T2 Ultra stuck in a bootloop after Supersu update

[wrabbit24]

Hello,
My phone which is not a dual sim is stuck in a bootloop. I have rooted the phone previously then installed Supersu, however i didn't flash any recovery. About four days ago Supersu ask for an update, so i updated it. Then the app ask to reboot, after i press the reboot button then it is now stuck in a bootloop. I can't reset it now since i didn't flash any recovery inside. Is there any way to fix this now? I tried the Xperia companion software i downloaded but it could not detect my phone.

 

[brosers]

Same problem

Hi, I had the same issue with my T2 ultra.
I hope you have some backup of your datas, 'cause to solve the problem I had to make a factory reset which made me loose root, so I had to root it again. I followed this tutorial: Sony XPERIA T2 Ultra ROOT and Recovery by Jozinek.
1 hour of work and the phone is alive
After that you have to download SuperSU v. 2.79. In the specific post from Chainfire https://www.xda-developers.com/chainfire-recommends-staying-in-supersu-2-79-for-xperia-users/

I hope I've been useful and don't worry, this method is not difficult as it may seem :good:
Bye

 

[wrabbit24]

So how can I fix it now? My phone is in the bootloop and I didn't make any backup. I was able to download the firmware from the xperia website but how can I flash that in when I don't have a recovery mode to boot in?

 

[brosers]

So how can I fix it now? My phone is in the bootloop and I didn't make any backup. I was able to download the firmware from the xperia website but how can I flash that in when I don't have a recovery mode to boot in?

You have to follow this tutorial step by step which allows you to have first root and then to install a recovery:
https://forum.xda-developers.com/t2-ultra/general/sony-xperia-t2-ultra-root-recovery-t3213461
First make a factory reset on your phone by opening the sim slot and push the little blue button with something not too sharp. The phone will be turned off.
Then you have to do everything that the tutorial says and the go read the second link that i gave you in the previous post.
If i suggested you this method it's because for me it worked. I'm a newbie myself and i've started some months ago so i'm not an experct but i hope i'm helping you.
If you need more let me know and i can see what i can do.
See you soon, in case

 

[flux99]

if you got no more options, just use flashtool.

 

[wrabbit24]

the flashtool won't recognize my phone even though i did installed the drivers.

 

[wrabbit24]

Got it! Thanks for all the help. I was flashing a wrong firmware.

 

[Blue Rose]

no need for all that.. just downgrade to SuperSU 2.79

1. go to supersu.com download page
2. download "Recovery V2.79 Flashable.zip"
3. copy it to your SD card root
4. flash it with recovery & you are done