bricked in every case. It is very rare indeed. however, we must always choose the safe path.
6.Backup all your important Data:
Most custom methods will wipe all dat stored on the device. Some methods might not do so but a custom method can make your phone end up in a bootloop and then a factory reset will be essential. Therefore, always make a backup of your device before anything custom. Here is a guide for non-rooted phones, which guides your through all steps to back up a non-rooted device.
BACKUP GUIDE For NON-ROOTED DEVICES
You must backup all media files stored in internal storage. As a safe precaution, you might remove SD Card while doing it, however it has never caused anyone any kind of issue. All deleted applications can be installed from Play Store My Apps tab.
If your device is rooted then you have better options for making a backup of your device. You can backup each and every settings along with all applications and all system files along with it. It is pretty useful for restoring your phone to previous state without much hustle. Here is the recommended guide for rooted users.
BACKUP DATA WITH TITANIUM BACKUP.
6.Use correct commands for your smartphone:
You must pay close attention to all the commands described here. You must follow them closely in order to avoid anything unplanned and unpleasant, for that matter. Therefore, always confirm before executing a command.
7.Enable USB Debugging:
Developer Options are, as the name indicates, for development purposes. They are available in all Android devices. The most used and talked about option is USB Debugging. It allows your phone to be handled by PC. You can execute direct commands to your phone via PC. Here is the list of ADB commands, which can be used with USB Debugging enabled. You can also recover data using ADB commands. Here is complete guide.
To enable USB Debugging, navigate to Settings > Developer Options and enable USB Debugging. Note that in Android 4.2.x and higher, developers options are hidden by default. To unlock these, navigate to Settings > About Phone and locate the build number. Tap is 7 times and you will see a pop up message saying “You are now a developer”.
8.Backup TA Partition:
TA Partiton contains very important DRM Keys. Losing TA partition also means that BE2 will not work in Album app on T2 Ultra. Warranty cannot be gained back by re-locking the bootloader, without TA partition. There is no way to backup TA partion on T2 Ultra for now and rooting will require unlocking bootloader, which will make you lose TA partition. Althorugh there is no apparent difference in images quality after unlocking bootloader, this is your own choice. A root method without unlocking bootloader is not yet available and it is likely to be released in August this year. You can wait or unlock the bootloader. Choice is yours. You can check the folllowing method of making a backup of TA partition.
How to Backup TA Partiton of Xperia Devices
Disclaimer:
Remember that all processes like rooting, flashing and manual updating are custom methods. They have no concern with Google or mobile manufacturer. Follow every step carefully to avoid any mishap. Owner of site will not be held responsible in case of any mishap. Do it at your own risk. Rooting and flashing custom ROMs will also void warranty.
This is the official method to unlock bootloader of T2 Ultra Dual.
How to Unlock Bootloader of Xperia T2 Ultra Dual
Dial *#06# and note down the IMEI code of your device anywhere
Now dial *#*#7378423#*#* and navigate to Service info > Configuration > Rooting Status
Now look for Bootloader Unlock Allowed
If Bootloader Unlock Allowed: Yes, then you may proceed
Now go to this page and accept all legal terms. Then enter your name and E-Mail address where you will receive unlock key from Sony
Now turn off your device completely
Start Minimal ADB and Fastboot Installer from Start menu
Hold volume up button and plug in USB cable in mobile’s port. You must have plugged in the USB in computer’s port already!
Do not leave the button until you see that LED has turned below
Wait for 10 seconds, if colour of LED does not change, then continue
(Optional) If LED colour changes and starts charging, then you need to install Fastboot drivers for your smartphones
(Optional) To do so, Install Flashtool from Here, navigate to the folder where it is installed, locate drivers folder, run exe file and installFlashtool drivers, Fastboot drivers and Drivers specific for Xperia T2 Ultra Dual
Once in fastboot mode, type fastboot.exe -i 0x0fce getvar version in Minimal ADB command prompt and press Enter
You will get a response, for example 0.006s
This is a good sign! Now continue
Now type fastboot.exe -i 0x0fce oem unlock 0xKEY and press Enter. (Replace “KEY” with the unlock key you got from Sony in your Mail)
Bootloader will be unlocked in few seconds
It will wipe all data on internal SD Card only, so you better make a backup before doing this
Now lets continue to flashing process
Required Downloads:
T2U_DooMLoRD_AdvStkKernel_FW-253_v01.img (If you want to appreciate DooMLoRD’s work, consider a donation for him)
SuperSU
How to Install CWM 6 on Xperia T2 Ultra 19.0.D.0.253 firmware:
After downloading CWM kernel zip (Its not the actual name of file, just a reference name), place it in internal or external SD Card of your smartphone
Rename the downloaded file to boot.img
Paste this file inside the folder where you have installed Minimal ADB and Fastboot
Now turn off your smartphone completely
Plug in mobile’s USB in cable in PC port only
Hold Volume up button and plug in USB cable in mobile’s port
LED will turn blue (If it does not remain blue for long, then read Optional part in bootloader unlocking method explained above
Once you are successfully in fastboot mode, then you can continue
Now type Fastboot flash boot boot.img and press Enter
After flashing is completed, type fastboot reboot and press Enter
As soon as you see purple colored LED, start pressing volume down button repeatedly, until you are in CWM mode
There are two ways to navigate in this CWM recovery
You can navigate with volume buttons and make a selection with power button
Another way of navigating is by swiping your finger on empty area in recovery
Swipe up to move up, swipe down to move down, swipe right to make a selection and swipe left to go back
After installation is complete, go back to main menu and reboot your smartphone
Congrats! You have successfully installed CWM custom recovery on your smartphone
How to Root Xperia T2 ULtra Dual 19.0.D.0.253 firmware:
Copy the downloaded SuperSU zip in phone’s SD Card
Now boot into CWM
Navigate to install zip from SD Card
Now navigate to the folder where you have put the downloaded SuperSU file
Select the file and confirm its installation
Once the installation is complete, reboot your device
That’s it! Now your Xperia T2 Ultra Dual is rooted and CWM installed on 4.3 253 firmware
Got a question? Ask me in the comments below