[Q] Xperia ION - Hard Bricked - 2 times - Sony Xperia S, Acro S, Ion

Team/Member XDA
Please help me ( putting this line here shows my agony/desperation)
I have ION LT28H (Boot Unlocked/CWM 2.3 Installed) and yesterday I installed XZX Xperience 2 using cwm, it worked fine. later I installed some Fix and booted, it got FREEZE on xperia wallpaper. later by pressing SWITCH ON and VOLUME UP , it nudge 3 times and went in to deep coma (Hard Brick). I put it on wall charger, after 25 hours red LED came on and some time later fone booted and on SONY logo it shook 1 time and rebooted, it kept happening the led went GREEN.
at this point i was so excited and went in to cwm and clear/wipe factory setting and clear the kelvin cache and INSTALLED again XZX Experience _ ION (link given some where in xda), i booted fone .. it again FROZE on SONY logo .... I force restart it by pressing POWER+VOLUMEUP button for 5 seconds it nudge once and restarted and froze... I repeated the process and by opening my FLASHTOOL I call the Original JB ROM 4.1.2 for xperia ion TYT file. THE FONE was connected in FLASHMODE as flashtool was telling me.... then flashtool went in to " Preparing files for flashing Preparing files for flashing" status and immediately after flashtool said that fone is in MTP Mode ... and dialog box started coming saying that connect your fone in flashmode while pressing key......... (THE FONE WAS BLANK, no SONY LOGO and NO LED) `````` I read about the Rubber band trick and while my mobile is connected to PC, I tied the rubber band pressing VOLUME DOWN key to exhaust battery... It was suppose to take 9+ hrs... but after 2 hrs or so, the mobile RED LED started again and then SONY LOGO came and FROZE.... I HAVE PUT IT AGAIN to WALL CHARGER... ( thinking its still recovering from HARDBRICK mode) ....
Now as i was typing this post, SONY logo went of and the fone is showing RED LED and its on WALL CHARGER....
now
1. what will be my NEXT STEP ?
2. if fone was never recovered from HARD BRICK mode then why it started this morning to CWM ?
3. Have i forced it back again to loop whole by stupidly installing xperience_ION again
4. by putting rubber band and exhausting battery and RED LED coming back... has put the ION to HARD BRICK state again?
just love my roooted xperia! plz help me revive it....
~ if i give to to local sony dealers what exactly will they do and approximately how much the repair/reinstallation may cost me (USD $150- $200 ) ? -- but i don't wana do that they will put it back to Gingerbread again as ION never had offical mideast JB released, i flashed EUROPE ROM to ion few months ago...

Possible Flashing mistake
YasuHamed,
there are two modes for Experia ION, one of which is Fastboot.
Next time your experia switches on, try to install using the sony software update service which is quite different from the flashing tool you are using.
Check and let us know what happens. look online for instructions. SONY | make.believe
YasuHamed said:
Team/Member XDA
Please help me ( putting this line here shows my agony/desperation)
I have ION LT28H (Boot Unlocked/CWM 2.3 Installed) and yesterday I installed.....................
....
....
...
at this point i was so excited and went in to cwm and clear/wipe factory setting and clear the kelvin cache and INSTALLED again XZX Experience _ ION (link given some where in xda), i booted fone .. it again FROZE on SONY logo .... I force restart it by pressing POWER+VOLUMEUP button for 5 seconds it nudge once and restarted and froze... I repeated the process and by opening my FLASHTOOL I call the Original JB ROM 4.1.2 for xperia ion TYT file..........
......
......
..................
Click to expand...
Click to collapse

saif_always said:
YasuHamed,
there are two modes for Experia ION, one of which is Fastboot.
Next time your experia switches on, try to install using the sony software update service which is quite different from the flashing tool you are using.
Check and let us know what happens. look online for instructions. SONY | make.believe
Click to expand...
Click to collapse
Your kernel is broken. You need to flash good kernel after (or before) installing XYZ.

Related

[S/SL/AS/Ion]General bricked device thread

So, I've been seeing A LOT of threads regarding bricked devices (be it soft or hard bricks). So, I decided to create this thread, so everyone with bricked devices post here for help, instead of filling our forums and XDA servers with a load of topics with the same stuff.
If someone knows of a general unbricking thread, please PM me or tag me with a link so I can post on this post.
I will PM a mod to pin this thread to top.
To all brickers,
Before posting, try this thread:{RECOVER SOFT-brick}[2012 XPERIA's]Recover ALL 2012 XPERIAs from SOFT-brick
Remember to give the author thanks
Xperia S Return Back To Stock!
Pre-Requisites
For All The New Users..
If You Did Something Wrong
If nothing is working out
Not Able to Fix
Need to Return Back To Original Firmware?
Here is the Guide For You
Click to expand...
Click to collapse
Return Back To Stock
GUIDE for Better Understanding With Pictures And Images For New Users
Explained Step By Step
Click -- [HERE]​
Just a tip: Try downloading Sony Update Service and following the instructions if you get a green LED blink on your phone, which is way simpler to recover without any problems.
Guys My ION LT28h got bricked during a recovery using CWM.
First It was a soft brick, i did something , random pressing of buttons made it worse. its on HARD BRICKED STATE now. Its been more than 5 weeks.
So after some research i found out that my Kernel is ****ed up. My phone is Boot loader Locked, so i cant flash the Kernel separately.
Now few of our fellow xda members told me to unplug the battery cable from the motherboard.
I have successfully disconnected the battery cable from motherboard, i kept it disconnected for one whole night.
Whats the next step ?
Will i be able to flash it with flash tool after connecting the battery to motherboard back ?
Will i be able flash the busted Kernel to a working stock kernel ?
Accidentally messed up and soft bricked Ion- LT28h.
xperia Ion LT28h
ROM: JB 4.1 Pure CyanogenMod Based on CM 10 FXP 218
kernel: GI Kernel v3 or v5
Recovery: TWRP and CWM
Rooted and Unlocked Bootloader
Hi guys, above mentioned were my previous settings. Had occassional reboots and sometimes it was kinda laggy that's why i decided to flash it to another ROM - supposedly to ParanoidAndroid. After following steps to install PA, my phone was on bootloops, was in a hurry then freaked out, i tried soft and hardreset, and tried booting on recovery both on twrp and cwm to flash properly as what was instructed however i may have flashed the wrong zips interchangeably with other roms and kernels resulting to a total messed up ion. i could have restored immediately to a saved CWM or TWRP backup right away however, i only stopped resetting when my phone suddenly stopped responding, no Sony logo, no Xperia logo, no boot, just backlight on, does not turn off, soft and hard reset no nothing. i guess until the battery went dead, then i charged it the whole night.
after reading most threads on recovering softbricked phone, mainly this {RECOVER SOFT-brick}[2012 XPERIA's]Recover ALL 2012 XPERIAs from SOFT-brick thread, and after a couple of days of red led, i constantly charged, i patiently waited(2days) still no green led, however i found out that i can access fastboot. (blue led).. i managed to get to this fastboot mode(blue led) ONLY after i soft reset or power+vol.up/1 vibrate the phone once the backlight lits up- on&off - for about less than a minute then it goes back to red led. (i'll be calling that stage as backlit-on&off-then-back-to-solid-red-led cycle) but then again if i go to fastboot, it will stay in fastboot mode during flashes and it stays there until the battery runs out and goes back to red led. then i charge my phone again, but
during fastboot mode, i have tried flashing the kernel, system and boot image. all via Fastboot command prompt.
and all were successful. there were combinations like, flashing only the kernel, tried flashing kernel and system, tried boot image only, tried all the same time, tried system only, tried different kernels, system and boot img, BUT STILL my phone wont even give me the sony logo screen.
then i thought i may need to wipe cache and userdata so i also erased cache and userdate a couple of times via fastboot mode command prompt. and yes fastboot does detects my phone. it can reboot to bootloader or just the normal fastboot reboot. so i have no issues regarding phone and pc via using fastboot command prompt. and Same thing - all flashes were successful,
i have flashed i think more or less than a total of 50 times, flashing different combinations. Still it goes back to brick mode.. backlit-on&off-then-back-to-solid-red-led cycle.
i'd like to add that i have also tried flashing via fastboot mode using Flashtool. (thunder icon+selecting 'fastboot mode'). i have flashed the kernel and system, tried kernel only, tried both same time, tried system with boot.img tried flashing kernel with boot.img too, tried different combinations. again, all were successful, but still same result.
it only goes back to backlit-on&off-then-back-to-solid-red-led cycle.
a couple of days after it went to green. flashmode finally! thinking everything will now be alright, i decided to flash it using flashtool via flashmode. I connected phone to pc, after the solid red led and after backlit-on&off-then-back-to-solid-red-led cycle. and the it goes back to red led then the backlit on&off cycle, after observing my phone for hours i then knew that after, i guess about a hundred cycle of backlit on&offs it really does go to green led by itself and if i'm connected to the pc and flashtool it stays on green led or flashmode, however if im connected only on a wallcharger it goes to green led but will only stay there for like 1-2 seconds then goes back to red led and then the backlit on&off cycle.
then i thought just maybe my battery really needs to die as mentioned, since upon plugging my phone on to a wall charger it goes immediately to red led and there's really no response on the phone except only if you gonna wait for the backlit on&off cycle the n press power + vol up then it will respond and go to fastboot mode or power+vol down which goes to flashmode. then i decided to reset the battery by carefully unplugging the ribbon cable and i did. well, initially it did (led was off for a moment then changed to blinking red then solid red) but i have to go to work that time and had to continue only after coming home from work, and that did not resolved it.
i may have flashed my ion a hundred times or so to this date, still no luck. i have finally decided to re-locked my bootloader- and yes it is successfully locked now. - thinking PCC/SEUS/SUS would get it back to life but i'm wrong - it just cant detect my phone. PC companion detects it as Phone/Tablet only then after selecting Ion on the phone list it always says my device is upto date and no available software. (sad)
I also noticed that flashtool does not detect my phone as LT28h. It only says that it is connected to flashmode. Is that an issue too. I have tried diff versions of flashtool from 9.6 to 9.11 all same. i have also installed fastboot and adb as well as flashtool drivers, it sayas all were successfully installed however if im connected via flashtool flashmode, none seems to be detected on device manager, tried reinstalling and manually installing the sony sa0103 adb interface driver however after installing i get an error unable to start device. even if my phone is connected still the device on devicemanager still has an excalamation point. i'm using windows 8. i have flashed successfully before when my phone was in good state, however now that im on brick mode it seems that all flashes i've done did not push thru. also those times that i have flashed my ion via flashtool it says something like:
phone should be connected with usb debugging on and enabled install on unknown sources. i have tried flashing it using win7 pc phone was not detected still, however flashtool stated and detected my device was connected on usb debugging mode, but have has errors during flashing though.
since my bootloader is now locked im unable to flash now via fastboot. before bootloader status says- rooted now bootloader status is- ROOTABLE.
i previously owned xperia neo and have managed to flash it successfully without any issues, also this is the 3rd time i had bricked my ion and managed to fix it before..
i also want to ask regarding flashing back to stock - does that mean any stock firmware can be selected? can be .233 / .68 /.20 or the latest ICS 6.1.E.3.7? coz i have basically tried to all of those mentioned. also is the reason that my flashes were not successful is it because i was currently on 4.1 JB ROM and im flashing 4.0 ICS stock? I also have TWRP and CWM backups on my PC and on internal SD card, is there a way for me to flash or restore those backups via flashtool?
I'm running out of options, i'm desperate and on the verge of giving up.
i dont want to believe that i have totally messed up and hard bricked my phone. I do believe that there is a solution to this, and my phone can be recovered without sending it over to repairshop.. Today is the 3rd week and still struggling to get my phone back to life (even just the sony logo) . any suggestions before i unlock again my bootloader? please help. Any help will be gladly appreciated, and many thanks to everyone for spending time on reading my messed up and soft/hardbrick ion experience.
If you brick your device while flashing kernel and device do not respond any way then follow this little difficult but 100% sure method.
- Dissemble your phone.
- Disconnect battery ribbon from motherboard.
- Reconnect battery ribbon.
- Fastly connect USB cable while holding vol +/-
- Flash Kernel or FTF FW.
Just looking for some direction on my Xperia Ion that recently got bricked while attempting to update to JB software.
Currently, it has no response except for plugging into charger giving a solid red light. I am unable to get it into flashmode and have already disassembled and disconnected/reconnected the battery to reset it.
Im gonna guess that the kernel is royally efed up at this point, Im unable to get it into a bootloop either.
What is the next step to solve this issue? Any help is greatly appreciated!
Droiiiiiiiiid said:
Just looking for some direction on my Xperia Ion that recently got bricked while attempting to update to JB software.
Currently, it has no response except for plugging into charger giving a solid red light. I am unable to get it into flashmode and have already disassembled and disconnected/reconnected the battery to reset it.
Im gonna guess that the kernel is royally efed up at this point, Im unable to get it into a bootloop either.
What is the next step to solve this issue? Any help is greatly appreciated!
Click to expand...
Click to collapse
Did you try SUS ? Official update service ?
Droiiiiiiiiid said:
Just looking for some direction on my Xperia Ion that recently got bricked while attempting to update to JB software.
Currently, it has no response except for plugging into charger giving a solid red light. I am unable to get it into flashmode and have already disassembled and disconnected/reconnected the battery to reset it.
Im gonna guess that the kernel is royally efed up at this point, Im unable to get it into a bootloop either.
What is the next step to solve this issue? Any help is greatly appreciated!
Click to expand...
Click to collapse
I think that you should charge it more to be able to go into flashmode. Maybe until the red light will go off or it'll turn into green. Then try to go into flashmode. Good luck
MozzieZ said:
Did you try SUS ? Official update service ?
Click to expand...
Click to collapse
I was going to but that requires my device be in Flashmode.
Droiiiiiiiiid said:
I was going to but that requires my device be in Flashmode.
Click to expand...
Click to collapse
Read this, maybe it will help you.
http://forum.xda-developers.com/showthread.php?t=2344896
This is my first time got hard brick on my phone. I'm flash wrong ROM (it made for S but I flash it on SL) now my phone totally dead. When I put on wall charger it show constant red led and off several minutes later, try disassemble phone and disconnect and connect ribbon doesn't help to get flashmode and fastboot mode. Any help would be very appreciated.
EDIT: After disconnect ribbon battery I got notification on flashtool "device connected with usb debugging off" but led remains on constant red. Should I try rubber band tricks?
ahlulnugraha said:
This is my first time got hard brick on my phone. I'm flash wrong ROM (it made for S but I flash it on SL) now my phone totally dead. When I put on wall charger it show constant red led and off several minutes later, try disassemble phone and disconnect and connect ribbon doesn't help to get flashmode and fastboot mode. Any help would be very appreciated.
EDIT: After disconnect ribbon battery I got notification on flashtool "device connected with usb debugging off" but led remains on constant red. Should I try rubber band tricks?
Click to expand...
Click to collapse
After disconnecting and connecting back the battery cable , you wont get access to flashboot/flashmode instantly. disconnecting the cable will reset the phone.
If you are getting red led means , its charging on low power. You should keep on wall charging for some hours , say 12 + hours.
After that try flashing the kernel alone , first . you will have to hold the flash mode button for sometime. say 5-10 minutes. then if u have enough charge in your phone it will flash the kernel alone. if u are successful in flashing the kernel, then charge again for some hours , 2-4 hours then try to flash the entire ROM.
Read the Thread Recovering Bricked Phones. This will help. I recovered my phone following the method shown in that thread.
Be patient bro, you can recover your phone, just that it will take some time
Captain Droid said:
After disconnecting and connecting back the battery cable , you wont get access to flashboot/flashmode instantly. disconnecting the cable will reset the phone.
If you are getting red led means , its charging on low power. You should keep on wall charging for some hours , say 12 + hours.
After that try flashing the kernel alone , first . you will have to hold the flash mode button for sometime. say 5-10 minutes. then if u have enough charge in your phone it will flash the kernel alone. if u are successful in flashing the kernel, then charge again for some hours , 2-4 hours then try to flash the entire ROM.
Read the Thread Recovering Bricked Phones. This will help. I recovered my phone following the method shown in that thread.
Be patient bro, you can recover your phone, just that it will take some time
Click to expand...
Click to collapse
Thanks for your fast reply, but I'm already put on wall charger 1 day, and the red led got turn off (no led at all). I think I'll try rubber band trick tonight and leave it till morning.
Hey guys I'm having a problem with my Acro S... It's bootloader is unlocked.
It was soft bricked due to a command I ran on Terminal Emulator (dd if=/dev/zero of=/dev/block/mmcblk0). After inputting that command I safely turned off the phone (Long press Power button, Choose Power off). After turning off, phone was completely dead, no response. It was on 80% battery for sure. It happened last week Saturday (July 20). I then charged my phone for 2days+. On the first day (July 21), no red LED appeared, on the 2nd day (July 22), constant red LED appeared, 3rd day (July 23), red LED disappeared. I then prepared my flashtool for flashing the JB firmware .211 KERNEL ONLY. So I plugged in my phone with volume down pressed, I pressed it for 15mins! My finger was f*cked, after 15mins... nothing happened, RED LED just disappeared and I just heard the Windows USB sound. Flash process didn't start, phone didn't give me a GREEN LED. I tried it again and again and miserably same thing happens, can't go to flash mode. Tried the same with volume up button for fastboot mode but still nothing happens, the RED LED just disappears!
Should I just leave my phone charging on the wall socket even if the RED LED disappeared? To get green LED?
SOMEBODY PLEASE HELP ME! I NEED MY PHONE SO BAD! :crying:
i was installing the prerooted/deodexed stock lt28h rom through cwm in the middle of instalation my phone rebooted and came into a sony bootloop i forced it shutdown by pressing power and volume up now its not starting not even charginig what to do please help :crying::crying:
Flash Tool
Be calm and sit back now put your phone to charger for whole night and then next day download flashtool and a firmware for you device and fladh it your device will breath again.......
tejasvi1 said:
i was installing the prerooted/deodexed stock lt28h rom through cwm in the middle of instalation my phone rebooted and came into a sony bootloop i forced it shutdown by pressing power and volume up now its not starting not even charginig what to do please help :crying::crying:
Click to expand...
Click to collapse
we have desame problem my phone is not charging no ligths/led and cant power on after pressing power and up because im stuck in boothllop after afgrading via OTA.
theprint said:
we have desame problem my phone is not charging no ligths/led and cant power on after pressing power and up because im stuck in boothllop after afgrading via OTA.
Click to expand...
Click to collapse
thks for sharing but i have alraedy solved my hard brick problem my phone is back and running normally

[FIXED] Bricked Xperia SL Help

First of all, I'm a noob at this. So don't expect me to know everything.
I got a rooted Xperia SL with ICS.
(Please read all before replying)
This is what happened. I was trying to update my phone to 6.2.B.0.200 JellyBean with Sony PC Companion. But it didn't work as both Flash Boot and Fast Boot doesn't work properly in my phone (told u im a noob). When I hold the volume down button while the phone is off, and then connect the USB cable, the green LED will light up for about 3 seconds and then it goes off, and the phone shows the charging battery icon.
So I downloaded the firmware from a thread here in xda forum, and tried to flash it with CWM. But then, the flash failed and the phone is now stuck on a boot loop with the "SONY" logo displaying forever.
So I again tried to flash it with flashtool, but the same problem came with Flashboot and Fastboot. It just goes into flashboot for few seconds, flashtool recognizes the phone. And then it disconnects and I see a notification in windows saying USB Device Unrecognized.
Please help me out to solve this problem, this phone is all I got
P.S. - I already had enough battery (around 60%) when I tried to get into flashboot.
______________
Fixed it. Not so sure, but I think what made it work was running flashtool as administrator...
Use SUS
iLashGLX said:
First of all, I'm a noob at this. So don't expect me to know everything.
I got a rooted Xperia SL with ICS.
(Please read all before replying)
This is what happened. I was trying to update my phone to 6.2.B.0.200 JellyBean with Sony PC Companion. But it didn't work as both Flash Boot and Fast Boot doesn't work properly in my phone (told u im a noob). When I hold the volume down button while the phone is off, and then connect the USB cable, the green LED will light up for about 3 seconds and then it goes off, and the phone shows the charging battery icon.
So I downloaded the firmware from a thread here in xda forum, and tried to flash it with CWM. But then, the flash failed and the phone is now stuck on a boot loop with the "SONY" logo displaying forever.
So I again tried to flash it with flashtool, but the same problem came with Flashboot and Fastboot. It just goes into flashboot for few seconds, flashtool recognizes the phone. And then it disconnects and I see a notification in windows saying USB Device Unrecognized.
Please help me out to solve this problem, this phone is all I got
P.S. - I already had enough battery (around 60%) when I tried to get into flashboot.
______________
Fixed it. Not so sure, but I think what made it work was running flashtool as administrator...
Click to expand...
Click to collapse
I also had got the same problem while updating to ics .55 firmware. I suggest you to use Sony Update Service instead of PC Companion.
First of all charge your phone upto one and half hour then follow the SUS instructions carefully while updating, It may help you !
All the best !

[Q] Sony Xperia Ion LT28h Rebooting issue.

Hello there,
I have been using my xperia ion since around 6 months with stock rom and never tried to tinker with anything, lately suddenly my phone stopped working i.e it started a reboot loop. the phone turns on to the sony logo then gets to the 'rethink possible' screen and then a blue/black glaze appears and the phone restarts which happen again and again, as this phone is off warranty, i tried to flash it some other (4.1.2) stock rom but still no luck, when i connect my phone to the pc using the usb cable while holding the volume down button, the green led does shows up but the flash software says (error flashing - aborted). I have attached a picture of the same.
Please see into it and help me get through it.
I will be much thankful fellas.
ashu_852258 said:
Hello there,
I have been using my xperia ion since around 6 months with stock rom and never tried to tinker with anything, lately suddenly my phone stopped working i.e it started a reboot loop. the phone turns on to the sony logo then gets to the 'rethink possible' screen and then a blue/black glaze appears and the phone restarts which happen again and again, as this phone is off warranty, i tried to flash it some other (4.1.2) stock rom but still no luck, when i connect my phone to the pc using the usb cable while holding the volume down button, the green led does shows up but the flash software says (error flashing - aborted). I have attached a picture of the same.
Please see into it and help me get through it.
I will be much thankful fellas.
Click to expand...
Click to collapse
i think you need to enable usb debugging

after switching off, it turned to automatically shut down at sony logo

Hi guys,
I am in trouble.
My only phone is C6502 and I flashed it with 5.1.1 taiwan rooted rom yesterday.
My procedure was:
1, use flashtool to make it as rom 4.4.2 230 and rooted
2, use cwm to flash it with 5.1.1 rooted taiwan rom
at the beginning, everything went well. however, after updated several apps in google store, it automatically shut down for several time. I opened sim card back and used a stick to power off. after restarting, it stuck at the SONY logo and automatically and repeatedly restart. I have to power off with a stick for the second time. Since this second, trouble came. No matter what I did, it just automatically shut down at the SONY logo. I tried to flash it back to several roms and nothing changed. (no green light while flashing). Still stuck and shut down at the sony logo (different roms ha
ve different styles of logo, so it shut down at different sony logos). Charging doesn't work. it showed the red led first following with a green blink, and then no more light. The flashtool cannot recognize it as ADB mode but as flashmode.
Could you please help me. I hope you guys could let me know what was going on and how can I unbrick it.
Thank you for your time in advance. Wish you the best.
ekk84 said:
Hi guys,
I am in trouble.
My only phone is C6502 and I flashed it with 5.1.1 taiwan rooted rom yesterday.
My procedure was:
1, use flashtool to make it as rom 4.4.2 230 and rooted
2, use cwm to flash it with 5.1.1 rooted taiwan rom
at the beginning, everything went well. however, after updated several apps in google store, it automatically shut down for several time. I opened sim card back and used a stick to power off. after restarting, it stuck at the SONY logo and automatically and repeatedly restart. I have to power off with a stick for the second time. Since this second, trouble came. No matter what I did, it just automatically shut down at the SONY logo. I tried to flash it back to several roms and nothing changed. (no green light while flashing). Still stuck and shut down at the sony logo (different roms ha
ve different styles of logo, so it shut down at different sony logos). Charging doesn't work. it showed the red led first following with a green blink, and then no more light. The flashtool cannot recognize it as ADB mode but as flashmode.
Could you please help me. I hope you guys could let me know what was going on and how can I unbrick it.
Thank you for your time in advance. Wish you the best.
Click to expand...
Click to collapse
did it work? anything happened? what did you do? how did you do? im facing a similiar situation.
ekk84 said:
Charging doesn't work. it showed the red led first following with a green blink, and then no more light. The flashtool cannot recognize it as ADB mode but as flashmode.
Could you please help me. I hope you guys could let me know what was going on and how can I unbrick it.
Click to expand...
Click to collapse
It's common ZL behaviour on broken battery controller (attached to battery). Reflashing will not help (it's hardware bug) but changing the battery (and it's faulty controller) definitely bring your Xperia back to life. I did it twice on mine (1st time it was not charging at all, stuck on Sony logo on boot, 2nd time it worked only with power cord connected).
After changing battery, just reflash it via official Sony PC Companion (if your bootloader still locked), then do whatever you want )
p.s. If you don't want wait / can't find new battery, you also can try short-pin method with current one. Idea is to bypass it's controller, so it will charge / work again. Search XDA to find out which pins need to be connected.

Z1C won't power on / boot

My Z1C (D5503) was running fine on Jelly Bean. Got an official notification from Sony that Lollipop upgrade was available, and recommended. I put it off for quite a while, but finally accepted the upgrade (thinking it would make the phone even better). Immediately had battery drain issues! Phone was basically unusable as a mobile, as it wouldn't last more than a few minutes off charge. It is out of warranty, so Sony wanted to charge me big $ just to look at it. Tried going back to Jelly Bean myself, by re-flashing, but it failed on System.sin After that, phone would not boot - shows the Sony logo, then Xperian logo, then the blue wave screen, then repeats same sequence over & over. Tried flashing multiple times, including with a Lollipop ftf, but same result. Tried old flashtool 0.9.18.6 as well, but same result. I can flash the kernal alone okay - makes no difference to the phone though - still won't boot. Xperia Flashtool (Emma) says phone is locked, and refers me to Sony to update or unlock. Tried official Sony Xperia Companion software repair, but it fails with error code: UEGetPhoneInfoMissingInfo message. So, at the moment the phone will not power on and boot - it will do the vibrate 3 times when I press volume up and power together. It will enter flashmode (green led) okay, and flashboot mode (blue led) okay. Power on button alone has no effect. If I leave the phone on charge it goes to a green led, and the display shows a black & white message saying software update has failed, and I should connect to a PC and try again. I have not tried to unlock the bootloader yet (no experience with it), and all the info on the Sony support page suggests it shouldn't be necessary anyway, plus I wouldn't be able to get official Sony updates anymore if I did. Not sure what to do now? Any suggestions on the best course of action from here?
ZED1COMPACT said:
My Z1C (D5503) was running fine on Jelly Bean. Got an official notification from Sony that Lollipop upgrade was available, and recommended. I put it off for quite a while, but finally accepted the upgrade (thinking it would make the phone even better). Immediately had battery drain issues! Phone was basically unusable as a mobile, as it wouldn't last more than a few minutes off charge. It is out of warranty, so Sony wanted to charge me big $ just to look at it. Tried going back to Jelly Bean myself, by re-flashing, but it failed on System.sin After that, phone would not boot - shows the Sony logo, then Xperian logo, then the blue wave screen, then repeats same sequence over & over. Tried flashing multiple times, including with a Lollipop ftf, but same result. Tried old flashtool 0.9.18.6 as well, but same result. I can flash the kernal alone okay - makes no difference to the phone though - still won't boot. Xperia Flashtool (Emma) says phone is locked, and refers me to Sony to update or unlock. Tried official Sony Xperia Companion software repair, but it fails with error code: UEGetPhoneInfoMissingInfo message. So, at the moment the phone will not power on and boot - it will do the vibrate 3 times when I press volume up and power together. It will enter flashmode (green led) okay, and flashboot mode (blue led) okay. Power on button alone has no effect. If I leave the phone on charge it goes to a green led, and the display shows a black & white message saying software update has failed, and I should connect to a PC and try again. I have not tried to unlock the bootloader yet (no experience with it), and all the info on the Sony support page suggests it shouldn't be necessary anyway, plus I wouldn't be able to get official Sony updates anymore if I did. Not sure what to do now? Any suggestions on the best course of action from here?
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