U are stuck in boot loop...
100% solution...
luckly we have a way to get out of it...
Dont worry. Just follow the following steps and your phone will shine like a new one...
The following procedure is fully trust worthy and not harmful. It is supported by sony itself.
Download the androxyde flashtool first..
From here...
https://userscloud.com/kb6tr3bcuecr?_e_pi_=7,PAGE_ID10,4795418019
Now download the official .ftf file for t2 ultra
The firmware is 5.0.2 lollipop sony official
(dont worry the file is fully official)
from here..
https://drive.google.com/file/d/0B1AAC4lt7nzONno1N09KRDNVSUk/view?usp=sharing
Now follow the following steps carefully...
1. Firstly force shut down your t2 ultra by pressing the soft key near the slot for sim card or by pressing the power and vol up button untill you feel vibr 3 times.
2. Install the flashtool.
Flashtool will automatically create few folders in c drive
3. Paste the downloaded ftf file into 'firmware' folder in c drive>>users>>(your user name)>>.flashtool>>firmware.
4. Open the flashtool and let the process complete.
(open 'flashtool x86')
5. Now minimise the flashtool and again go to the flashtool folder.
You will find a folder for 'flashtool drivers.'
run the containing file.
Now you need to install the drivers required for the process.
Select (check) drivers for 'fastboot,flashmode,xperia t2 ultra drivers'
Say 'install'
return back to flashtool...
5. Now while keeping vol up button of t2 ultra pressed connect the phone to computer using only the original sony usb data cable.
A green led will blink.
6. The flashtool will say 'device connected in flash mode'
7. Now click on 'black lightning thunder icon' on left top corner below 'file' section.
8. Say flashmode.
9. Now the flashtool will automatically detect the ftf file for t2 ultra. If not detected browse to the folder containing ftf file.
10. Now in the 'wipe' section in the right side of flashtool window 'check' all the options like wipe appslog, cache, data.
Now click on flash and stay calm till the process ends.
11. Now when the process ends the flashtool will say ' flash complet ' dont hurry!! Do not turn on your phone..
12. First disconnect your phone from pc. Do not close the flashtool.
And now again connect your phone to pc but this time while connecting your phone to pc keep volume 'down' button pressed. A blue led will glow.
13. Flashtool will say that 'device is connected in fastboot mode'.
14. Now again click on 'black thunder icon' but this time click on 'fastboot mode'
15. Number of options will appear. Select ''reboot to system''. And your phone will automatically turn on. Now unplug the cable and enjoy...
Sent from my D5322 using XDA Free mobile app