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[Q] Xperia U not starting up after rooting via cmd manually through fastboot kernel

My phone is not starting after rooting process it is continuously resarting and also bar color is changed shows 3 colors xperia U
ppls help
I tried to root my phone Xperia U
i tried everything for rooting my phone all are listed below :-
1. One click Root from (oneclickroot.com)
2. Framaroot with Mobogenie
3. universal Androroot 1.6.2
4. Root by Bin4ry v11 (RunMe FR)
5. via CMD fastboot
i can't root my xperia u with above types i unloked the fastbootloader. i also install new kernel.elf file through cmd fastboot
pls help anyone with rooting and again staring up my phone or restore it like new one pls help

rooting and flashing
TO REPAIR UR PHONE :
1. FIRST OF ALL DOWNLOAD FLASHTOOL AND INSTALL IT, THEN GOTO C:>FLASHTOOL>DRIVERS and then run "flashtool drivers.exe" , and check all options.
2. DOWNLOAD XPERIA U ANDROID 2.3 OR 4.0.4 FIRMWARE FROM INTERNET AND PLACE IT IN C:>FLASHTOOL>FIRMWARES BUT BEFORE THAT REMOVE ALL THE OTHERS FILES IN THAT FOLDER.
3. OPEN FLASHTOOL AND CLICK THE FLASH BUTTON.
4. TURN OFF UR PHONE FOLLOW THE ONSCREEN COMMANDS.
5. UR PHONE SHOULD NOW BE WORKING AFTER IT IS FLASHED.
TO ROOT :
1. DOWNLOAD CYDIA IMPACTOR TOOL FROM GOOGLE.
2. RUN IMPACTOR.EXE AND CONNECT UR PHONE , THEN CLICK USB>DRIVER SCAN THEN CLICK START.
3. IF U SEE SU OR SUPERUSER IN UR PHONE THEN IT IS ROOTED OR MAYBE DOWNLOAD IT GOOGLE PLAY.
4. TO MAKE SURE UR DEVICE IS ROOTED DOWNLOAD ROOT CHECKER FROM PLAY STORE.

how can i switch on the xperia its not starting up how i can use flashtool without starting my phone ?
and pls will give me the link for flashtool for xperia U and its firmware 4.0.4 it would be grateful to u pls help me before my parent knows about this

flash the stock firmware first...
for that
You must run flash tool first.
power off phone (take out battery and insert again).
connect phone and pc with usb cable while
press and hold volume down button.
the illumination bar will become green.. and
flash tool will recognize device connected as flash
mode...
then flash the firmware....
flashtool :
http://www.flashtool.net/download.php
stock firmware :
https://drive.google.com/uc?id=0Bzvi81Rg-8meQllGQU42Rmg2Y2s&export=download
video guide on how to flash firmware :http://m.youtube.com/watch?v=KmLqd-afBK4&fulldescription=1&gl=IN&hl=en-GB&guid=&client=mv-google
For rooting Xperia u :
just flash the prerooted kernel using flashtool..
kernel link :http://forum.xda-developers.com/xperia-u/u-development/kernel-transcendence-kernel-t2299748
just extract the Zip file..
search for the kernel.elf or boot.img
(if it is kernel.elf, just rename file to kernel.img)
and flash in fast boot mode...
for fastboot mode :
power off phone (take out battery and insert again).
connect phone and pc with usb cable while
press and hold volume up button.
the illumination bar will become blue.... and
flash tool will recognize device connected as fastboot mode...
press THANKS if I helped you.............

[Q] Disabling MTP Mode and enabling USB Debugging while Phone is Off

Dear Experts,
I Unlocked the Bootloader of My Xperia L using the official Sony way. But after the successful unlocking the Phone is not booting at all. It gets stuck at the Xperia colour theme loading... I gone through various posts and found a solution that I have to Flash my phone using flashtools.
Now I instaled flashtools as well as the required drivers. However when I do the flashing in flash mode, the device disconnects automatically and flashtools says that "make sure you are not in MTP mode". I remember that My phone was in MTP mode when i was unlocking the bootloader and the USB debugging was always on... Now after unlocking bootloader the USB Debugging is showing as off (can be seen in the attached file)
After reading couple more posts about MTP ... I understand that I can't successfully flash unless the phone is out of MTP mode, and USB debugging is on. As my mobile is not booting, I can not go to the settings and tick or untick any of the two.
Please help me with a way to do it. I am attaching a screen print of the flashtools for Ref....
It will be a great relief to me....
Thanks in Advance...

You need to connect your phone is flashmode

TakuyaZ said:
You need to connect your phone is flashmode
Click to expand...
Click to collapse
Every Time I connect the phone in flash mode. once it starts flashing process, the phone automatically disconnects and comes on in normal mode.

elroyjolew said:
Every Time I connect the phone in flash mode. once it starts flashing process, the phone automatically disconnects and comes on in normal mode.
Click to expand...
Click to collapse
i have the same problem here..how can we solve this..i am using Sony Xperia C3

Knightfuryz said:
i have the same problem here..how can we solve this..i am using Sony Xperia C3
Click to expand...
Click to collapse
elroyjolew said:
Dear Experts,
I Unlocked the Bootloader of My Xperia L using the official Sony way. But after the successful unlocking the Phone is not booting at all. It gets stuck at the Xperia colour theme loading... I gone through various posts and found a solution that I have to Flash my phone using flashtools.
Now I instaled flashtools as well as the required drivers. However when I do the flashing in flash mode, the device disconnects automatically and flashtools says that "make sure you are not in MTP mode". I remember that My phone was in MTP mode when i was unlocking the bootloader and the USB debugging was always on... Now after unlocking bootloader the USB Debugging is showing as off (can be seen in the attached file)
After reading couple more posts about MTP ... I understand that I can't successfully flash unless the phone is out of MTP mode, and USB debugging is on. As my mobile is not booting, I can not go to the settings and tick or untick any of the two.
Please help me with a way to do it. I am attaching a screen print of the flashtools for Ref....
It will be a great relief to me....
Thanks in Advance...
Click to expand...
Click to collapse
Make a factory reset

TakuyaZ said:
You need to connect your phone is flashmode
Click to expand...
Click to collapse
how to connect in flashmode without using the buttons?im stock in sony logo and i need to turn on usb debugging to use flashtool

1, the adb drivers aren't installed correctly in your pc
2, don't worry about usb debugging
Just connect the phone to the computer in flash mode by pressing vol down and then plug-in the usb cable to your phone.
Flash tool will recognise it automatically if the drivers are installed correctly
3, then reinstall the stock ROM with flash tool
That's it
You said your device is being disconnected while flashing so
When you start flashing from flash tool start the flashing process
(Without connecting the phone to pc)
After the FTF is extracted flash tool will ask to connect the device
Then just connect your device in flash mode

Nikhil kuttu said:
1, the adb drivers aren't installed correctly in your pc
2, don't worry about usb debugging
Just connect the phone to the computer in flash mode by pressing vol down and then plug-in the usb cable to your phone.
Flash tool will recognise it automatically if the drivers are installed correctly
3, then reinstall the stock ROM with flash tool
That's it
You said your device is being disconnected while flashing so
When you start flashing from flash tool start the flashing process
(Without connecting the phone to pc)
After the FTF is extracted flash tool will ask to connect the device
Then just connect your device in flash mode
Click to expand...
Click to collapse
Hello,
Do you know how to install fastboot or flash mode drivers in Windows 10? Also, the flashtool for me is stuck on "please wait until the end of process", how to make it work?
Note: My device gets recognized in ADB when booted up, but does not when in fastboot or flashmode. (Plugging in cable while pressing vol. down)

Manas1796 said:
Hello,
Do you know how to install fastboot or flash mode drivers in Windows 10? Also, the flashtool for me is stuck on "please wait until the end of process", how to make it work?
Note: My device gets recognized in ADB when booted up, but does not when in fastboot or flashmode. (Plugging in cable while pressing vol. down)
Click to expand...
Click to collapse
the drivers will be on the flash tool folder just open the app then tick drivers for Xperia L (thoshan) and general fast boot drivers.
and use the latest flash tool if you can ( Now I am using a Mac so I have a flash tool which was made for apple. but I used to flash my phone using windows and this is the version of the flash tool "flashtool-0.9.18.5" and this worked fine for me ).
if anything else is needed just reply

[Q] Please need help from someone who's flashed ftf of previous version.(23.0.A.2.93)

im trying to flash ftf 23.0.A.2.93 version using flashtool.... this is what is happening.
1- i have d6603 version, downloaded 23.0.A.2.93 version.
2-installed drivers of z3, drivers from flashmode driver folder.
3- i run flashtool, select the ftf, then i turn off my phone, press volume button up and plug in device, then flashtool after a while says to turn off the device and plug it back in by pressing back button (where i have tried pressing volume up button and plugged in flash aborted/ second time pressed volume down button and plugged in and flash aborted)
what am i doing wrong or what should be done instead???
im gonna need to go back to 23.0.A.2.93 version and then unlock bootloader than root then install recovery and then restore drm keys....i could use some help.
much appreciated.

greatgrandking said:
im trying to flash ftf 23.0.A.2.93 version using flashtool.... this is what is happening.
1- i have d6603 version, downloaded 23.0.A.2.93 version.
2-installed drivers of z3, drivers from flashmode driver folder.
3- i run flashtool, select the ftf, then i turn off my phone, press volume button up and plug in device, then flashtool after a while says to turn off the device and plug it back in by pressing back button (where i have tried pressing volume up button and plugged in flash aborted/ second time pressed volume down button and plugged in and flash aborted)
what am i doing wrong or what should be done instead???
im gonna need to go back to 23.0.A.2.93 version and then unlock bootloader than root then install recovery and then restore drm keys....i could use some help.
much appreciated.
Click to expand...
Click to collapse
Unrelated to your question. But do not unlock the bootloader. The whole reason to downgrade to .93 is to be able to use an exploit so you won't have to unlock BL.

I think you're missing the fastboot drivers for Z3 as the next step of flashtool needs the device in fastboot (as far as I remember).
So just Google Z3 fastboot drivers and install those and you should be good to go (and you need to press volume down I think for fastboot).

greatgrandking said:
im trying to flash ftf 23.0.A.2.93 version using flashtool.... this is what is happening.
1- i have d6603 version, downloaded 23.0.A.2.93 version.
2-installed drivers of z3, drivers from flashmode driver folder.
3- i run flashtool, select the ftf, then i turn off my phone, press volume button up and plug in device, then flashtool after a while says to turn off the device and plug it back in by pressing back button (where i have tried pressing volume up button and plugged in flash aborted/ second time pressed volume down button and plugged in and flash aborted)
what am i doing wrong or what should be done instead???
im gonna need to go back to 23.0.A.2.93 version and then unlock bootloader than root then install recovery and then restore drm keys....i could use some help.
much appreciated.
Click to expand...
Click to collapse
Volume button down while connecting to pc to get to flash mode

[Soft Brick] [Flash Stock] [Recovery] [ADB Driver] Yuphoria [Solution]

Soft Bricking ?
Phone starts and stuck on the Yu logo.
Hard Bricking?
Phone does not start even if the battery is full. Have to go to the service center.
[Note]
1.Make sure that you have 70-80% battery on your phone.
2.You need a PC and a USB cable to connect your phone to the PC.
3.Flashing the factory firmware will wipe all the data present in the internal memory. So, make a backup of that if you can.
[Required Downloads]
1.Download the flash tools.
2. Download the factory firmware (signed fastboot)
3. adb setup drivers.
4. Mirror for drivers manual install here.
5. You can use this tool performs various functions.
# [Install Adb Derives Manually]
1. First of all extract the downloaded file and save it in the computer.
2. Before installation you have to disable the "signature verification" in windows. In windowa 8 or 10 you can do it by going to advanced settings or you can google the way of disabling signature verification.
3. After that turn off the phone and connect it pressing vol up that it will boot in fastboot mode.
4. When you connect the phone go device manager and search for device connected showing error sign.
5. Now click on that device and check for deriver update.
6. Now select the deriver in computer not automatically and select all devices.
7. Now select "have disk"
8. Browse the folder where you had extracted the adb drivers.
9. Now select the drivers file and install.
10. Ignores the Warning and select "always allow"
11. When finished check the device again by connecting to computer in fastboot mode with usb.
# [Flash Factory Firmware]
Steps
1. Extract the flashtools zip in a new folder on the desktop.
2. Extract the factory firmware zip in the same folder and make sure that all of the flashtools files are also present.
3. Now, power off your phone. If you are stuck in a bootloop, then pull out the battery and reinsert it. (Do not switch on the phone.)
4. While pressing the Volume Up key, connect your phone to the PC with the help of a USB cable.
5. You should now see the fastboot logo on your device. If you did, leave the Volume Up key. (If you do not see the logo, retry the process.)
6. Now go to the folder where you extracted the flash tools and factory firmware and run the flash-all.bat by double clicking on it.
7. A command window will open and the flashing procedure will start. (Make sure that your device does not disconnect from your PC during the procedure.)
8. The command window will automatically close once the procedure is completed.
9. Disconnect your device and boot it up by pressing the Power button. The first boot might take around 5-10 minutes to complete.
Congrats!
# [Recovey Installation (Very Easy Method)]
Note
1. Phone must has unlocked bootloader.
2. It must be rooted.
Steps
1. Download the twrp.img file and place it into your phone storage.( you can choose any custom recovery)
2. Now download the app from playstore flashify
3. Now install it and open the app it will require permission for root access, allow the root access.
4. Now open the app and u can backup the current recovery.
5. Now select the "flash" menu and select the "recovry image" and choose the .img file from storage.
6. Then select yes for flashing warning and will says flashing recovery. After completion it will say flash completed.
7. Now select the option button on right top corner and select the reboot into recovery.
8. Now it will reboot into recovery.
Hit "Thanks" if found this thread helpful....​

Thanks for the solution...... it works well !!
Though my yuphoria was working perfectly fine, i wanted to factory reset my mobile for some reasons, which i was not able to do. Both soft and hard custom recovery options were not working (no recovery screen pop up, mobile boots and stuck at YU logo ), tried your solution and it worked.
Just one input for new users like me, where you have asked users to install adb drivers, i tried that part but on running the bat file, the device was not detected, hence had to add yuphoria device drivers from their official site, i am not able to paste the link here but file name is YUPHORIA_drivers-v1.0.zip, also USB debugging option needs to be turned on in developer option for this solution to work.
Rest all steps work exact as you explained.

Sahilsharma said:
Though my yuphoria was working perfectly fine, i wanted to factory reset my mobile for some reasons, which i was not able to do. Both soft and hard custom recovery options were not working (no recovery screen pop up, mobile boots and stuck at YU logo ), tried your solution and it worked.
Just one input for new users like me, where you have asked users to install adb drivers, i tried that part but on running the bat file, the device was not detected, hence had to add yuphoria device drivers from their official site, i am not able to paste the link here but file name is YUPHORIA_drivers-v1.0.zip, also USB debugging option needs to be turned on in developer option for this solution to work.
Rest all steps work exact as you explained.
Click to expand...
Click to collapse
Yup bro its difficult to set bootloader driver for yuphoria. But you can install it manually. But always remember to "disable driver signature verification" before installation and i will update the derivers link for manual installation if you message me the link.

will this work on unlocked bootloader

nickjones1007 said:
will this work on unlocked bootloader
Click to expand...
Click to collapse
"yup"... it will work. There is nothing to do with boot loader. It will flash the stock rom and boot-loader will get locked again. You have to unlock the boot-loader again if you want to flash custom rom again.

And i will get the official ota updates from YU as well ?
Sent from my YU5010 using Tapatalk

nickjones1007 said:
And i will get the official ota updates from YU as well ?
Sent from my YU5010 using Tapatalk
Click to expand...
Click to collapse
yep bro.. you will get the updates and i don't think you know that, there are no restrictions for unlocking/locking boot-loader of YU mobile. I mean the warranty not void if you unlock the boot-loader.

Thnx a lot bro and yeah i knw that ... Actually i'm gonna start installing roms so in case if it goes wrong i just a needed reliable method to get back on stock company's software ....
Thnx again bro
Sent from my YU5010 using Tapatalk

nickjones1007 said:
Thnx a lot bro and yeah i knw that ... Actually i'm gonna start installing roms so in case if it goes wrong i just a needed reliable method to get back on stock company's software ....
Thnx again bro
Sent from my YU5010 using Tapatalk
Click to expand...
Click to collapse
its reliable bro and worked for me when i screwed my phone. But note one thing that you should have installed the adb drivers properly on your computer. Anyway if u screwed up don't hesitate to discuss here.

When i start the flashall.bat the phone restarts and stuck back at the cyanogen logo..!

goudaniket said:
When i start the flashall.bat the phone restarts and stuck back at the cyanogen logo..!
Click to expand...
Click to collapse
Is driver properly installed? Or retry to download setup again if you have done right then
1. boot into bootloader
2. run bat file it will take some time. If all goes well then it will say about relocking of boot-loader.
3. seletct yes and restart.
4. you will see yu logo and it will take 10-15 minutes to load so stay calm! If it doesn't load then try again.

awesome... worked for me

maazkazi91 said:
awesome... worked for me
Click to expand...
Click to collapse
You can simply hit the thanks buttton bro

Can u remember me?

I can't root my YU 5010a

ankityu said:
I can't root my YU 5010a
Click to expand...
Click to collapse
I think you have issue with adb driver .. Is that resolved?

No man
...its still stuck in there..

ankityu said:
No man
...its still stuck in there..
Click to expand...
Click to collapse
Bro i hv updated the thread with steps to install adb drivers. Try it and then report if it works.

What is signed fastboot

ankityu said:
What is signed fastboot
Click to expand...
Click to collapse
Install it . these are the drivers.

[URGENT] Xperia E3 D2202 Stuck on SONY LOGO, Can't Flash with FLASHTOOL

can some one please help me ...:crying::crying::crying:

What happen?

use EMMA ou SEUS (windows) or sony bridge (mac) to repair phone

e3 d2202 wont connect into flash
vincy009 said:
What happen?
Click to expand...
Click to collapse
hello im new
i have xperia e3 d2202 and now stuck on logo
i tried flashing but fails,, my phone wasnt recognized in my pc (The LED lights Green but nothing happens).
The phone connects in Fastboot(with blue LED) and is recognized in Flashtool
can u help me ?

luci morningstar said:
hello im new
i have xperia e3 d2202 and now stuck on logo
i tried flashing but fails,, my phone wasnt recognized in my pc (The LED lights Green but nothing happens).
The phone connects in Fastboot(with blue LED) and is recognized in Flashtool
can u help me ?
Click to expand...
Click to collapse
yeah flash it trough flashtool if its detecting in flashtool its easy check tutorial here or Google it

vincy009 said:
yeah flash it trough flashtool if its detecting in flashtool its easy check tutorial here or Google it
Click to expand...
Click to collapse
yes i have done
i follow instruction how to flash xperia e3 d2202.
I've already downloaded what needed ( file .ftf, drivers, and flashtool)
i use flashtool 0.9.18.6 version
when i press volume - then connect usb cable , the green led indikator turn on but no respond and not recognize on my pc
if i press volume +, my pc recognize it and at fastboot mode
plis help me

luci morningstar said:
yes i have done
i follow instruction how to flash xperia e3 d2202.
I've already downloaded what needed ( file .ftf, drivers, and flashtool)
i use flashtool 0.9.18.6 version
when i press volume - then connect usb cable , the green led indikator turn on but no respond and not recognize on my pc
if i press volume +, my pc recognize it and at fastboot mode
plis help me
Click to expand...
Click to collapse
Press Win key+R, type devmgmt.msc and press enter.
You will see the list of devices connected to your PC. If you connect your phone and your PC recognizes it, the list will refresh.
Try to see if the list refreshes when you put your D2202 into flash mode (with the green LED).
If it refreshes, look if a new device has appeared in any menu.

rmnhg said:
Press Win key+R, type devmgmt.msc and press enter.
You will see the list of devices connected to your PC. If you connect your phone and your PC recognizes it, the list will refresh.
Try to see if the list refreshes when you put your D2202 into flash mode (with the green LED).
If it refreshes, look if a new device has appeared in any menu.
Click to expand...
Click to collapse
thanks for advice
still wont connect
green led has turn, but my pc or even in device manager still no respond
its hardware problem ??

luci morningstar said:
thanks for advice
still wont connect
green led has turn, but my pc or even in device manager still no respond
its hardware problem ??
Click to expand...
Click to collapse
Maybe but I don't know becouse if USB doesn't work fastboot mode wouldn't connect, but it is connecting.
You have to flash a rom through fastboot mode, so you need to find system.img and boot.img from stock rom of a D2202 (unfortunately I have D2203 variant so I can't backup my phone, but I can help you findind the files on XDA) and flash it though flash tool.
You can also try to download an ADB toolbox and run the command:
fastboot erase userdata
(this command will remove all your apps' data but can fix your issue)

rmnhg said:
Maybe but I don't know becouse if USB doesn't work fastboot mode wouldn't connect, but it is connecting.
You have to flash a rom through fastboot mode, so you need to find system.img and boot.img from stock rom of a D2202 (unfortunately I have D2203 variant so I can't backup my phone, but I can help you findind the files on XDA) and flash it though flash tool.
You can also try to download an ADB toolbox and run the command:
fastboot erase userdata
(this command will remove all your apps' data but can fix your issue)
Click to expand...
Click to collapse
flash via fastboot ? tell me how to do that ...
ill try, thnks you

luci morningstar said:
flash via fastboot ? tell me how to do that ...
ill try, thnks you
Click to expand...
Click to collapse
Try these steps
Follow this guide to install ADB toolkit.
Then open Sony Flashtool and select the XF icon.
Find Xperia E3 and select D2202 variant. In the right panel you will see a lot of entries with countries and telephone companies, select one and click in the field of "Available firmware:". Download the rom.
When it finishes, close XperiFirm. Click on thunder icon, select Fastboot mode, connect your phone off with vol + pressed (blue LED) to the PC and then press on Select system to Flash. It will ask for a sin file. You have to select a system_....sin, which is in C:\Users\(your user profile folder)\.flashtool\firmwares\Downloads\D2202_...\
and let process finish.
Then press on Select kernel to Flash and select, in the same folder as before, a file called kernel_....sin
When it finishes you can disconnect your pone and try to power it on.

I have a Xperia E3 D2212 and I made the whole process, the problem is that I could not increase the storage memory and FlashTools no longer recognizes my cell phone as a D2212, it recognizes as a D2203, this is because it changed the Kernel in TWRP . Would you like to go back to the Original Kernel ??