Database Develop

Flashed Xperia T with DooMKernel - Now Bricked?

Hi Guys,
Flashed v2 of the kernel using flashtool and it seemed to randomly reboot and crash and be quite laggy etc for some reason.
Rebooted the phone a few times and phone seemed to work and went into sleep. Tried to turn phone on and it is acting as if the battery is as flat as a pancake, no lights nothing on the screen and won't turn on.
Have tried to charge it overnight and still nothing.
Only used the phone for 2days so not sure if it has bricked or it is just a coincidence and the phone was faulty?
Xperia T was running Android 4.1.2 Build 9.1.A.0.489 with bootloader unlocked
Thanks

karlywarly said:
Hi Guys,
Flashed v2 of the kernel using flashtool and it seemed to randomly reboot and crash and be quite laggy etc for some reason.
Rebooted the phone a few times and phone seemed to work and went into sleep. Tried to turn phone on and it is acting as if the battery is as flat as a pancake, no lights nothing on the screen and won't turn on.
Have tried to charge it overnight and still nothing.
Only used the phone for 2days so not sure if it has bricked or it is just a coincidence and the phone was faulty?
Xperia T was running Android 4.1.2 Build 9.1.A.0.489 with bootloader unlocked
Thanks
Click to expand...
Click to collapse
Flash the stock kernel that i linked in that thread. Its on the first or second page of his thread

gregbradley said:
Flash the stock kernel that i linked in that thread. Its on the first or second page of his thread
Click to expand...
Click to collapse
Thanks for your reply
I can't seem to get a response when connecting the phone via USB to the PC.
Tried holding the volume up button whilst connecting the USB and also with the volume down button to no avail.
Any ideas?

karlywarly said:
Thanks for your reply
I can't seem to get a response when connecting the phone via USB to the PC.
Tried holding the volume up button whilst connecting the USB and also with the volume down button to no avail.
Any ideas?
Click to expand...
Click to collapse
to get into fastboot try this.
Hold volume up button. Keep it pressed. Insert USB cable. Now press and hold the power button untill the phne vibrates and immediatley let go of both buttons

gregbradley said:
to get into fastboot try this.
Hold volume up button. Keep it pressed. Insert USB cable. Now press and hold the power button untill the phne vibrates and immediatley let go of both buttons
Click to expand...
Click to collapse
No joy unfortunately, just tried this on another PC to rule that issue out as well.
It's looking like i'm going to have to send it back for a repair me thinks?

gregbradley said:
to get into fastboot try this.
Hold volume up button. Keep it pressed. Insert USB cable. Now press and hold the power button untill the phne vibrates and immediatley let go of both buttons
Click to expand...
Click to collapse
I know i'm probably clutching at straws, but is there absolutely anything else I could try?

Put it on charge and eave it for 24 hours.
Sometimes this brings it back to life.
I take it you have done the hold power button and volume up button for 30-40 seconds untill it vubrates 3 times and then tried to turn it on.

gregbradley said:
Put it on charge and eave it for 24 hours.
Sometimes this brings it back to life.
I take it you have done the hold power button and volume up button for 30-40 seconds untill it vubrates 3 times and then tried to turn it on.
Click to expand...
Click to collapse
Yeah, tried that a few times, unfortunately nothing happened no vibrate or anything.
Will try putting it on charge again for 24 hours and then see what happens, had the phone on charge at the plug socket for around 8 hours last night but nothing change, no charging light or anything else.
I will try sending it back to the supplier I got the phone from if it doesn't spring back to life after charging for 24hours , I'm presuming that in the UK it could be just a simple swap?

Depends on the retailer/network. I worked for a UK network for 5 years. Outside of 7 days a device went off for a repair. Cpw do a 28 day exchange, not sure about all networks etc you'd have to check the returns policies.
Sent from my LT30p using xda premium

av4tar said:
Depends on the retailer/network. I worked for a UK network for 5 years. Outside of 7 days a device went off for a repair. Cpw do a 28 day exchange, not sure about all networks etc you'd have to check the returns policies.
Sent from my LT30p using xda premium
Click to expand...
Click to collapse
I think what I should be asking really is that if they insist on a repair, would they go the whole hog to test if it had been flashed with non sony stuff, would that be highly likely or just simply swap the motherboards without question?

gregbradley said:
Put it on charge and eave it for 24 hours.
Sometimes this brings it back to life.
I take it you have done the hold power button and volume up button for 30-40 seconds untill it vubrates 3 times and then tried to turn it on.
Click to expand...
Click to collapse
I've let the phone charge for a few hours and now when trying to turn on the phone, the notification led now flashes red where as before it would not do anything when trying to turn on.
When connecting the phone to PC it still isn't detected.
Ive tried to search for what the notification colours mean but couldn't really find anything.
Is this anything hopeful?

karlywarly said:
I've let the phone charge for a few hours and now when trying to turn on the phone, the notification led now flashes red where as before it would not do anything when trying to turn on.
When connecting the phone to PC it still isn't detected.
Ive tried to search for what the notification colours mean but couldn't really find anything.
Is this anything hopeful?
Click to expand...
Click to collapse
Yes, but leave it on charge untill tomorrow...then try the hard reset and turn on.

Then just keep it on the charger. Red led means low battery
Sent from my phone using XDA Premium

gregbradley said:
Yes, but leave it on charge untill tomorrow...then try the hard reset and turn on.
Click to expand...
Click to collapse
Plugged it back in to the wall charger and it had a solid red light for around 5mins which I haven't had before when trying to charge it.
Will leave it plugged in now till tomorrow.
Thanks for your help so far

From my experience the warranty states if you modify the software it voids the warranty. If it's bricked it could be a pcc brick, a friends XT died that way.
So an engineer may just say it's faulty and exchange it. Hard to say but from what you've said it may come back on now it's charging.
Similar issue with my xperia s but it came back on after several minutes
Sent from my LT30p using xda premium

gregbradley said:
Yes, but leave it on charge untill tomorrow...then try the hard reset and turn on.
Click to expand...
Click to collapse
Hi Greg,
Left the phone on charge over night and have tried connecting the phone to PC and managed to get some kind of response when holding either the volume up button or volume down button and connecting to PC and detects the phone as a USB input device for just a second or so, the phone will then have a red LED light again after this.
I connected the phone to PC so I could monitor anything that happened easier and noticed that every now and then the red light will come on for a few seconds and then go off again.
Could I possibly have not left the phone on charge long enough at the plug socket?

Hi,
I had the same problem. When the light turns red wait until the light goes out. Make sure you have flashtool open and make sure you only flash the kernel. Now when the red light goes out hold volume down and plug in the usb cabel connecting to your pc, a green light wil appear. Now really fast flash only the kernel. The phone will go into a bootloop once and goes out again. Now put on the homecharger and wait untill it is about 50 percent. Now put the phone on and everything works as before.
Sent from my LT30p using xda app-developers app

Zoeriva said:
Hi,
I had the same problem. When the light turns red wait until the light goes out. Make sure you have flashtool open and make sure you only flash the kernel. Now when the red light goes out hold volume down and plug in the usb cabel connecting to your pc, a green light wil appear. Now really fast flash only the kernel. The phone will go into a bootloop once and goes out again. Now put on the homecharger and wait untill it is about 50 percent. Now put the phone on and everything works as before.
Sent from my LT30p using xda app-developers app
Click to expand...
Click to collapse
Can I flash with any stock Kernel that is made for the Xperia Tor does it need to be a particular one that will match the firmware that is on the phone?

karlywarly said:
Can I flash with any stock Kernel that is made for the Xperia Tor does it need to be a particular one that will match the firmware that is on the phone?
Click to expand...
Click to collapse
flash the stock kernel for your FW.
Load the FW into flashtool and exclude everything except kernel.

gregbradley said:
flash the stock kernel for your FW.
Load the FW into flashtool and exclude everything except kernel.
Click to expand...
Click to collapse
There doesn't seem to be a Build 9.1.A.0.489 (phone had android 4.1.2 and phone is factory unlocked) in the Kernal section in your thread unless I am missing the point?
Downloaded the stock kernel that was in the DooMKernal thread you posted but that doesn't seem to be compatible with flashtool as it is in img and elf files
Sorry for acting dumb.

Phone wont boot (only while USB is connected)

I'm having the weirdest problem.
My Xperia Z wont boot up, it will only boot when i have USB in my PC and connected to the Xperia Z.
When I disconnect the USB the phone shuts down in about 3-15 seconds.
I tried to reflash the stock tft via Flashtool.
I tried to reflash via SUS
I tried to reflash/repair via PC Companion.
At the moment stock firmware is installed but the problem is still there.
I tried to Google but I cant find anyone with the same problem.
Please help!

What's your battery like because to me is sound like a battery problem, USB is supplying power and a soon as you remove power it dies,
Boot phone up and do a service test on battery *#*#service#*#*
A maybe completely wrong
P. S. Have you had your phone near water what colour is the paper under your tabs (should be white not pink)
Sent from my C6603 using xda premium

i have the same thing ...
midego said:
I'm having the weirdest problem.
My Xperia Z wont boot up, it will only boot when i have USB in my PC and connected to the Xperia Z.
When I disconnect the USB the phone shuts down in about 3-15 seconds.
I tried to reflash the stock tft via Flashtool.
I tried to reflash via SUS
I tried to reflash/repair via PC Companion.
At the moment stock firmware is installed but the problem is still there.
I tried to Google but I cant find anyone with the same problem.
Please help!
Click to expand...
Click to collapse
I have the exact same problem! have you found a solution yet? i'm thinking it's a hardware problem because of the fact that i have had this problem on different ROMs and even when i flashed it back to original firmware using sony's flastool.
The battery test under *#*#service#*#* says there's nothing wrong with it...
It's getting really frustrating actually... Phone is practically unuseable...

i think your phone does not turns off, im having the exact same problem, try put the screen to sleep every 30 minutes, if it last 30 minutes with the screen on, then your phone is having the same problem i have:
something like the volume up button "always pressed" so the power button doesnt react because its like detecting hard reset combination.
if the screen sleeps, you press the power button it does not come up, if you connect the usb, screen comes up. phone is not off.
if its like that, im glad i helped at least identify the problem (if you find a solution other than sending to sony (they'll charge me because my warranty is void) PLEASE TELL ME
EDIT: I FIXED IT!!
http://forum.xda-developers.com/showthread.php?p=44980996#post44980996

blackknigt said:
i think your phone does not turns off, im having the exact same problem, try put the screen to sleep every 30 minutes, if it last 30 minutes with the screen on, then your phone is having the same problem i have:
something like the volume up button "always pressed" so the power button doesnt react because its like detecting hard reset combination.
if the screen sleeps, you press the power button it does not come up, if you connect the usb, screen comes up. phone is not off.
if its like that, im glad i helped at least identify the problem (if you find a solution other than sending to sony (they'll charge me because my warranty is void) PLEASE TELL ME
EDIT: I FIXED IT!!
http://forum.xda-developers.com/showthread.php?p=44980996#post44980996
Click to expand...
Click to collapse
delete

[Q][SOLVED] Phone will not respond when trying to update

I have the Xperia T and I am trying to update to 4.3, I had tried to use flashtool, but the phone isn't recognised by the computer when I plug in the cable holding the down button. Now the update is finally here for me I tried using PCC but again having the same issue. I have tried two different computers and all the USB ports on them. I have also fully switched off the battery (holding down the power and up button keys for 10 seconds).
I am stumped as to what is wrong with the phone??
thanks

Can no one suggest anything I could try? I have a feeling its a hardware fault, but it seems like a strange one at that... I dont know if its related but the phone also sometimes doesn't wake from sleep, it seems to be awake but the screen is not on, which requires me to do a hard restart
I am really desperate! thanks

adsada arc said:
Can no one suggest anything I could try? I have a feeling its a hardware fault, but it seems like a strange one at that... I dont know if its related but the phone also sometimes doesn't wake from sleep, it seems to be awake but the screen is not on, which requires me to do a hard restart
I am really desperate! thanks
Click to expand...
Click to collapse
turn of your phone. open flashtool. do not connect the phone to pc. select the firmware and click on flash,. after a few seconds it asks for the phone to connect. the hold the vol - button and plug in the usb. release the vol - button after the green light turns on. this may solve your issue

romeoofair said:
turn of your phone. open flashtool. do not connect the phone to pc. select the firmware and click on flash,. after a few seconds it asks for the phone to connect. the hold the vol - button and plug in the usb. release the vol - button after the green light turns on. this may solve your issue
Click to expand...
Click to collapse
I have tried this, and it still does not work
thanks for the suggestion though

Interesting update (well not really), but I did some troubleshooting and stuff and found that when plugging my phone into the charger when it is switched off, it doesn't respond either (i.e. boot up). So I have a feeling that its the actual phone with a fault such as damaged pin in the usb port that relates to power when the phone is switched off?

adsada arc said:
Interesting update (well not really), but I did some troubleshooting and stuff and found that when plugging my phone into the charger when it is switched off, it doesn't respond either (i.e. boot up). So I have a feeling that its the actual phone with a fault such as damaged pin in the usb port that relates to power when the phone is switched off?
Click to expand...
Click to collapse
I have the same problem.
When the phone is turned off it won't charge, either wiht the wall charger or with the USB cable connected to the computer.
I've sent an email to SONY but they told me so sent it to tech support.
It's not very easy to do it where I am so I'm looking for some other options.
I also noticed it when I was trying to update to 4.3.
PC Companion isn´t a solution since it asks to connect the phone to the PC while turned off pressing the volume down button, even to try the repair.
Can someone help?

Found the issue here http://forum.xda-developers.com/showthread.php?t=2018466
Such a weird problem, but unplugging and reconnecting the battery solved all the issues I was having!
FrankieZero said:
I have the same problem.
When the phone is turned off it won't charge, either wiht the wall charger or with the USB cable connected to the computer.
I've sent an email to SONY but they told me so sent it to tech support.
It's not very easy to do it where I am so I'm looking for some other options.
I also noticed it when I was trying to update to 4.3.
PC Companion isn´t a solution since it asks to connect the phone to the PC while turned off pressing the volume down button, even to try the repair.
Can someone help?
Click to expand...
Click to collapse
Have a look at the thread link above, very simple to solve just take off the back cover and disconnect the battery for a couple of minutes

[Q] Xperia Z1 C6903 won't turn up, just red light blinking

Hello, sorry if this question had been posted before. I just confusing with my Xperia Z1. It's just blank screen, no Sony logo, no boot animation, etc.
I've tried to hold power+vol up but nothing happen. When i put the charge on and i press the power+vol up, it vibrate three times and nothing happen.
What should i do with this?? I hope it's not hardware failure.
Thx for the answer and suggestion.

did you flash anything prior to it going like that?
Sent from my C6903 using Tapatalk

7supreme said:
Hello, sorry if this question had been posted before. I just confusing with my Xperia Z1. It's just blank screen, no Sony logo, no boot animation, etc.
I've tried to hold power+vol up but nothing happen. When i put the charge on and i press the power+vol up, it vibrate three times and nothing happen.
What should i do with this?? I hope it's not hardware failure.
Thx for the answer and suggestion.
Click to expand...
Click to collapse
When you hear the three times vibration then you shutting down your phone and after that the phone is turned off completely, then leave it under wall charger via USB or Dock for minimum 4 hours, if it do not turn on then you have to flash a new Firmware OR Repair via PC Companion. Download Official Sony PC Companion and repair your phone. Other way is to use Flashtool and download the latest FTF from Mega Collection and flash it. Then it should turn on.

hi
i have the same problem with my z1 xperia
the pc companion wont see my phone to preform any kind of repair
any ideas
thanks

if nothing is happening just the LED red blinks even when you put the device in the charge, its hard bricked and will be fixed just with opening the phone and relive it with test point ...
maybe this thread will help you:
http://forum.xda-developers.com/showthread.php?t=2646405

7supreme said:
Hello, sorry if this question had been posted before. I just confusing with my Xperia Z1. It's just blank screen, no Sony logo, no boot animation, etc.
I've tried to hold power+vol up but nothing happen. When i put the charge on and i press the power+vol up, it vibrate three times and nothing happen.
What should i do with this?? I hope it's not hardware failure.
Thx for the answer and suggestion.
Click to expand...
Click to collapse
If it's brick, no prob, let's begin
Requirements:
The latest Flash Tools version, the latest FTF file of your phone, or any FTF file you want
Plug your phone to AC charger for about one or two minutes, and if you see red LED, now your phone is OK
1) If your phone has more than 50 percent charges, you can unplug it
2) If it has less 50 percent, let it charge for about an hour or more till it reaches 70 percent
So, no matter the first way or second, after you unplug it, now you can now connect your phone via USB and flash it
If you do everything correctly and if nothing goes wrong, after flashing, you can use your phone without any problem
If you couldn't do it, inform me to help you more

Look at the micro sd slot. Is there a red stripe? Or white?
If red, it's a water damage
Sent from my C6903 using XDA Free mobile app

I had also a blinking light.. it was a broken accu.

l92 said:
Look at the micro sd slot. Is there a red stripe? Or white?
If red, it's a water damage
Sent from my C6903 using XDA Free mobile app
Click to expand...
Click to collapse
It happened exactly the same with mine. I was on stock rom, and went to the swimming pool with it. But the stripe is white.
I cannot turn it on and only get the red light blinking when is plugged into the charger...
Help...

Miguel Pereira said:
It happened exactly the same with mine. I was on stock rom, and went to the swimming pool with it. But the stripe is white.
I cannot turn it on and only get the red light blinking when is plugged into the charger...
Help...
Click to expand...
Click to collapse
Try the hard brick fix (if you have warranty send to Sony instead). I doubt it'll do anything because it seems by your decription the hardware is damaged physically, but its worth a shot.

kentexcitebot said:
Try the hard brick fix (if you have warranty send to Sony instead). I doubt it'll do anything because it seems by your decription the hardware is damaged physically, but its worth a shot.
Click to expand...
Click to collapse
I already sent it to the warranty. Now we play the waiting game...

zony xperia z1 bricked
I have the same problem !! PLS HELP !! THE PHONE IS DEAD !! My pc don`t recognize the phone !! no led... the phone not charging! what to do?? help please my z1 bricked today while updating Monster'$ Rom my Phone is entirely lifeless ... no LED light, NOTHING
When connect to PC... nothing at all happens, doesn't even pick up the phone!
Have tried VOL + and power
VOL - + power
VOL - and power
Still NOTHING... phone is DEAD
Please help me friends

Please Help any Dev!!
Please i need help, i hard bricked my z1 c6903 ,restoring a backup with unlocked bootloader , this time the pone is totally dead. When in plugg in it blinks a red light.Im reading all about this and im a bit confused ,can anyone help me please?I really appreciate if u can.Best regards

SANTUMIL said:
Please i need help, i hard bricked my z1 c6903 ,restoring a backup with unlocked bootloader , this time the pone is totally dead. When in plugg in it blinks a red light.Im reading all about this and im a bit confused ,can anyone help me please?I really appreciate if u can.Best regards
Click to expand...
Click to collapse
srichinu said:
I have the same problem !! PLS HELP !! THE PHONE IS DEAD !! My pc don`t recognize the phone !! no led... the phone not charging! what to do?? help please my z1 bricked today while updating Monster'$ Rom my Phone is entirely lifeless ... no LED light, NOTHING
When connect to PC... nothing at all happens, doesn't even pick up the phone!
Have tried VOL + and power
VOL - + power
VOL - and power
Still NOTHING... phone is DEAD
Please help me friends
Click to expand...
Click to collapse
7supreme said:
Hello, sorry if this question had been posted before. I just confusing with my Xperia Z1. It's just blank screen, no Sony logo, no boot animation, etc.
I've tried to hold power+vol up but nothing happen. When i put the charge on and i press the power+vol up, it vibrate three times and nothing happen.
What should i do with this?? I hope it's not hardware failure.
Thx for the answer and suggestion.
Click to expand...
Click to collapse
ali_assaf said:
hi
i have the same problem with my z1 xperia
the pc companion wont see my phone to preform any kind of repair
any ideas
thanks
Click to expand...
Click to collapse
NiM72NiK said:
if nothing is happening just the LED red blinks even when you put the device in the charge, its hard bricked and will be fixed just with opening the phone and relive it with test point ...
maybe this thread will help you:
http://forum.xda-developers.com/showthread.php?t=2646405
Click to expand...
Click to collapse
Drain your battery completely
By Pressing and holding volume up and power button for 15 second, no vibration dont worry just hold it for 15 seconds and forget your phone for 1-2 days
Get working charger and usb cable check it then connect charger to phone there should be red light
Leave your phone for 3-4 hours
Now disconnect your phone from charger
Again check usb cable and drivers in pc
Open flashtool and get stock ftf ready for flashing
Once the dialog box appears with phone's animation
press and hold just volume down button and connect your phone with pc and immediately Release volume down button as soon as dialogue box disappears
Then disconnect phone when instructed in flashtool and wait for 4-5 minutes
Now try to turn on the phone.
Main thing is to have patience
This should work as i have my phone in same hardbricked state twice and this brought life in my phone back..!

This fixed mine
https://www.youtube.com/watch?v=GelRGJrL08s

sony z1 red light blinking problem
i have sony z1 with red light blinking problem while charging or powering on i tried flashtool with ftf and pc companion my pc not recognice it please help me

I've had exactly the same problem, nothing but the blinking red light. I replaced the battery (around $6 on aliexpress) and the phone worked again!

Berenpak02 said:
I've had exactly the same problem, nothing but the blinking red light. I replaced the battery (around $6 on aliexpress) and the phone worked again!
Click to expand...
Click to collapse
I hope, your solution works for me too. I ordered a battery and waiting for delivering it. If it won't work, I'll write here to help someone like us who wants to order a new battery.
Edit:
After battery changing, the phone worked. I don't know why, but it had been locked and rebooted repeatedly. Then I resetted to the factory settings. After that, it has been started to run well.

Xperia SP is Dead

HELP! My Xperia SP is dead after unlocking bootloader with official way!
It won't turn on even when I tried to boot it up by connecting via usb to laptop.
I tried to charge it, but it's useless
I also tried to force restart it from restart button but it doesn't wake up
HELPP! :crying:
#UPDATE: By some miracle, the phone boots itself up and get working again. All apps are gone (like factory reset). It shut down about 2 hours then suddenly it came back to life. Still don't get it why this can be happening though. But thank God!

reynaldi3 said:
HELP! My Xperia SP is dead after unlocking bootloader with official way!
It won't turn on even when I tried to boot it up by connecting via usb to laptop.
I tried to charge it, but it's useless
I also tried to force restart it from restart button but it doesn't wake up
HELPP! :crying:
Click to expand...
Click to collapse
Have you tried the OFF button on the back?

You should try to connect your phone to pc, press volume button and keep it pressed. Then without releasing the volume button, press the restart button on the back until you see the led (blue or green depending on the volume you pressed). This means you have at the same time : usb + volume + reset button on the back.
You should keep it pressed during 3 to 15 seconds. If this doesn't work, put your phone to charge (on wall charger and preferably with stock charger) during 1-2 hours and try again.

Try reflash a stock ftf

Please provide more information to the things you did. Did you use EMMA or FLASHTOOL?

TLDGames said:
Have you tried the OFF button on the back?
Click to expand...
Click to collapse
Yes, I tried but it still doesn't work, the phone heats up while there is no sign of life. But after 2 hours it turns back on! Weird
pec0ra said:
You should try to connect your phone to pc, press volume button and keep it pressed. Then without releasing the volume button, press the restart button on the back until you see the led (blue or green depending on the volume you pressed). This means you have at the same time : usb + volume + reset button on the back.
You should keep it pressed during 3 to 15 seconds. If this doesn't work, put your phone to charge (on wall charger and preferably with stock charger) during 1-2 hours and try again.
Click to expand...
Click to collapse
I did that multiple times but there was no sign of life. No led pulse, dead screen, but only warm phone. But it came back on after 2 hours
lucasgta95 said:
Try reflash a stock ftf
Click to expand...
Click to collapse
I can't since it won't connect to anything (wall charger, usb, etc). But thank God it has come to life !
Furrydaus said:
Please provide more information to the things you did. Did you use EMMA or FLASHTOOL?
Click to expand...
Click to collapse
I use cmd since flashtool won't recognize my phone even I have install the correct driver. I read all the instructions from Sony web about unlocking bootloader and I suffer this situation. But after 2 hours it turns back on...

reynaldi3 said:
I use cmd since flashtool won't recognize my phone even I have install the correct driver. I read all the instructions from Sony web about unlocking bootloader and I suffer this situation. But after 2 hours it turns back on...
Click to expand...
Click to collapse
You should have followed the unofficiall methods and not sony

reynaldi3 said:
I did that multiple times but there was no sign of life. No led pulse, dead screen, but only warm phone. But it came back on after 2 hours
Click to expand...
Click to collapse
I have the same problem now and you made my hopes up. I was on PAC rom, normally working, but when i picked up my phone, it wasn't responding, OFF button isn't doing anything and my PC even doesn't recognize the phone over USB. So i hope it will be working again later. :fingers-crossed:
Edit: 12 hours later and still no signs of life, so im' doiwnloading ftf and i'm going to try flashing it...

Make sure you have the driver installed for your phone.
1. Download, install and run the driver update utility. Here's the link where you can download it.
http://www.driverscape.com/download/xperia-sp
2. If it doesn't detect your phone, download flashtool from here:
http://www.flashtool.net/downloads.php
Make sure you have the latest ftf image in order to flash to your phone. You can download from here.
http://forum.xda-developers.com/showthread.php?t=2311964
3. Make sure your phone is off by force shut down (clicking the OFF hard key in the back)
4. Open flashtool. Press and hold the volume down key and then connect your phone to the computer by USB.
5. The notification bar will light green indicating that it is connected in flash mode.
You can then follow instructions on how to flash through Google search. If you are able to reach step 5 and don't know how to flash, let me know.

daubh said:
Make sure you have the driver installed for your phone.
1. Download, install and run the driver update utility. Here's the link where you can download it.
http://www.driverscape.com/download/xperia-sp
2. If it doesn't detect your phone, download flashtool from here:
http://www.flashtool.net/downloads.php
Make sure you have the latest ftf image in order to flash to your phone. You can download from here.
http://forum.xda-developers.com/showthread.php?t=2311964
3. Make sure your phone is off by force shut down (clicking the OFF hard key in the back)
4. Open flashtool. Press and hold the volume down key and then connect your phone to the computer by USB.
5. The notification bar will light green indicating that it is connected in flash mode.
You can then follow instructions on how to flash through Google search. If you are able to reach step 5 and don't know how to flash, let me know.
Click to expand...
Click to collapse
Thanks, i know how to flash ftf, but my phone shows no signs of life, when plugged to charger, the LED doesn't light up and i can't go to flash mode aswell. So now it seems that the only thing i can do is to take my phone to repair, as it seems there is some hardware problem...

Dead Xperia SP Also
I have same situation since 21st of December.. I left my Phone on. When I was going to bed. I woke Up and saw this fuzzy blank grey screen, then I pressed the reset button at the back of the phone thinking all will be fine, But since then I've been battling with it. First, No sign of life after plugging, then a day later after I left it connected to my PC, The LED LIGHT turned red, but dead screen. About 15MINS later it goes off, Then comes up again (LED LIGHT) I've tried connecting to PC, it recognises it for about 4seconds and it disconnects automatically, I've tried practically all the method I saw on here.. Rubber band trick,leaving it to charge all night connected to wall charger / PC..All proved abortive, I have been trying to get the MAGIC green LED LIGHT (FLASHMODE) but it never works.. I took it to a repair shop (NOT SONY) He said he only deals with HARDWARE that it wasn't hardware problem, and they then went ahead to flash it.. (I'm out of warranty) STILL NO LUCK.. I'll be glad if anyone can guide me through or come up with a Plausible SOLUTION, 'cause my BREAK has been horrible since my PHONE went M.I.A..... Thank you GUYS

So, finally I'm going to pick up my repaired SP :fingers-crossed:. They thought it was a problem caused by the reset button pushed too hard, but since they've informed me they've changed whole motherboard, the problem must have been somwhere else, maybe they'll tell me where.
(And it seems that despite the fact i've unlocked the bootloader and flashed ROM on it, they will accept it as a warranty repair, because i think they weren't able to get to know that )

My XSP must really hate me. After less than a week since i've picked it up from the repair, it's dead again (everything tried - reset button, leaving it to charge, usb) with no signs of life ... I guess there must be a much bigger problem than just motherboard That means another two weeks with my old slow LG OO. I'm gonna die without it, i've maintained almost a month without it back then, but i had a tablet borrowed for a review. Now it's worse...
Maybe they should give me another XSP instead of trying to repair this one again...

have you considered about the battery?
the battery might be dead for all we know

That may be the problem, but i must also keep in mind that it had its motherboard changed a week ago. Anyway, i took it to the service again, they also said that charger may be causing it, but battery seems more logical to me as there were no problems with charging.
So i have to wait another two long weeks and then i'll know what was it...