[General Questions and Answers] crystaldolly:
Hello.

Well, sorry for bothering you... but I really don't know what to do. I am too lost so the things I wrote here may not have sense :(

There is a recap at the end of this post, so I won't annoy you more than necessary.

Before explaining anything, I will show you my mobile specifications.

My mobile phone was in the 6.1.B.0.599 kernel. Thanks to the user Bin4ry and his application Root and Restore, I could root it and gain superuser privileges, so I could uninstall annoying apps and customize my phone as I wanted with a custom launcher, etc.

Suddenly, every time I reseted the phone, it began to happen a strange thing. I will explain it detailedly.

- I turn on the phone.

- The screen brights with the SONY logo.

- The XPERIA logo appears.

- The phone vibrates shortly and the screen stops brighting.

- The XPERIA logo keeps until an undetermined moment.

- After X time (minutes, hours), Android asks me for the PIN number and starts working normally.

I was tired of this, but I didn't know what to do or why do this happen.

Today I connected the phone to the PC and Sony Companion asked me to update to 6.1.1.B.1.54. I hoped that would help with the problem. What I didn't know is that when I update the kernel, I must root the phone again.

That's because I tried to root the phone again, but the application Root and Restore couldn't do it. I mean, the application did the work, the phone reseted and the problem I had with the Xperia initialization solved, but the mobile kept unrooted.

This is the Root and Restore log:

======================================================================
= This script will root your Android phone with adb restore function =
= Script by Bin4ry (thanks to Goroh_kun and tkymgr for the idea) =
= Idea for Tablet S from Fi01_IS01 =
= (18.12.2012) v17 =
======================================================================

Device type:
1) Normal
2) Special (for example: Sony Tablet S, Medion Lifetab)

x) Unroot

Make a choice: 1
Checking if i should run in Normal Mode or special Sony Mode
Please connect your device with USB-Debugging enabled now
Waiting for device to shop up, if nothing happens please check if Windows ADB-dr
ivers are installed correctly!
1656 KB/s (210390 bytes in 0.124s)
remote object '/system/bin/ric' does not exist
.

Found Sony Backup-Restore.apk
LT26,LT22 etc. mode enabled!

.
Pushing busybox....
3010 KB/s (1085140 bytes in 0.352s)
Pushing su binary ....
2897 KB/s (91980 bytes in 0.031s)
Pushing Superuser app
3908 KB/s (996704 bytes in 0.249s)
Making busybox runable ...
.
Pushing fake Backup
2999 KB/s (73728 bytes in 0.024s)
Extracting fakebackup on device ...
Watch now your device. Select the backup named RootMe and restore it!
Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.L
AUNCHER] cmp=com.sonyericsson.vendor.backuprestore/.ui.BackupActivity }
If all is successful i will tell you, if not this shell will run forever.
Running ......

Good, it worked! Now we are rebooting soon, please be patient!
Waiting for device to come up again....
Going to copy files to it's place
[B]mount: permission denied (are you root?)[/B]
You can close all open command-prompts now!
After reboot all is done! Have fun!
Bin4ry

After I investigated a little in this forum, I learnt that I precisely updated to an unrooteable kernel...

I kept investigating and I found out that the solution was downgrading to the kernel I was, then rooting and finally upgrading again, but to downgrade and upgrade I needed to "flash".

I'm not English, I'm noob in Android world and I'm retard, so I couldn't understand how to flash. I installed FlashTools, but I need to download the kernel and I don't know how to find the correct one for my phone. I don't know if FlashTools needs me to unblock Bootload either, but if I need it, I've already got the code from Sony, though maybe there are other unofficial methods...

Sorry for this huge Bible. I will summarize:

I upgraded from .599 to .54 and I can't root. How can I downgrade the kernel?

I'm sorry again for bothering you and for being so retard in this, but could you help me, please? I would like so much to become root again... You can laugh at me :silly: If I wrote something wrong, please, correct me because I'm not English and I could not realize.

Thank you so much :victory: