Database Develop

[Q] lost flashmode (only able to run fastboot mode)

It seems my LT30p lost flashmode.
After upgrading to 7.0.A.3.195 via "Sony PC Companion 2.1" I flashed the older LT30p_4.0.4_Vodafone.ftf with the flashtool to get back root option.
All works fine.
Now I want to flash the "LT30p_7.0.A.3.195_Vodafone_DE.ftf" I created from the "Sony PC Companion" folder with flashtool.
My problem is, the phone only is able to go into fastboot mode (irrelevant pressing volume down or up).
I re-installed the flashtool-drivers without any improvements.
What have I done and how am I able to get back the flashmode mode for my phone?
Thanks in advance.

harowa said:
It seems my LT30p lost flashmode.
After upgrading to 7.0.A.3.195 via "Sony PC Companion 2.1" I flashed the older LT30p_4.0.4_Vodafone.ftf with the flashtool to get back root option.
All works fine.
Now I want to flash the "LT30p_7.0.A.3.195_Vodafone_DE.ftf" I created from the "Sony PC Companion" folder with flashtool.
My problem is, the phone only is able to go into fastboot mode (irrelevant pressing volume down or up).
I re-installed the flashtool-drivers without any improvements.
What have I done and how am I able to get back the flashmode mode for my phone?
Thanks in advance.
Click to expand...
Click to collapse
You seem to be going around the houses. If you flash that you will lose root again. The only way to root on .195 is with an unsecure kernal and unlocked bootloader.
Just upgrade again through pccompanion and then unlock bootloader and flash advanced stock kernel v4.

gregbradley said:
You seem to be going around the houses. If you flash that you will lose root again. The only way to root on .195 is with an unsecure kernal and unlocked bootloader.
Just upgrade again through pccompanion and then unlock bootloader and flash advanced stock kernel v4.
Click to expand...
Click to collapse
Thank you. I know that at first I lost root again.
I thought (and that's I understood from that post: http://forum.xda-developers.com/showpost.php?p=33568696&postcount=48) that it will possible to flash the ftf file instead of using the "PC Companion" software. I am not happy to lose my holo hd launcher's settings e.g.
I hoped it will work as you described here:
Part 2. Rooting
If you are on 7.0.A.1.303, follow Bin4ry's method from post 2.
If you are on 7.0.A.3.195, follow the other method in the how to root section from post 2.
Click to expand...
Click to collapse
I wanted to follow this direction:
[Root method] via Flashtool instructions. Credit to Androxyde.
Click to expand...
Click to collapse
But I don't understand why the "flashboot mode" will not reached, my phone only comes into fastboot mode.
Sorry for noob questions, I am native german speaker and school (and english) are many years ago. The Xperia T is my first Sony, I come from Samsung Galaxy phones.

harowa said:
Thank you. I know that at first I lost root again.
I thought (and that's I understood from that post: http://forum.xda-developers.com/showpost.php?p=33568696&postcount=48) that it will possible to flash the ftf file instead of using the "PC Companion" software. I am not happy to lose my holo hd launcher's settings e.g.
But I don't understand why the "flashboot mode" will not reached, my phone only comes into fastboot mode.
.
Click to expand...
Click to collapse
OK, There is no such thing as flashboot mode. Its either flashmode or fastboot.
Try this
download and install latest flashtool.
Goto driver folder and install drivers for fastboot/flashmode/xperia tx
Then open flashtool and drag and drop the .ftf you want to flash into the open window of flashtool. Wait untill flashtool tells you to connect phone.
Turn phone off, count to 10, hold volume down button and connect usb cable

gregbradley said:
OK, There is no such thing as flashboot mode. Its either flashmode or fastboot.
Try this
download and install latest flashtool.
Goto driver folder and install drivers for fastboot/flashmode/xperia tx
Then open flashtool and drag and drop the .ftf you want to flash into the open window of flashtool. Wait untill flashtool tells you to connect phone.
Turn phone off, count to 10, hold volume down button and connect usb cable
Click to expand...
Click to collapse
Sorry ma fault. I mean flashmode and not "flashboot mode". I wrote it from memory.
I allready have installed the drivers (it works for a few days, I wrote in the op), i re-installed them, too bevor I wrote the op.
I turned my phone off und waited until an hour!
02/027/2012 13:27:15 - INFO - Selected LT30p_7.0.A.3.195_2_Vodafone_DE.ftf
02/027/2012 13:27:15 - INFO - Preparing files for flashing
02/027/2012 13:27:20 - INFO - Please connect your device into flashmode.
02/027/2012 13:27:28 - INFO - Device connected in fastboot mode
02/027/2012 13:27:39 - INFO - Flash canceled
02/027/2012 13:27:43 - INFO - Device disconnected
The phone never goes to flashmode since flashing the older ftf, only in fastboot mode, no matter if I hold the bottom down or up button.
That's the problem. I don#t know what happend to the phone, but there is no flashmode any more.
It might be, that there is no flashmode with that ftf?
I got it from your post http://forum.xda-developers.com/showpost.php?p=32978312&postcount=3
[STOCK FIRMWARE] Xperia T [LT30p] 7.0.A.1.303 [Vodafone UK] FTF by gregbradley
Click to expand...
Click to collapse

harowa said:
Sorry ma fault. I mean flashmode and not "flashboot mode". I wrote it from memory.
I allready have installed the drivers (it works for a few days, I wrote in the op), i re-installed them, too bevor I wrote the op.
I turned my phone off und waited until an hour!
02/027/2012 13:27:15 - INFO - Selected LT30p_7.0.A.3.195_2_Vodafone_DE.ftf
02/027/2012 13:27:15 - INFO - Preparing files for flashing
02/027/2012 13:27:20 - INFO - Please connect your device into flashmode.
02/027/2012 13:27:28 - INFO - Device connected in fastboot mode
02/027/2012 13:27:39 - INFO - Flash canceled
02/027/2012 13:27:43 - INFO - Device disconnected
The phone never goes to flashmode since flashing the older ftf, only in fastboot mode, no matter if I hold the bottom down or up button.
That's the problem. I don#t know what happend to the phone, but there is no flashmode any more.
It might be, that there is no flashmode with that ftf?
I got it from your post http://forum.xda-developers.com/showpost.php?p=32978312&postcount=3
Click to expand...
Click to collapse
No, flashmode should always work. Restart phone, restart computer and try again. Make sure you are pressing the very bottom of the volume down button
Try updating via pccompanion.

gregbradley said:
No, flashmode should always work. Restart phone, restart computer and try again. Make sure you are pressing the very bottom of the volume down button
Try updating via pccompanion.
Click to expand...
Click to collapse
I did all of them more than once except using PC Companion. Thank you.
I will not use this tool, because it's not my favor to re-install the halo hd gui and moving other tools via root explorer. I'll wait for OTA, if vodafone germany will rollout 7.0.A.3.195 via ota.
If not, I'll see and look further. But I explain, this has been my first and also my very last Sony Smartphone.
thanks again.
thread may be closed.

harowa said:
I did all of them more than once except using PC Companion. Thank you.
I will not use this tool, because it's not my favor to re-install the halo hd gui and moving other tools via root explorer. I'll wait for OTA, if vodafone germany will rollout 7.0.A.3.195 via ota.
If not, I'll see and look further. But I explain, this has been my first and also my very last Sony Smartphone.
thanks again.
thread may be closed.
Click to expand...
Click to collapse
You give up too easily.
Uninstall flashtool and all sony software from your PC and reinstall.
Also, you can make a backup of your system using recovery and flash your /data back in recovery after you have sorted the problem.
Personally, i will never get another phone other than sony.

gregbradley said:
You give up too easily.
Uninstall flashtool and all sony software from your PC and reinstall.
Also, you can make a backup of your system using recovery and flash your /data back in recovery after you have sorted the problem.
Personally, i will never get another phone other than sony.
Click to expand...
Click to collapse
Thanks again, I am familiar with CWM. I used many different roms with my Galaxy S1 and later with my SIII, too.
With Samsung flashing firmware / custom roms is much easier then with Sony Xperia.
I installed all the needed stuff on an other computer I have in my household and voila it works.
I flashed the rom without wipe data and it works, still without root.
After unlocking boot loader and flashing the V4 comes the shock: all my apps are gone and I have to re-install all my stuff, accounts, gui and so on. I hate that work. Okay, Titanium Backup helps, but it costs many time to get back that system I have had previously.
CWM is a great thing to flashing ROMs and kernels, too. Also great if you want to restore an full image, but to restore (user) data often Titanium Backup is the better choise. But that are only my two cents.

harowa said:
Thanks again, I am familiar with CWM. I used many different roms with my Galaxy S1 and later with my SIII, too.
With Samsung flashing firmware / custom roms is much easier then with Sony Xperia.
I installed all the needed stuff on an other computer I have in my household and voila it works.
I flashed the rom without wipe data and it works, still without root.
After unlocking boot loader and flashing the V4 comes the shock: all my apps are gone and I have to re-install all my stuff, accounts, gui and so on. I hate that work. Okay, Titanium Backup helps, but it costs many time to get back that system I have had previously.
CWM is a great thing to flashing ROMs and kernels, too. Also great if you want to restore an full image, but to restore (user) data often Titanium Backup is the better choise. But that are only my two cents.
Click to expand...
Click to collapse
If you read the whole of the instructions from the SOny site about unlocking the bootloader it clearly states that all data will be lost and that you should make a backup of it.
Certain content on your phone may also be inaccessible due to the removal of DRM security keys and the secure user data partition while unlocking the boot loader. We advise you to create backups, since user data, settings and accounts will be removed.
http://unlockbootloader.sonymobile.com/unlocking-boot-loader
Click to expand...
Click to collapse

[Solved] Help!! Xperia Z bricked after trying to unlock bootloader

[solved] Sorry for my English first, I have been reading thousand thread but with no luck.
My xperia Z is
- locked bootloader
- no root
- didn't install driver properly (I guess)
I was trying to unlock bootloader, but the driver wasn't installed properly somehow as using flashtool even I followed step by step to install. Then, it got stuck for an hour at "Device connected in flash mode". I had to reset the device (power with - volume) with no choice. Now I keep rebooting at the colorful wave after Song logo.
I know flashtool is the only choice for me now, but i can't go in fastboot mode(- volume then plug in usb) because of the bad ADB driver probably. LED is no light (no blue, red, green) at all.
Also, ADB driver that i need to install now, but boot loop on my device is so swift that ADB driver doesn't have enough time to install to my device.
I am stuck at this stage for a few days. Any idea what I should do now???
PS: using latest flashtool

chungjimmybb said:
Sorry for my English first, I have been reading thousand thread but with no luck.
My xperia Z is
- locked bootloader
- no root
- didn't install driver properly (I guess)
I was trying to unlock bootloader, but the driver wasn't installed properly somehow as using flashtool even I followed step by step to install. Then, it got stuck for an hour at "Device connected in flash mode". I had to reset the device (power with + volume) with no choice. Now I keep rebooting at the colorful wave after Song logo.
I know flashtool is the only choice for me now, but i can't go in fastboot mode(+ volume then plug in usb) because of the bad ADB driver probably. LED is no light (no blue, red, green) at all.
Also, ADB driver that i need to install now, but boot loop on my device is so swift that ADB driver doesn't have enough time to install to my device.
I am stuck at this stage for a few days. Any idea what I should do now???
PS: using latest flashtool
Click to expand...
Click to collapse
Since you have a locked BL, Flashtool isn't your only solution...
Install the correct drivers if you haven't already, after that use Sony's updating service to restore your phone.
http://www.sonymobile.com/gb/tools/update-service/

Dsteppa said:
Since you have a locked BL, Flashtool isn't your only solution...
Install the correct drivers if you haven't already, after that use Sony's updating service to restore your phone.
http://www.sonymobile.com/gb/tools/update-service/
Click to expand...
Click to collapse
I just tried sony's updaing service in which fastboot mode was needed.
Since i install the bad ADB driver, how can i install the driver at this stage? should I install from flashtool?
I did uninstalled the driver and install back again from flashtool. Fastboot mode doesn't seem to response at all means. I actually followed the step by step guide from flashtool thread, but i don't think i install the driver properly somehow.

Flash mode is volume down + connect the usb.
Sent from my C6603 using xda premium

gm007 said:
Flash mode is volume down + connect the usb.
Sent from my C6603 using xda premium
Click to expand...
Click to collapse
sorry i wrote it wrong, i did volume - then plug usb

Volume up + power for 15 seconds to shutdown your phone(3 vibrations).
Repair with Sony update service and don't forget volume down.
Or try another pc.
Sent from my C6603 using xda premium

gm007 said:
Volume up + power for 15 seconds to shutdown your phone(3 vibrations).
Repair with Sony update service and don't forget volume down.
Or try another pc.
Sent from my C6603 using xda premium
Click to expand...
Click to collapse
thanks for your reply again. Since i don't have another pc, any other means that I can get to the fastboot mode? (I can't install driver to my device properly because of bootloop perhaps)

chungjimmybb said:
thanks for your reply again. Since i don't have another pc, any other means that I can get to the fastboot mode? (I can't install driver to my device properly because of bootloop perhaps)
Click to expand...
Click to collapse
Uhm, the drivers are installed on your PC, it should work on your phone no matter what.
Of course, you need to have installed the correct drivers and in the correct way. Try to reinstall the drivers (Sony Updating service will give you a link if I'm correct, use that one).
After that use another usb port and try it again.

Dsteppa said:
Uhm, the drivers are installed on your PC, it should work on your phone no matter what.
Of course, you need to have installed the correct drivers and in the correct way. Try to reinstall the drivers (Sony Updating service will give you a link if I'm correct, use that one).
After that use another usb port and try it again.
Click to expand...
Click to collapse
Thanks for your reply.
prove me wrong if i say thing wrong. the ADB driver are installed on PC only and will not install on device? if so, no matter what my device status is, it should be able to connect to fastboot mode as long as it has enough battery?
Also, i just checked Sony Updating service that doesn't provide the driver and function like fasttool. Could you kindly send me the link of this driver so as to not screwing this up again?

You don't need fastboot drivers to use sony update service.
Anyway sus should install the drivers for you when you connect the phone by holding volume down.
You should download sus software not using the web update.
When you connect the phone go to device manager on your pc and check if all the drivers are ok and no yellow signs.
Sent from my C6603 using xda premium

gm007 said:
You don't need fastboot drivers to use sony update service.
Anyway sus should install the drivers for you when you connect the phone by holding volume down.
You should download sus software not using the web update.
When you connect the phone go to device manager on your pc and check if all the drivers are ok and no yellow signs.
Sent from my C6603 using xda premium
Click to expand...
Click to collapse
Thanks for your support. I used SUS to install the rom again, but somehow takes - volume + power instead of - volume +plug in usb in fastboot mode. Now, it is back to factory stock rom.

ive the same problem
chungjimmybb said:
Thanks for your support. I used SUS to install the rom again, but somehow takes - volume + power instead of - volume +plug in usb in fastboot mode. Now, it is back to factory stock rom.
Click to expand...
Click to collapse
ive installed update soft. i turn down the volume button and connect the usb then blue light works. upadte soft got my phone. but when conneting it says i cannot update this softwere cause am cotaining modified firmwere.
Now any one can solve this issue!!???
or any other way to to turn on my phone!!??
---------- Post added at 08:07 PM ---------- Previous post was at 08:05 PM ----------
chungjimmybb said:
thanks for your support. I used sus to install the rom again, but somehow takes - volume + power instead of - volume +plug in usb in fastboot mode. Now, it is back to factory stock rom.
Click to expand...
Click to collapse
bro now can u tell me what was ur final procidure? Please bro

saifkhantt said:
ive installed update soft. i turn down the volume button and connect the usb then blue light works. upadte soft got my phone. but when conneting it says i cannot update this softwere cause am cotaining modified firmwere.
Now any one can solve this issue!!???
or any other way to to turn on my phone!!??
---------- Post added at 08:07 PM ---------- Previous post was at 08:05 PM ----------
bro now can u tell me what was ur final procidure? Please bro
Click to expand...
Click to collapse
did you root or unlock bootloader? if so, SUS is not the procedure that you are looking for.

chungjimmybb said:
did you root or unlock bootloader? if so, SUS is not the procedure that you are looking for.
Click to expand...
Click to collapse
SUS doesn't work on unlocked bootloader.

[Q] Phone keeps waking up while in flashmode

Hello. I'm trying to root my device by downgrading it first. So i need to flash the rom. I had my phone in flashmode. But in a minute or two the phone will wake up. And i can't continue my flashing because of that. Anyone know supposed to be the problem? Sorry im noob at this stuff

Don't connect ur phone in flash mode until flash tool asks for it. The moment flash tool indicates u to connect ur device on, only then connect it in flash mode. Once u load the ftf in flashtool, it takes a min to process the files after which it notifies for u to connect ur phone. Cheers
Sent from my C6603 using XDA Premium 4 mobile app

dj_richard05 said:
Don't connect ur phone in flash mode until flash tool asks for it. The moment flash tool indicates u to connect ur device on, only then connect it in flash mode. Once u load the ftf in flashtool, it takes a min to process the files after which it notifies for u to connect ur phone. Cheers
Sent from my C6603 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Ohhhh. Thanks. But i got this error.. -_-
The error is ERROR - Processing of loader.sin finished with errors.

n0p4rk1ng said:
Ohhhh. Thanks. But i got this error.. -_-
The error is ERROR - Processing of loader.sin finished with errors.
Click to expand...
Click to collapse
Damaged file! Re-download :good:

reptile64 said:
Damaged file! Re-download :good:
Click to expand...
Click to collapse
Yeah i did redownload it. It's still the same. My XZ is 10.4.B.0.101 and i'm trying to downgrade it to 10.3.1.A.2.67. And my device is 4.3. Don't know if it's the firmware that i'm downgrading or what..

Next time please post in the Q/A section which is DIRECTLY BELOW the general section.
Also tagging a post as a question in the general section will bring up a prompt telling you it doesn't belong here if i recall correctly..

n0p4rk1ng said:
Yeah i did redownload it. It's still the same. My XZ is 10.4.B.0.101 and i'm trying to downgrade it to 10.3.1.A.2.67. And my device is 4.3. Don't know if it's the firmware that i'm downgrading or what..
Click to expand...
Click to collapse
Download the ftf from other place. Maybe the site you downloaded from has uploaded a damaged ftf:
And for your first problem try reinstall flashtool and when the device turn on when you in flashmode hold vol+ and power button for 15 seconds
Hope that helped:angel:

[Q] Hard bricked !

guys i was trying to restore the ta backup to relock the bootloader. after it was done it tried to restart the phone and after the shut down the phone was hard bricked !
unfortunately i was about to recover it so I followed this thread : http://forum.xda-developers.com/showthread.php?t=2646405
but i had a problem during the flashing
i get this error after some proceeds :
MINOR ERROR [0x80080021_, err:0017 ]
error while uploading final HDR block
break
finished
anyone knows what to do now?

Guys pleeaaaassseeeee i need a hand over here help me ;( ;(

Do not bump a thread within 24 hours.
Download a stock ftf and flash it using flashtool
Sent from my C6903 using XDA Premium 4 mobile app

gregbradley said:
Do not bump a thread within 24 hours.
Download a stock ftf and flash it using flashtool
Sent from my C6903 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
give me a break! man! thanks for noticing! i know how to flash a ftf file.. the phone is dead totally. no flash mode or fastboot mode

It already happened to me, you just have to flash again your phone with your computer and it work (for me).

megavigore said:
It already happened to me, you just have to flash again your phone with your computer and it work (for me).
Click to expand...
Click to collapse
no way man!its not a soft brick! you cant use flash mode or fastboot mode . just emergency mode ! and thats not working for me neither.
dont know what to do... seems its dead

What is emergency mode?
If there is no response then stick it on charge for 24 hours, do not touch it then try flashing a stock FTF again

Greg is trying to help you mate.
And he's right, there's a time difference and you have to wait for guys to see your thread...
Check do you have latest flashtool
Check do you have correct drivers
Check is your ftf corrupted (download a new one)
, hard restart your device (vol up+power).
Open flashtool and hit start, wait till flashtool prepares fw and ask you to connect device.
Then connect device.
If that won't work, try to download another ftf file...
Maybe you have corrupted ftf and that's causing a problem...
Sent from my D6503 using Tapatalk

funky0308 said:
Greg is trying to help you mate.
And he's right, there's a time difference and you have to wait for guys to see your thread...
Check do you have latest flashtool
Check do you have correct drivers
Check is your ftf corrupted (download a new one)
, hard restart your device (vol up+power).
Open flashtool and hit start, wait till flashtool prepares fw and ask you to connect device.
Then connect device.
If that won't work, try to download another ftf file...
Maybe you have corrupted ftf and that's causing a problem...
Sent from my D6503 using Tapatalk
Click to expand...
Click to collapse
thanks to everyone here who is trying to help me out . but guys, i'm having no flashmode no fast boot mod..i know how to flash a ftf..but this one is different! there is nothing except of a red blinking led.. its hard braked! it will not show anything when i connect to pc. no Power+vol up works. it connect just when you connect the testpiont to GND and some stuff to get connected in emergency mode...
when i connect it normally no log adds in flashtool or any sound on windows..

NiM72NiK said:
thanks to everyone here who is trying to help me out . but guys, i'm having no flashmode no fast boot mod..i know how to flash a ftf..but this one is different! there is nothing except of a red blinking led.. its hard braked! it will not show anything when i connect to pc. no Power+vol up works. it connect just when you connect the testpiont to GND and some stuff to get connected in emergency mode...
when i connect it normally no log adds in flashtool or any sound on windows..
Click to expand...
Click to collapse
Uff...
Are you sure you restored right/yours TS backup?
I have a friend who restored Z1 TA backup to Z2, this things happen so who knows...
It's really odd if you restored your backup on stock fw and something like that happened..
Now I realized you wrote "I had flashtool problems..."
I thought you have problems in flashtool now, that's why I said try with another ftf or another flashtool version...
If you got that, and you did, while you were flashing ftf....I believe you are, unfortunately, right, this is hard brick.
BTW - which firmware you tried to flash?
Sent from my D6503 using Tapatalk

funky0308 said:
Uff...
Are you sure you restored right/yours TS backup?
I have a friend who restored Z1 TA backup to Z2, this things happen so who knows...
It's really odd if you restored your backup on stock fw and something like that happened..
Now I realized you wrote "I had flashtool problems..."
I thought you have problems in flashtool now, that's why I said try with another ftf or another flashtool version...
If you got that, and you did, while you were flashing ftf....I believe you are, unfortunately, right, this is hard brick.
BTW - which firmware you tried to flash?
Sent from my D6503 using Tapatalk
Click to expand...
Click to collapse
i was un iHackers 4.2 using doomkernel v21 tried to relock the bootloader( I have done that before) but this time it tried to restart but this happnd after the restart process..
seems it done, right?

NiM72NiK said:
i was un iHackers 4.2 using doomkernel v21 tried to relock the bootloader( I have done that before) but this time it tried to restart but this happnd after the restart process..
seems it done, right?
Click to expand...
Click to collapse
you need to be on a stock kernel if you relock the bootloader.
You should have flashed a stock FTF immediately after relocking and before restarting.
The solution is to flash a stock FTF
and you have not done this yet
gregbradley said:
What is emergency mode?
If there is no response then stick it on charge for 24 hours, do not touch it then try flashing a stock FTF again
Click to expand...
Click to collapse
please charge it for 24 hours without touching it, then try again

coming back to this thread. Wondered if all was well - ended well or still stuck ?
I tried to install magisk using bridge approach
and ended up with something that will get to just bluelight ( flashboot ?) mode . I am downloading a stock T-Mob FTF. J-FYI this is an operator locked boot loader. I dunno - is it poss to permanently unlock it and install Cust ROM ? I want to :
-- Recover my data from the dead prev . install
--Have a ROM ( stock or custom ) with Magisk installed.
My plan :
-- Flashtool install 4.4 FTF
-- _______________ <----- Need help here. How do I get magisk working ?
Note that AFAIK for locked bootloader , /system is RO

xperia sp stuck in bootloop!

hello guys im new to sony, and got my xperia sp just 1 week ago!
here's what i did.
1. rooted using towelroot
2. installed super su from play store
3. installed twrp with a tool,
4. copied xperianzev3 and gapps to sd card
5. backup
6. did wipes and flashed rom and gapps via twrp
everything went fine and the rom was good,
i was stupid enough to boot into recovery and restore the backup i made( boot.img also)
still the phone was working but gapps were crashing repeatedly!
so i booted into recovery but there was no recovery! i installed the recovery again with the tool
now the phone is stuck in bootloop, is constantly rebooting ( first sony logo, then xpria then the color splash, then reboot!)
please help me with details! i know nothing about flashtool , fastboot!
my phone is c5306 factory unlocked, locked bootloader!

Download the stock .FTF file for your Xperia SP model. Download Flashtool by androxyde and also install Xperia drivers for your Windows pc which come along with the Flashtool.
Place your downloaded stock .FTF file inside (C:/Flashtool/Firmwares) here C is normal drive where Flashtool installs you can respective drive with which you want. Then make sure your phone is switched off.
Open Flashtool and thn hit smart lighting button on top left and from there select flashmode and click OK.
There you will see your downloaded ftf if you placed it under firmware folder.
Now just select it and click flash and wait for the Flashtool to load files. Once it's done then you will see a menu popping up saying to connect your device. With device switched off press and hold power button and Volume down button to connect it into flashmode and that's it wait for the flashtoool to do the job. Once it is complete then disconnect your device and start it and wait until it loads.
Hope I helped. Hit thanks if I did
Sent from my C5302 using XDA mobile app

Take a look at my guide to recover your ass from that sick-ass bootloop!
http://forum.xda-developers.com/xperia-sp/general/root-ultimate-noobs-guide-to-rooting-t2845520

Tech N You said:
Download the stock .FTF file for your Xperia SP model. Download Flashtool by androxyde and also install Xperia drivers for your Windows pc which come along with the Flashtool.
Place your downloaded stock .FTF file inside (C:/Flashtool/Firmwares) here C is normal drive where Flashtool installs you can respective drive with which you want. Then make sure your phone is switched off.
Open Flashtool and thn hit smart lighting button on top left and from there select flashmode and click OK.
There you will see your downloaded ftf if you placed it under firmware folder.
Now just select it and click flash and wait for the Flashtool to load files. Once it's done then you will see a menu popping up saying to connect your device. With device switched off press and hold power button and Volume down button to connect it into flashmode and that's it wait for the flashtoool to do the job. Once it is complete then disconnect your device and start it and wait until it loads.
Hope I helped. Hit thanks if I did
Sent from my C5302 using XDA mobile app
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Click to collapse
thanks for the help
i followed all your instructions, but it shows, system.sin error, tried a hundred times!!!!

moosa27 said:
thanks for the help
i followed all your instructions, but it shows, system.sin error, tried a hundred times!!!!
Click to expand...
Click to collapse
That seems to be a firmware error. Try redownloading the stock Firmware again or try another version
---------- Post added at 06:22 AM ---------- Previous post was at 06:20 AM ----------
Also what version of windows are you using?

Tech N You said:
Download the stock .FTF file for your Xperia SP model. Download Flashtool by androxyde and also install Xperia drivers for your Windows pc which come along with the Flashtool.
Place your downloaded stock .FTF file inside (C:/Flashtool/Firmwares) here C is normal drive where Flashtool installs you can respective drive with which you want. Then make sure your phone is switched off.
Open Flashtool and thn hit smart lighting button on top left and from there select flashmode and click OK.
There you will see your downloaded ftf if you placed it under firmware folder.
Now just select it and click flash and wait for the Flashtool to load files. Once it's done then you will see a menu popping up saying to connect your device. With device switched off press and hold power button and Volume down button to connect it into flashmode and that's it wait for the flashtoool to do the job. Once it is complete then disconnect your device and start it and wait until it loads.
Hope I helped. Hit thanks if I did
Sent from my C5302 using XDA mobile app
Click to expand...
Click to collapse
Furrydaus said:
That seems to be a firmware error. Try redownloading the stock Firmware again or try another version
---------- Post added at 06:22 AM ---------- Previous post was at 06:20 AM ----------
Also what version of windows are you using?
Click to expand...
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i tried with two different firmwares!
also i have windows 7

moosa27 said:
i tried with two different firmwares!
also i have windows 7
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Ok then. Are fastboot drivers are installed btw?

Furrydaus said:
Ok then. Are fastboot drivers are installed btw?
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Click to collapse
yes they are

How many times have you flashed a custom rom to you device?

Furrydaus said:
Ok then. Are fastboot drivers are installed btw?
Click to expand...
Click to collapse
Furrydaus said:
How many times have you flashed a custom rom to you device?
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Click to collapse
exactly 6 days since i got my phone! this is my first rom, and now i also unlocked my bootloader while in flashmode

moosa27 said:
exactly 6 days since i got my phone! this is my first rom, and now i also unlocked my bootloader while in flashmode
Click to expand...
Click to collapse
Ok so im sorry to say that the Firmware should be the problem. I suggest you download the stock FTF file for Singapore, my country as it seems that your stock FTF file might have been uploaded wrongly. There is also a chance that your phone might have a NAND error which means that your hardware might have a hardware error.

Furrydaus said:
Ok so im sorry to say that the Firmware should be the problem. I suggest you download the stock FTF file for Singapore, my country as it seems that your stock FTF file might have been uploaded wrongly. There is also a chance that your phone might have a NAND error which means that your hardware might have a hardware error.
Click to expand...
Click to collapse
are you sure it will work with my device c5306? if yes do you have link for stock firmwares?

moosa27 said:
are you sure it will work with my device c5306? if yes do you have link for stock firmwares?
Click to expand...
Click to collapse
Check out my guide's section ; Restore Device by Flashtool. It has all of the instructions to getting back your device and links to the list of stock firmwares
---------- Post added at 06:54 AM ---------- Previous post was at 06:50 AM ----------
If youre still receiving errors, you might need to send it for repair. Im not sure whether you'll still have your warranty intact though...

Furrydaus said:
Check out my guide's section ; Restore Device by Flashtool. It has all of the instructions to getting back your device and links to the list of stock firmwares
Click to expand...
Click to collapse
damn! thats where i got the firmwares from! should i redownload and try?

moosa27 said:
damn! thats where i got the firmwares from! should i redownload and try?
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Click to collapse
For the time being you should.. But then again ill find time to search for another link/thread
---------- Post added at 07:01 AM ---------- Previous post was at 06:56 AM ----------
Got another link that you might want to try; http://www.nicois.me/2013/01/XPERIA-OFFICIAL-STOCK-FIRMWARE-DOWNLOAD-FTF-FILES.html

Furrydaus said:
For the time being you should.. But then again ill find time to search for another link/thread
---------- Post added at 07:01 AM ---------- Previous post was at 06:56 AM ----------
Got another link that you might want to try; http://www.nicois.me/2013/01/XPERIA-OFFICIAL-STOCK-FIRMWARE-DOWNLOAD-FTF-FILES.html
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Click to collapse
sorry bro, same error! system.sin

Well then I guess you can either contact a dev here or you can go to your respective sony repair centre to request for a phone repair although i doubt they will repair it for free...
Sorry for the loss

While you are flashing the firmware in the right side you will see exclude box just click on system.sin and try again it'll surely work
Sent from my C5302 using XDA Free mobile app

Tech N You said:
While you are flashing the firmware in the right side you will see exclude box just click on system.sin and try again it'll surely work
Sent from my C5302 using XDA Free mobile app
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Yeah! Thanks bro! Op, follow his step. Totally forgotten about the box for system.sin

No problem u might just have missed the point or else u sure are a dev yourself! OP try this it should wok.
Sent from my C5302 using XDA Free mobile app