Database Develop

[Q] Xperia T Boot-Loop after Update

Heyho!
I searched almost the whole day & web to find a solution for my problem, and you are my last instance.
My 1 day old Xperia T got into a Boot-Loop, and only the Sony-Logo shows up after starting the phone.
Previous procedure:
I installed the Sony PC Companion 2.1 and updated to 7.0.A.3.195, after this the phone went into the loop.
Now i can't flash any other software because USB-Debugging is off, and i didn't root the phone yet.
I tried to flash back to LT30p_7.0.A.1.303_Generic DE (found it here) but without Debugging = no flash.
Do you have any idea how i can flash or use any other FW without Debugging or Root?
Flashmode and Fastboot mode work in Xperia Flasher!

If you can stand loosing your data you could try a factory reset via recovery.
Info on how to access recovery menu is in the all-in-one thread.
If I helped, hit Thanks!

VaterFrost24 said:
Heyho!
I searched almost the whole day & web to find a solution for my problem, and you are my last instance.
My 1 day old Xperia T got into a Boot-Loop, and only the Sony-Logo shows up after starting the phone.
Previous procedure:
I installed the Sony PC Companion 2.1 and updated to 7.0.A.3.195, after this the phone went into the loop.
Now i can't flash any other software because USB-Debugging is off, and i didn't root the phone yet.
I tried to flash back to LT30p_7.0.A.1.303_Generic DE (found it here) but without Debugging = no flash.
Do you have any idea how i can flash or use any other FW without Debugging or Root?
Flashmode and Fastboot mode work in Xperia Flasher!
Click to expand...
Click to collapse
If you tried this via the official PCCompanion you could always take it back to the shop.
But i do suggest the following
1) Uninstalling pccomapnion
2) Redownload and install PCCompanion
3) Repair phone via PCComapnion. (You do not need USB debbuging for this)

emuX said:
If you can stand loosing your data you could try a factory reset via recovery.
Info on how to access recovery menu is in the all-in-one thread.
If I helped, hit Thanks!
Click to expand...
Click to collapse
I can't even enter Recovery because it immediately restarts after the Sony Logo!
gregbradley said:
If you tried this via the official PCCOmpanion you could always take it back to the shop.
But i do suggest the following
1) Uninstalling pccomapnion
2) Redownload and install PCCompanion
3) Repair phone via PCComapnion. (You do not need USB debbuging for this)
Click to expand...
Click to collapse
The PCCompanion doesn't even recognize the phone because it always restarts. There are only 2 modes: loop or off.
I will return this brick to the shop, thank you for the proposals!

VaterFrost24 said:
I can't even enter Recovery because it immediately restarts after the Sony Logo!
Click to expand...
Click to collapse
You cant enter recovery if you have not unlocked the bootloader, rooted and installed Recovery
The PCCompanion doesn't even recognize the phone because it always restarts. There are only 2 modes: loop or off.
I will return this brick to the shop, thank you for the proposals!
Click to expand...
Click to collapse
Your phone needs to be turned off for PCCompanion to flash it....Just go through the steps to update software and choose repair

gregbradley said:
Your phone needs to be turned off for PCCompanion to flash it....Just go through the steps to update software and choose repair
Click to expand...
Click to collapse
I know what you mean, but when i plug in the USB-cable, the phone automatically turns on.
The menu is like this: SEARCH -> CONNECT (i plug in the cable) -> RECOGNITION -> at this point the phone is on for a few seconds
but it turns off and aborts the update!
This error appears: "PC Companion could not connect to the phone... please read the document troubleshooting".
But no point in this document helps me. There are only proposals like:
-use another USB port
- turn the phone off and on again
- Use another USB-cable
Seems like Sony bricked it with it's own software

Take it back to the shop then
Sent from the future on my Star Trek communicator.
Sent from my LT30p using XDA premium.

Did you try :
while device is power ON
Volume Up + POWER (for 10 seconds) -> resets the battery, its like removing the battery and putting it back in [device will vibrate once]
Volume Up + POWER (for additional 5 seconds, total 15 seconds) -> will power off hard, device will power down [device will vibrate thrice]
Click to expand...
Click to collapse
Maybe nothing will happend but it cost nothing to try...

babylonbwoy said:
Maybe nothing will happend but it cost nothing to try...
Click to expand...
Click to collapse
Thanks for the description! While trying things out i noticed the vibration signal but didnt know what it means.
Nothing happened

VaterFrost24 said:
I can't even enter Recovery because it immediately restarts after the Sony Logo!
Click to expand...
Click to collapse
You don't have to. You have to put the device in fastboot or flashmode which you reach by holding either vol-up or vol-down BEFORE respectively WHILE hooking the phone up to your pc.
But as greg said, undplug and completely power off your device and put it aside. Then start PC Companion and chose repair. PC Companion will then guide you through the steps necessary to get your phone to a state where it can be reflashed.
because it always restarts. There are only 2 modes: loop or off.
Click to expand...
Click to collapse
Not true, it does not restart by itself in either flashmode nor fastboot mode
As pointed out above, theres fastboot mode and flashmode which bypass the failing OS bootup
I will return this brick to the shop, thank you for the proposals!
Click to expand...
Click to collapse
You obviously have no clue what a brick is. You have a bootlooping device which is nowhere near a brick. But that's probably a detail you're not interested in.
Try to follow the steps above to repair (=basically a full on, clean reflash in Sony vocabulary) your phone and get rid of the bootloop.

Hi guys.
first ever post in here!(because nearly all of the time i've found an answer here!! cheers!)
i've had exactly the same problem and been looking all over for a solution as i also have the boot loop problem occurring. tried the repair options in pc companion and also SUS. if i'm right the battery has to be above 50% to update and i'm pretty sure it's drained. i remember when flashing my htc one x when that was stuck in bootloop with low battery that to get enough battery I made a battery loop batch file which charged the device. however this was in fastboot mode and i don't think i have that option on my Xperia T. is there any way to charge the battery so as to attempt another repair?
Thanks in advance!

mani234 said:
Hi guys.
first ever post in here!(because nearly all of the time i've found an answer here!! cheers!)
i've had exactly the same problem and been looking all over for a solution as i also have the boot loop problem occurring. tried the repair options in pc companion and also SUS. if i'm right the battery has to be above 50% to update and i'm pretty sure it's drained. i remember when flashing my htc one x when that was stuck in bootloop with low battery that to get enough battery I made a battery loop batch file which charged the device. however this was in fastboot mode and i don't think i have that option on my Xperia T. is there any way to charge the battery so as to attempt another repair?
Thanks in advance!
Click to expand...
Click to collapse
Just leave it plugged in. But i have used pccompanion when the battery has been as low as 10%.
I think you could try a hard reset. (Volume up and power button for 5-8 seconds, and then keep it pressed for a further20 seconds, untill it vibrates several times) Then try flashing a stock .303 file from the all in one thread via flashtool

gregbradley said:
Just leave it plugged in. But i have used pccompanion when the battery has been as low as 10%.
I think you could try a hard reset. (Volume up and power button for 5-8 seconds, and then keep it pressed for a further20 seconds, untill it vibrates several times) Then try flashing a stock .303 file from the all in one thread via flashtool
Click to expand...
Click to collapse
leaving it plugged in just continues bootloop. sorry should have mentioned i've tried hard reset. i did try flashtool (0.9.9.0 version?) but it was not picking up the device.
cheers

mani234 said:
leaving it plugged in just continues bootloop. sorry should have mentioned i've tried hard reset. i did try flashtool (0.9.9.0 version?) but it was not picking up the device.
cheers
Click to expand...
Click to collapse
leave the device turned off....then attach usb with volume down button...send a screen shot of what flashtool says when you do that.

gregbradley said:
leave the device turned off....then attach usb with volume down button...send a screen shot of what flashtool says when you do that.
Click to expand...
Click to collapse
got this when i connected with vol- held down
regards

mani234 said:
got this when i connected with vol- held down
regards
Click to expand...
Click to collapse
why are you flashing an x10 relock bootloader ftf?
Choose an xperia T stock generic ftf from the all in one thread and place that in the firmware folder of flashtools and choose that when you hit the flash button

gregbradley said:
why are you flashing an x10 relock bootloader ftf?
Choose an xperia T stock generic ftf from the all in one thread and place that in the firmware folder of flashtools and choose that when you hit the flash button
Click to expand...
Click to collapse
yes, realised this after i sent you the screenshot my bad. thought the flashtool would've already had ftf's pre-loaded so to speak. will give this a bash once it finishes downloading!
regards

mani234 said:
yes, realised this after i sent you the screenshot my bad. thought the flashtool would've already had ftf's pre-loaded so to speak. will give this a bash once it finishes downloading!
regards
Click to expand...
Click to collapse
tried the flashtool with the relevant ftf file but after an initial connection phase it kept bootlooping back out of 'connected mode'. however i left i (trial and error) and it did start to flash the ftf but initially it stopped around 40% then re-bootlooped. i messed around with vol- connection to usb and power plus vol+ shutdown method (which incidentally did not vibrate) serval times left it plugged in and each time it started but stopped flashing around 92-94% complete. having got frustrated i just thought what the hell and left it to attempt to charge overnight (i say attempt as this method never seemed to charge the device once i had this problem). Anyways i must've done something right (or not!:silly as i tried it again but today there must've been some charge applied as it flashed on the second attempt i tried (the first resulted in another aborted flash) it flashed my T no problem!:good:
thank you guys!:laugh:

Glad it worked out for you.

But you activated USB-Debugging before your phone started looping right?
Sent from my LT30p using xda app-developers app

[Q] T-Mobile Z1S brick

I rooted my z1s today, then i installed recovery then flashed the rom for our phone made by tactic, all was well but everytime i booted the phone it always said android is upgrading, then it went through all the apps, so i thought why don't i just wipe system cache data and dalvik, then install the rom again, big mistake at first it booted to the sony logo got stuck, i kept turning it off then on 3 times, then after that i just went into flash mode with the led turning blue, after that i turned it off to save battery because i didn't download the ftf and flashtool yet, so after all that is downloaded i try to go into that mode again by plugging it into my computer then volume up and power but then it shows a red led for a brief second then stays black screen, not on ithink. When plugged into my computer it shows usb device not recognized so the phone is still alive. so my question is, what can i do to save my phone? pleeease help :crying: and yes i kind of literally cried

LaosPerson said:
I rooted my z1s today, then i installed recovery then flashed the rom for our phone made by tactic, all was well but everytime i booted the phone it always said android is upgrading, then it went through all the apps, so i thought why don't i just wipe system cache data and dalvik, then install the rom again, big mistake at first it booted to the sony logo got stuck, i kept turning it off then on 3 times, then after that i just went into flash mode with the led turning blue, after that i turned it off to save battery because i didn't download the ftf and flashtool yet, so after all that is downloaded i try to go into that mode again by plugging it into my computer then volume up and power but then it shows a red led for a brief second then stays black screen, not on ithink. When plugged into my computer it shows usb device not recognized so the phone is still alive. so my question is, what can i do to save my phone? pleeease help :crying: and yes i kind of literally cried
Click to expand...
Click to collapse
You wiped the system and then wonder why there is no system?
Just repair your phone using pccompanion to get back to stock
Or
Flash a Z1S FTF using flashtool.
Then, spend some reading the threads and learning what to do before blindly flashing and wiping stuff.

gregbradley said:
You wiped the system and then wonder why there is no system?
Just repair your phone using pccompanion to get back to stock
Or
Flash a Z1S FTF using flashtool.
Then, spend some reading the threads and learning what to do before blindly flashing and wiping stuff.
Click to expand...
Click to collapse
I can't get pc companion or flash tool to read my phone, when it's connected to my computer it says usb device not recognized, but my phone still is alive but no display either

LaosPerson said:
I can't get pc companion or flash tool to read my phone, when it's connected to my computer it says usb device not recognized, but my phone still is alive but no display either
Click to expand...
Click to collapse
Have you tried using them yet?
In your last post you say you have not even downloaded flashtool yet?
Download it, run driver.exe from the driver folder in the installation path. Choose flashmode, fastboot and Z1 drivers
then run flashtool and attach the phone with it turned on.
Detach the phone
Attach the phone again in flashmode.
Please post the log from flashtool here

gregbradley said:
Have you tried using them yet?
In your last post you say you have not even downloaded flashtool yet?
Download it, run driver.exe from the driver folder in the installation path. Choose flashmode, fastboot and Z1 drivers
then run flashtool and attach the phone with it turned on.
Detach the phone
Attach the phone again in flashmode.
Please post the log from flashtool here
Click to expand...
Click to collapse
My phone doesn't even shutoff, no vibrations etc, just the computer saying device not recognized, and the phone was unplugged while trying to turn it off
flash tool also says device disconnected? and i can't upload the log file

Press and hold the power and volume up until it vibrates 3 times. Then it is off.
Just copy and paste the window from flashtool here.

LaosPerson said:
My phone doesn't even shutoff, no vibrations etc, just the computer saying device not recognized, and the phone was unplugged while trying to turn it off
flash tool also says device disconnected? and i can't upload the log file
Click to expand...
Click to collapse
i changed it to zip file but the log is inside

gregbradley said:
Press and hold the power and volume up until it vibrates 3 times. Then it is off.
Just copy and paste the window from flashtool here.
Click to expand...
Click to collapse
i tried that, doesn't work

Try it again, that should ALWAYS work, no matter what.
How long are you holding them both for?
Press and hold both of them at the same time

gregbradley said:
Try it again, that should ALWAYS work, no matter what.
How long are you holding them both for?
Press and hold both of them at the same time
Click to expand...
Click to collapse
i pressed it for at least 5 seconds, and both

Press it for much longer. If you get to one minutes and it has not worked then we can worry
Also, after seeing your numerous posts all over the forum I see another issue
LaosPerson said:
...so i shut it off then went into flash mode with the blue led then i turned it off from there then when...:
Click to expand...
Click to collapse
Blue LED means fastboot, for flashmode you need a green LED
Press volume down for flashmode and volume up for fastboot.

gregbradley said:
Press it for much longer. If you get to one minutes and it has not worked then we can worry
Also, after seeing your numerous posts all over the forum I see another issue
Blue LED means fastboot, for flashmode you need a green LED
Press volume down for flashmode and volume up for fastboot.
Click to expand...
Click to collapse
these don't work anymore for some reason, and again windows reognizes the device but doesn't know what it is
time to wrry, it doesn't work the vol up and power after a minute
HELP DEVICE OCNNECTED IN FLASH MODE WHAT DO I EXCLUDE IN THE FLASH ?
NVM I JUST LET it wiothout excluding anything wishh me luck

gregbradley said:
Press it for much longer. If you get to one minutes and it has not worked then we can worry
Also, after seeing your numerous posts all over the forum I see another issue
Blue LED means fastboot, for flashmode you need a green LED
Press volume down for flashmode and volume up for fastboot.
Click to expand...
Click to collapse
there's around 2000 files it's sending to my phone, is it normal

OMG YESSS MY PHONE STARTED :victory::victory::victory::victory:

Love you greg, thanks for always coming on xda arouund this time

No worries, My boss is not yet in at work

gregbradley said:
No worries, My boss is not yet in at work
Click to expand...
Click to collapse
HEHEHEH what helped me was telling me to hold the vol up and power for a minutes, i went further to like almost two minutes and after that i started stabbing the red button next to the sim card with a toothpick LOL

My phone is bricked. Can anyone help?

Flashtool does not recognize my device
I can't access Fastboot or Flashmode.
When I press the power button nothing happens.
When I plug the phone into my computer or a wall outlet and hold the UP volume button the LED flashes red then turns blue. It stays blue.
When I plug the phone into my computer or a wall outlet and hold the DOWN volume button the LED flashes red then green then the LED turns off.
Any help is greatly appreciated.

drdoomed said:
Flashtool does not recognize my device
I can't access Fastboot or Flashmode.
When I press the power button nothing happens.
When I plug the phone into my computer or a wall outlet and hold the UP volume button the LED flashes red then turns blue. It stays blue.
When I plug the phone into my computer or a wall outlet and hold the DOWN volume button the LED flashes red then green then the LED turns off.
Any help is greatly appreciated.
Click to expand...
Click to collapse
It doesnt matter that flashtool doesnt recognize your phone
1- Download the firmware you want
2-Open flashtool
3-Press the flash icon
4-Select flashmode mode
5-Wait until it says to plug in your phone
6-Hold volume down and connect your phone
7-Wait until the proccess ends
8-Done

ExCuTioN said:
It doesnt matter that flashtool doesnt recognize your phone
1- Download the firmware you want
2-Open flashtool
3-Press the flash icon
4-Select flashmode mode
5-Wait until it says to plug in your phone
6-Hold volume down and connect your phone
7-Wait until the proccess ends
8-Done
Click to expand...
Click to collapse
When I get to step 6 nothing happens. it's like I can't get into Flashmode. It just repeats connect your device. No matter how many times I do it or how long I hold the button. It's not recognizing the device. PC companion doesnt recognize it either.

drdoomed said:
When I get to step 6 nothing happens. it's like I can't get into Flashmode. It just repeats connect your device. No matter how many times I do it or how long I hold the button. It's not recognizing the device. PC companion doesnt recognize it either.
Click to expand...
Click to collapse
you dont see the led flash red/green?
Did anything happend to the phone?Did it fell or did it get wet?

ExCuTioN said:
It doesnt matter that flashtool doesnt recognize your phone
1- Download the firmware you want
2-Open flashtool
3-Press the flash icon
4-Select flashmode mode
5-Wait until it says to plug in your phone
6-Hold volume down and connect your phone
7-Wait until the proccess ends
8-Done
Click to expand...
Click to collapse
ExCuTioN said:
you dont see the led flash red/green?
Did anything happend to the phone?Did it fell or did it get wet?
Click to expand...
Click to collapse
Yes. I broke the charger connector thing in the phone. I had it repaired and it was working. I honestly think the place that repaired it messed with the phone to get more money out of me.
They fixed it and when I took it, once it ran out of battery it started to do the same thing again. I cant figure out what it is.

drdoomed said:
Yes. I broke the charger connector thing in the phone. I had it repaired and it was working. I honestly think the place that repaired it messed with the phone to get more money out of me.
They fixed it and when I took it, once it ran out of battery it started to do the same thing again. I cant figure out what it is.
Click to expand...
Click to collapse
it seems that they didnt fix your phone at all. I suggest you go to a more reliable store or even if there is one near you to a sony repair store

drdoomed said:
Flashtool does not recognize my device
I can't access Fastboot or Flashmode.
...
When I plug the phone into my computer or a wall outlet and hold the UP volume button the LED flashes red then turns blue. It stays blue.
Click to expand...
Click to collapse
VOL UP (Blue LED) is fastboot. This is working . Thats a good thing.
1. Turn the Handy off
2. Press and hold VOL+UP
3. Connect the cable
4. Wait till the LED is blue and take your fingers from the phone
The display will indicates nothing in this mode.. It's normal.
Now you can Download TWRP Recovery for C6603.
Have you got an open bootloader.
which rom you wanted to install? stock? custom?
1. Download the boot-twrp-v2.img from (please take the right version for your phone):
http://forum.xda-developers.com/xpe...t/recovery-stable-twrp-2-4-3-0-touch-t2182112​2. Make your PC available for adb+fastboot:
http://www.android.gs/install-android-sdk-adb-windows/
&
http://www.chip.de/downloads/Minimal-ADB-and-Fastboot_62500183.html​3. Go in folder with "fastboot.exe"
4. Press "Shift+Mouse-Right-Click"
5. "open command windows here"
6. C:\Flashtool\adb>fastboot.exe flash boot boot-twrp-v2.img
Go in Recovery and wipe/factory reset (or flash a new rom, ...)
Should work. Good Luck.
you could try to recover your os via Sony PC Companion
www.chip.de/downloads/Sony-PC-Companion_47336379.html

Xperience Z said:
VOL UP (Blue LED) is fastboot. This is working . Thats a good thing.
1. Turn the Handy off
2. Press and hold VOL+UP
3. Connect the cable
4. Wait till the LED is blue and take your fingers from the phone
The display will indicates nothing in this mode.. It's normal.
Now you can Download TWRP Recovery for C6603.
Have you got an open bootloader.
which rom you wanted to install? stock? custom?
1. Download the boot-twrp-v2.img from (please take the right version for your phone):
http://forum.xda-developers.com/xpe...t/recovery-stable-twrp-2-4-3-0-touch-t2182112​2. Make your PC available for adb+fastboot:
http://www.android.gs/install-android-sdk-adb-windows/
&
http://www.chip.de/downloads/Minimal-ADB-and-Fastboot_62500183.html​3. Go in folder with "fastboot.exe"
4. Press "Shift+Mouse-Right-Click"
5. "open command windows here"
6. C:\Flashtool\adb>fastboot.exe flash boot boot-twrp-v2.img
Go in Recovery and wipe/factory reset (or flash a new rom, ...)
Should work. Good Luck.
you could try to recover your os via Sony PC Companion
www.chip.de/downloads/Sony-PC-Companion_47336379.html
Click to expand...
Click to collapse
your solution is not going to help because its a hardware problem and pc companion wont help since the phone wont even boot up

in a similar (or worse) problem :
was just using the phone when it hangs .. Instead being smart and patient, I tried to hard-reset it .. the screen goes dark, my android wear disconnect .. but then I literally got nothing ..
tried to put it to the cradle, connect the USB to computer, no lights, nothing
fastboot mode : volume up + connect USB, no lights, nothing
hold power button : no lights, nothing ..
the phone feels cold, so the procs seems to be sleeping ...
any ideas ?

ari197 said:
in a similar (or worse) problem :
was just using the phone when it hangs .. Instead being smart and patient, I tried to hard-reset it .. the screen goes dark, my android wear disconnect .. but then I literally got nothing ..
tried to put it to the cradle, connect the USB to computer, no lights, nothing
fastboot mode : volume up + connect USB, no lights, nothing
hold power button : no lights, nothing ..
the phone feels cold, so the procs seems to be sleeping ...
any ideas ?
Click to expand...
Click to collapse
believe me hard reset didnt do that. Either your battery died and now you need a new battery or you phone died and now you need a new phone

[Q] Bricked? Phone won't turn on. Blinking red on charge; solid red on power button

hey everyone,
I recently got a warranty replacement of my xperia z3 compact. It came with the latest 5.1.1. I downgraded to .77 (kitkat) through flashtool, rooted, installed the latest dual recovery. In TWRP, I restored one of my old TWRP backups, which was a .28 (lollipop 5.0 I believe). When I press reboot after restoring, the phone won't turn on anymore. No LED or anything. When I plug it into the charger, the LED blinks red. When I hold down the power button while charging, the LED light became solid red.
Flashtool doesn't recognize the phone. What else can I do? Did I corrupt the bootloader? Any advice is appreciated. Thank you.

happened to me, just flash any stock firmware with flashtool (it doesnt need to be recognised) and do not plug in until it tells you to.
then follow the instructions and wipe everything
hope it helps

xpzx said:
happened to me, just flash any stock firmware with flashtool (it doesnt need to be recognised) and do not plug in until it tells you to.
then follow the instructions and wipe everything
hope it helps
Click to expand...
Click to collapse
I tried flashing with flashtool, but when I plug the phone in when asked to, flashtool does not recognize the phone being plugged in.
Do you know why this happened? Did I do anything (downgrade firmware, flash wrong firmware) that caused this to happen?

I cant tell what did it, because flashing any rom will brick mine to this state, and what do you mean by not recognised? Does it say preparing files for flashing? does it give the 'press volume down and power button' pop up?

xpzx said:
I cant tell what did it, because flashing any rom will brick mine to this state, and what do you mean by not recognised? Does it say preparing files for flashing? does it give the 'press volume down and power button' pop up?
Click to expand...
Click to collapse
yes, after it's done preparing files for flashing, a popup appears which tells me to plug in the phone while holding the volume down button. When I plug in the phone, nothing happens. The flashing process doesn't start

c19932 said:
yes, after it's done preparing files for flashing, a popup appears which tells me to plug in the phone while holding the volume down button. When I plug in the phone, nothing happens. The flashing process doesn't start
Click to expand...
Click to collapse
Do you be sure to hold the power and volume down button before and during the time you plug it in, until the pop up disappears?

Had something similar, but flashtool magically fixed it
http://forum.xda-developers.com/z3/...elp-thread-t3164306/post69146576#post69146576

I know it's a late reply, but my Z3c is rooted and running marshmellow. My phone would do the same thing, I thought it was bricked. After monkeying and monkeying it finally came back. The problem was I let the battery drain all the way to 0, and even while plugged in for a bit it didn't do anything. I think it liked it when I would plug it into my laptop instead of the power outlet. From then on, I haven't had the problem because I try to avoid the battery going completely dead.
Although the last time I did by accident, it did come back after plugging it in. My suggestion? Try plugging and charging it in your laptop and then turn on.

c19932 said:
hey everyone,
I recently got a warranty replacement of my xperia z3 compact. It came with the latest 5.1.1. I downgraded to .77 (kitkat) through flashtool, rooted, installed the latest dual recovery. In TWRP, I restored one of my old TWRP backups, which was a .28 (lollipop 5.0 I believe). When I press reboot after restoring, the phone won't turn on anymore. No LED or anything. When I plug it into the charger, the LED blinks red. When I hold down the power button while charging, the LED light became solid red.
Flashtool doesn't recognize the phone. What else can I do? Did I corrupt the bootloader? Any advice is appreciated. Thank you.
Click to expand...
Click to collapse
sorry about my english
is your PC detect your phone in fastmode ?
press and hold volume down and connect to your flashtool in your pc

Hard bricked xperia z1 - please help

Hi Guys,
I really need your help unbrick my Xperia Z1 C902.
Here's what happened:
I tried to flash a custom rom that wasn't compatible VIA AROMA ( I had MiUi 7 custom rom ) and it is now dead. It won't boot. No sign of life. No Vibration when pressed vol up+Power . Hard reset ( via sim slot ) has no affect on the Phone. No recogniztion to USB on laptop ( tried other USB cables as well ).
I have left the phone be charged overnight assuming the flash took a toll on the battery ( it was about 30% when I flashed the phone )and in the morning there was a red LED. Assuming the battery had enougfh power I tried to turn it on, connect to Laptop, Fast boot mode, flash mode but with no luck.
Day2:
Left the phone connected to the stock charger for about 20 hours or so.
No LED lights. No vibrations. No sign of detection on the laptop.
Sony Companion will not detect my phone via fastmode as well.
This phone is out of warranty so I was hoping you can help save some bucks before I take it to the Sony centre.
I looked through XDA all day but nothing has helped me bring my phone back to life.
EDIT:
I have downloaded India Stcok ROM via Xperifirm and tried to flash it but the flashtool does not detect the phone. Fastboot and Flashmode both does not detect the phone. Strange thing is, when I plug the phone to laptop holding the Vol down button, a red LED blinks for few seconds but the fastboot does not work ( as my phone has bootloader unlocked )
ADB does not work - No devices connected.
If there is anyway I can flash or install TWRP recovery ( or any for that matter ), I have the old working MiUI rom in the external SD card.
I will owe you a beer or two and a dinner if you 're able to bring my phone back to life. Please I am desperate.

Sudhir Kota said:
Hi Guys,
I really need your help unbrick my Xperia Z1 C902.
Here's what happened:
I tried to flash a custom rom that wasn't compatible VIA AROMA ( I had MiUi 7 custom rom ) and it is now dead. It won't boot. No sign of life. No Vibration when pressed vol up+Power . Hard reset ( via sim slot ) has no affect on the Phone. No recogniztion to USB on laptop ( tried other USB cables as well ).
I have left the phone be charged overnight assuming the flash took a toll on the battery ( it was about 30% when I flashed the phone )and in the morning there was a red LED. Assuming the battery had enougfh power I tried to turn it on, connect to Laptop, Fast boot mode, flash mode but with no luck.
Day2:
Left the phone connected to the stock charger for about 20 hours or so.
No LED lights. No vibrations. No sign of detection on the laptop.
Sony Companion will not detect my phone via fastmode as well.
This phone is out of warranty so I was hoping you can help save some bucks before I take it to the Sony centre.
I looked through XDA all day but nothing has helped me bring my phone back to life.
EDIT:
I have downloaded India Stcok ROM via Xperifirm and tried to flash it but the flashtool does not detect the phone. Fastboot and Flashmode both does not detect the phone. Strange thing is, when I plug the phone to laptop holding the Vol down button, a red LED blinks for few seconds but the fastboot does not work ( as my phone has bootloader unlocked )
ADB does not work - No devices connected.
If there is anyway I can flash or install TWRP recovery ( or any for that matter ), I have the old working MiUI rom in the external SD card.
I will owe you a beer or two and a dinner if you 're able to bring my phone back to life. Please I am desperate.
Click to expand...
Click to collapse
Hi.
You have flashing led that means there is some hope first press and hold hard reset button for 15-20 seconds under sim cover then realizes it. Now plug in charger and dont touch the phone before 4-5 hours. Let it charge even though red led comes on.
After that disconnect your phone and don't turn it on wait for 5 minutes.
Also do check if the flash tool drivers are properly installed (window 8 and newer needs you to disable driver signature enforcement) use flashtool version 0.9.19.0, dont know why but this version works best for me.
Flash *.108 firmware (available in xda) also do always check hash after downloading.
Now try to flash the firmware as normally we do and hope for the best. This method worked fine for me many times.
Good luck..! [emoji111]

The flashing Red LED is bringing back some really bad memories of my own Hard brick. Try what kathanpatel suggests first - holding the reset button down.
Are your symptoms identical to this?:
http://forum.xda-developers.com/showthread.php?t=2574764
There is a link to a post with instructions on recovering from the hard brick. Good luck.

Sudhir Kota said:
Hi Guys,
I really need your help unbrick my Xperia Z1 C902.
Click to expand...
Click to collapse
The red button in a sim slot won't have any effect unless your phone is connected to the charger (not computer). Connect the charger, press and hold the red button for about 10 seconds until there is vibration. Then immediately push and hold the power button for a few seconds.