Database Users

Xperia X10i Flash Mode

Hi guys,,, just bought myself a X10i to play with,,, figured I,ve flash the thing with a rom from the developers forum,
This is where I came unstuck,,,, cant for the life of me get it into flash mode.
Instructions were as follows
1 With fone OFF. Hold down back button and insert usb cable, green light comes on and hit enter. What bloody enter, on the fone or on your keyboard. I,ve tried both, fone just keeps on booting into the main screen, nothing even resembles a flash mode screen. Tried this untill my thumb nearly bled.
Someone help please.

Read the tuts in the dev forum. P.S. no custom roms yet but there is root.

TrevvyD said:
Hi guys,,, just bought myself a X10i to play with,,, figured I,ve flash the thing with a rom from the developers forum,
This is where I came unstuck,,,, cant for the life of me get it into flash mode.
Instructions were as follows
1 With fone OFF. Hold down back button and insert usb cable, green light comes on and hit enter. What bloody enter, on the fone or on your keyboard. I,ve tried both, fone just keeps on booting into the main screen, nothing even resembles a flash mode screen. Tried this untill my thumb nearly bled.
Someone help please.
Click to expand...
Click to collapse
Try hold down "back button" without battery then insert USB cable and then insert battery.

When it says to hit enter, that is to continue from the screen (on the PC) that says "press any key to continue" when you are doing the steps for rooting. If you don't have that window ready the phone will only stay in flash mode for about 5 seconds and then it will continue to boot. So, just make sure you are ready with the PC before entering flash mode.

Dr_Wolodya said:
Try hold down "back button" without battery then insert USB cable and then insert battery.
Click to expand...
Click to collapse
thanks!!
this really helps!

My phone is also x10i.I have trouble to enter in flash mode.It shows up the green LED but flash tool says it occurs error and plug your phone in flash mode.
What should I do?Help me , plz.

johnmin said:
My phone is also x10i.I have trouble to enter in flash mode.It shows up the green LED but flash tool says it occurs error and plug your phone in flash mode.
What should I do?Help me , plz.
Click to expand...
Click to collapse
check drivers (install SE PC suite and let it atleast detect the phone once in FLASH mode)...
also it might help to disable any antivirus (worked for me)

cannot enter the flash mode
Hi,
I know this post is pretty old, but still I'm struglig the second day now to get into flash mode and still no luck despite trying every method there is on the web.
I've got Xperia X10i mini pro, reinstalled standard ROM with PC companion just to make sure it's nothing with the software or any modifications I made to it.
I'm guiding myself with instruction given here:
wiki.cyanogenmod.com/wiki/Sony_Ericsson_Xperia_Mini_Pro:_Full_Update_Guide
in order to get my bootloader unlocked
what I've done so far:
-installed Android SDK incl. SDK Tools, SDK Platform-tools, Google USB driver package. Not installed any API from SDK.
-put android_winusb.inf (18 KB size) in C:\android-sdk-windows\extras\google\usb_driver
-in general- everyting given here: wiki.cyanogenmod.com/wiki/Howto:_Install_the_Android_SDK#Windows
command
Code:
adb devices
rerurns
Code:
List of devices attached
43423531315537465737 device
in my opinion meaning it works as it should.
So I turn the phone off, unplug the cable both from computer and the phone, take the abttery out, plug both end of USB cable where these should be, hold the Back button (tried with Volume up too) and put the battery in.
The result is it only goes into flash mode for several seconds (confirmed by SuperOneClisk log) and then goes into charging mode. nothing gets displayed on the screen. Only when PC Companion is on it detects it, than looses it and pops up with a window on how to properly connect the device... :/
So can someone please tell me what I do wrong?
Why it doesn't stay in flash mode?
PS. when I enter *#*#7378423#*#* to access the service menu, after pressing the last * the numbers just disappear and nothing happens...
Pls help
Edit:
I somehow got around that with s1tool and Flashtool. But eventually I could not go along the way given at cyanogenmod.com and unlocked with the help of this: http://forum.xda-developers.com/showthread.php?t=1254225

[Q] Flash Tool says: "Searching for Xperia..."

I have Xperia X8 with Eclair update. When I try to flash with X10 Flash Tool it always says Searching for Xperia... Yes I connected the phone in flash mode by holding back button and conecting with usb, I have usb drivers. Non-gui version says the same. I have tried to flash 1.6 firmware from "Going back to 1.6" thread. Please help me, fast!

please post question at general section

Flash Tool help
Try connecting the phone in flash mode, when the flash tool displays "Searching for Xperia ......"

Solved!
Solved! I just installed some drivers from some site. Yes i know i was telling that i have drivers, just i did not know i have incorrect drivers.
Now i am back to Android 1.6!
Can somebody sugest me way to root my Xperia X8?

Now, follow the Step by Step TUT.
Step by Step TUT

Now Rooted 2.1. Thanks for help.

Next time it should help: http://forum.xda-developers.com/showpost.php?p=9510216&postcount=16

How can I install the drivers?
I've downloaded the files with the i386 and amd 64 files but I don't really know what to do with them.
When the device is on the pc is ok with it but when I'm in flash mode the pc just doesn't recognize it and the flash tool says that it's searching for my xperia.
What can I do?
Thanks, Tal.

SaNTi285 said:
How can I install the drivers?
I've downloaded the files with the i386 and amd 64 files but I don't really know what to do with them.
When the device is on the pc is ok with it but when I'm in flash mode the pc just doesn't recognize it and the flash tool says that it's searching for my xperia.
What can I do?
Thanks, Tal.
Click to expand...
Click to collapse
Download automatic install from this link http://www.akshayy.com/sonyericsson/wp-content/uploads/SE_USB_Driver_installer.zip
Press the thanks button!

I've installed the drivers you gave me and it still didn't work even though the computer recognized it now but still in device manager i have it under a yellow triangle sign.
what can I do now? maybe it's my computer that make the problem?
I'm really getting frostrated about it and don't know what to do.

Full instructions.
SaNTi285 said:
I've installed the drivers you gave me and it still didn't work even though the computer recognized it now but still in device manager i have it under a yellow triangle sign.
what can I do now? maybe it's my computer that make the problem?
I'm really getting frostrated about it and don't know what to do.
Click to expand...
Click to collapse
This should really help!
1. On the yellow triangle right click and select "Update Driver..."
2. Download "Non-Gui" version.
3. Put 1.6 firmware on "firmware" folder.
4. Open "X10flash.bat"
5. Write "2" and press enter.
6. Write "y" and press enter.
7. Select operating system, but DONT PRESS ENTER!
8. Now connect USB to computer, but not in phone.
9. Turn off phone.
10. On phone hold back key and connect phone with USB, but dont relase key.
11. On flasher press enter while holding back key.
12. Relase it when it says "Sending Loader..."
This should fix your problem. This is how I done it!

Still not succeeded with flashing.....
velnens123 said:
This should really help!
1. On the yellow triangle right click and select "Update Driver..."
2. Download "Non-Gui" version.
3. Put 1.6 firmware on "firmware" folder.
4. Open "X10flash.bat"
5. Write "2" and press enter.
6. Write "y" and press enter.
7. Select operating system, but DONT PRESS ENTER!
8. Now connect USB to computer, but not in phone.
9. Turn off phone.
10. On phone hold back key and connect phone with USB, but dont relase key.
11. On flasher press enter while holding back key.
12. Relase it when it says "Sending Loader..."
This should fix your problem. This is how I done it!
Click to expand...
Click to collapse
I am still not succeeded with flashing my x8 to android 1.6 (now having 2.1) so i can root 2.1. I am a really noob, so i hope anyone can help me
What did you mean with yelllow triangle, and where can you download non-gui version? When i open the x10flash.bat i cannot write anything (there is nothing happened when i press 2 or Y.
I hope anyone can help me
(Sorry for my bad English)

Explain for Noobs!
thomaszq said:
I am still not succeeded with flashing my x8 to android 1.6 (now having 2.1) so i can root 2.1. I am a really noob, so i hope anyone can help me
What did you mean with yelllow triangle, and where can you download non-gui version? When i open the x10flash.bat i cannot write anything (there is nothing happened when i press 2 or Y.
I hope anyone can help me
(Sorry for my bad English)
Click to expand...
Click to collapse
Yellow trinagle is located in device manager!(just look at other thread)
You can get non-gui version in Bin4ry thread "X10 Flash Tool...and so on"
You need to open x10flash.bat in non-gui folder.(not gui)

velnens123 said:
This should really help!
1. On the yellow triangle right click and select "Update Driver..."
2. Download "Non-Gui" version.
3. Put 1.6 firmware on "firmware" folder.
4. Open "X10flash.bat"
5. Write "2" and press enter.
6. Write "y" and press enter.
7. Select operating system, but DONT PRESS ENTER!
8. Now connect USB to computer, but not in phone.
9. Turn off phone.
10. On phone hold back key and connect phone with USB, but dont relase key.
11. On flasher press enter while holding back key.
12. Relase it when it says "Sending Loader..."
This should fix your problem. This is how I done it!
Click to expand...
Click to collapse
Im still stuck on step 1. The yellow mark still wont disappear no matter what I have tried to reinstall/update the driver.
I have let the wizard to search the internet for correct driver, and I have point it to specific folder with the driver in it, I have tried several versions of the driver that I can find on the net.
I keep getting "the hardware was not installed because the wizard cannot find the necessary software" error.
I can use Flash Tool GUI to root my X8 and to install XRecovery. Those were done successfully. And we are talking same session same day here. Just straight after I rooted the phone and installed Xrecovery, did a backup, then I wanted to flash to 2.1 but then this happened.
Only when the phone is connected to the PC in flash mode.
Can anyone help point me in the right direction?
Forgot to mention: the driver I'm talking about is SEMC signed driver. That is the driver for flashing right? Or have I totally missed this point all together?

I got it working now. It was not SEMC driver that's needed. It should be the gordon's gate driver. For some reason that driver went missing. I have installed SEUS and managed to flash my phone yesterday using SEUS. So definitely it was installed, but disappeared today or sometime after I used SEUS last.

how to fix a bricked phone.

How do i rescue my bricked phone!
Click to expand...
Click to collapse
well the answer lies within this thread.
how do you brick a phone
well, there are many ways you can brick a phone.​1. you install the wrong software
2.you install a 'broken' rom
3. you install a recovery that isnt supported for our phone
4.or you were messing with your bootloader
etc etc... you get the point
how to rescue a bricked x8​1st: If you have done a soft brick then you can boot into xrecovery and restore your latest backup. easy
2:if restoring doesn'twork or you have a hard brick then you should either launch:SEUS (sony ericsson update service) or pc companion. click update and follow the steps.
3:if none of that works then you will have to send it off to se. if you dont get some kind of phone company to fix it then its as useless as a real brick lol or a replica of a phone.
3:you can use a flashtool to fix it as well. if you open flashtool you usally get a number of options such as unlock bootloader etc. there should be an option where you can restore it. (lol i think)
Cheers​i hope it helped. if it did then please do press the thanks button.
-wilbso​

Soft Brick is the common brick we get.
Hard Brick is a brick you can only get with messing with the bootloader. There's no complete brick.
Say something about flashtool too.

Chris95X8 said:
Soft Brick is the common brick we get.
Hard Brick is a brick you can only get with messing with the bootloader. There's no complete brick.
Say something about flashtool too.
Click to expand...
Click to collapse
ok. besides the complete brick is what i call doomsday. thats just my own little thing lol. and yes i will metion 'bout' the flashtool too

how about hard brick??

X8
I bricked my phone while a opened bootloader.Phone was not recognized SIM and i havent data connection too.SE PC repair does not helped me,backup file as well.Only helpful tool was S1Tool with "restore" button.It fixes my phone and i opened bootloader again with success!
Thanks for developers!!!
X8;OPENED BOOTLOADER;nAa kernel;DUAL TOUCH;GINGERXPERIA V17 2.3.7

montekristo said:
I bricked my phone while a opened bootloader.Phone was not recognized SIM and i havent data connection too.SE PC repair does not helped me,backup file as well.Only helpful tool was S1Tool with "restore" button.It fixes my phone and i opened bootloader again with success!
Thanks for developers!!!
X8;OPENED BOOTLOADER;nAa kernel;DUAL TOUCH;GINGERXPERIA V17 2.3.7
Click to expand...
Click to collapse
Quite a few people repaired their phones with s1 tool. Iv never actually hard bricked my phone. IV done soft brick> bootloop but I fixed that be restoring a backed in xrecovery so these replies I
Getting are quite helpful. As long as your phone is repaired everything is alright.
sent from my x8 running gingerdx

Hello, can you please help me! I bricked my xperia neo, while trying to update se tweaked rom v 8.5. Now i'm facing the "sony ericsson" screen, totaly blocked. I've tried many times to flash it, whith wotan client, flash tool, but it's imposible to enter flash mode again, no green led, only bocked se screen, please help!!! how did you manage o get into flash mode?

benga_mircea said:
I bricked my xperia neo, while trying to update se tweaked rom v 8.5. Now i'm facing the "sony ericsson" screen, totaly blocked. I've tried many times to flash it, whith wotan client, flash tool, but it's imposible to enter flash mode again, no green led, only bocked se screen, please help!!! how did you manage o get into flash mode?
Click to expand...
Click to collapse
On the W/X8 and X10 mini/Pro you can get into FLASH MODE by keeping the back button pressed while connecting the TURNED OFF phone by USB.
That being said, you have a NEO which doesn't work that way.
Your phone has "fastboot" - to get there ... turn off the phone, keep the bottom right key pressed and connect the USB cable to the PC.
What you have to do from there on out is either best asked in the RIGHT subforum or through Google research.

B.Jay said:
On the W/X8 and X10 mini/Pro you can get into FLASH MODE by keeping the back button pressed while connecting the TURNED OFF phone by USB.
That being said, you have a NEO which doesn't work that way.
Your phone has "fastboot" - to get there ... turn off the phone, keep the bottom right key pressed and connect the USB cable to the PC.
What you have to do from there on out is either best asked in the RIGHT subforum or through Google research.
Click to expand...
Click to collapse
how did you get this thread back up?
Sent from my X8 using XDA App

wilbso said:
how did you get this thread back up?
Click to expand...
Click to collapse
Hummm...?
I only replied to benga_mircea's post from today.
Or ... did I miss something? *notsure*

Thank you for your help, but I can't acces flash mode or fastboot mode again, lika I use to, after I connect the batery, push the back button, insert the usb, a few seconds and the "sony ericsson" screen pops up again and stays blocked. I think I've killed my phone

Well, for as long as you see the SONY ERICSSON boot logo - and I'm assuming from the way the X8 works here - the boot loader and kernel are intact; there's just a problem boot-strapping the system ROM (shot system, bad flash).
The real problem is that Fastboot isn't comparable to the Flash Mode of our phones ... it's very different.
In your stead I would try to find out how you can perform a "disaster restore" (like we do with our W/X8 through Flash Mode and Flashtool) by flashing back to stock.
Anyway ... just to repeat it ...
1. You need to TURN OFF your phone and DISCONNECT it from the computer/charger.
2. You insert the USB connector into JUST your phone.
3. You press the bottom/right button (also "Back"?) and keep it pressed while you connect the USB to the computer.
Once the phone connected to the computer as a (wild guess!) "Flash Device" or "Fastboot Device" you need the apropriate tool(s) and Stock ROM image - in case PC Companion refuses to repair your phone.
---------- Post added at 12:21 PM ---------- Previous post was at 12:18 PM ----------
Any chance this thread (in the Xperia Neo General section) could be of any help to you?

B.Jay said:
Hummm...?
I only replied to benga_mircea's post from today.
Or ... did I miss something? *notsure*
Click to expand...
Click to collapse
Where did you find it? I mean where did boy find the thread? My Sig? Looking through old posts?
Sent from my X8 using XDA App

B.Jay said:
Well, for as long as you see the SONY ERICSSON boot logo - and I'm assuming from the way the X8 works here - the boot loader and kernel are intact; there's just a problem boot-strapping the system ROM (shot system, bad flash).
The real problem is that Fastboot isn't comparable to the Flash Mode of our phones ... it's very different.
In your stead I would try to find out how you can perform a "disaster restore" (like we do with our W/X8 through Flash Mode and Flashtool) by flashing back to stock.
Anyway ... just to repeat it ...
1. You need to TURN OFF your phone and DISCONNECT it from the computer/charger.
2. You insert the USB connector into JUST your phone.
3. You press the bottom/right button (also "Back"?) and keep it pressed while you connect the USB to the computer.
Once the phone connected to the computer as a (wild guess!) "Flash Device" or "Fastboot Device" you need the apropriate tool(s) and Stock ROM image - in case PC Companion refuses to repair your phone.
---------- Post added at 12:21 PM ---------- Previous post was at 12:18 PM ----------
Any chance this thread (in the Xperia Neo General section) could be of any help to you?
Click to expand...
Click to collapse
Thanks! I tried like 50 times, and nothing, the ennoing "sony ericsson" is booting (no sony ericsson logo as usualy, just the writing) I flashed 10 times in the past whith no problem. Now, even when I put it to charge ( wall charge) the phone is turning on showing that stupid "sony ericsson" writting, I cant shut it down from the on\off button. Before killling it, I've instales stock MT15i_4.0.A.2.368_GLOBAL ROM, then I upgraded to MT15i_4.0.2.A.0.42_Global, then rooted with DooMLoRD_v4_ROOT-zergRush-busybox-su, Installed CWM( wiped cache, updated SE tweaked v8.5 Rom) After the restart, the "se" writting started booting. I've pulled out the batery, and begined flashing it with flash tool(no green led).The flashing started and my little brother accidentaly pulled out the Usb cable; that's the whole story! I've tried like 100 times with wotan, flash tool and FlashTool_0.2.9.1_FOTAUnbrick, no result, even if pc companion tells me "phone conected" and gives me further instructions whith the phone being dead, and the flash tool showing me to connect de device... Thank you for all the help, hope there is a solution. sorry for the long post and my bad english...
---------- Post added at 11:43 PM ---------- Previous post was at 11:24 PM ----------
04/040/2012 23:40:02 - INFO - For 2011 devices line, be sure you are not in MTP mode
04/040/2012 23:40:04 - INFO - Device disconnected
04/040/2012 23:40:06 - INFO - Device connected with USB debugging off
04/040/2012 23:40:06 - INFO - For 2011 devices line, be sure you are not in MTP mode
04/040/2012 23:40:07 - INFO - Device disconnected
04/040/2012 23:40:10 - INFO - Device connected with USB debugging off
04/040/2012 23:40:10 - INFO - For 2011 devices line, be sure you are not in MTP mode
04/040/2012 23:40:18 - INFO - Device disconnected
04/040/2012 23:40:35 - INFO - Device connected with USB debugging off
04/040/2012 23:40:35 - INFO - For 2011 devices line, be sure you are not in MTP mode
Flash tooll results when trying to connect (pulling batery-10 secs, back butoon, usb cable)

benga_mircea said:
The flashing started and my little brother accidentaly pulled out the Usb cable; that's the whole story!
Click to expand...
Click to collapse
Whoa... that's what I call a "security vulnerability".
If the flash process got interrupted because your lil bro pulled the USB cable I'm somewhat certain the NAND is messed up pretty good - no wonder you're stuck at the SE boot logo.
If there's no way by which you can get the device back to normal (read: even the guys over in the Neo sub-board are out of ideas/help) I think your best shot would be to send it in to SE for repair if you still got warranty. SE should have other means to resurrect the device and slap it back into shape.
I'm sorry I can't really help you here with this - the Neo is different from the X8 and also different from the way my tablets work.

Thank's for the advice! My waranty is lost, i've unlocked the bootloader. Only if I could enter in flash mode!

benga_mircea said:
Thank's for the advice! My waranty is lost, i've unlocked the bootloader. Only if I could enter in flash mode!
Click to expand...
Click to collapse
Well, on my Samsung, which has Fastboot, I first enter Fastboot and from there I put the device into download mode for flashing (in theory you can compare "Download mode" to the "Flash mode" - in Flash mode the W/X8 awaits a ROM image to be flashed into the NAND, pretty much the same as "Download mode" works).
Since your Neo isn't completely dead (you just have a shot system due to the flash interruption) you only need to find a way how you can re-write the system.
I lack the time to research how the Neo works, but I think there should be a way to get the device going as you can even "resurrect" a W/X8 where you formatted the system partition (by mistake in CWM, for example). However, that's not as bad as interrupting the USB connection but about the same "ooops" to blank the system.

Flash mode not working, fastboot not workingI Tried a lot of programs (wotan, flash tool, fota unbrick tool, octopus, omnius for se, pc companion, se update. Non of them manages to connect to my phone. If only I could connect for 1 sec. I have a backup of TA, but I can flash it. Thanks anyway!

is it safe to unlock BL, if we have x8 with manuf.code 11W28? pls help me

NarutoDroid said:
is it safe to unlock BL, if we have x8 with manuf.code 11W28? pls help me
Click to expand...
Click to collapse
yes 11W30 or below should unlock fine but for me 11W33 also no problem
Sent from my E15i using xda premium

[Tutorial] Xperia SP Bootloader Unlocking/Relocking

Quick tutorial for unlocking & relocking the bootloader of the Xperia SP
this is the official way to unlock bootloader
if you want to keep ur DRM keys, first root device and then check this out
Warning!
This procedure will wipe the /data partition of your phone, so you will loose all ur stored data, settings. INTERNAL SDCARD will BE WIPED!!!
For Xperia™ devices released 2013 or later (for example Xperia™ Z and Xperia™ ZL), the SD card of your device will be formatted and you will lose all content (for example photos, music, videos) when you unlock the boot loader.
Click to expand...
Click to collapse
DRM keys WILL be lost forever
schaggo said:
I'd add what losing DRM keys means, e.g. no more Music ID/Gracenote within the Walkman app plus probably most importantly, as asked all the time and all over the place in the T/mint forums: loss of Bravia Engine.
Click to expand...
Click to collapse
older Xperia devices sometimes got issues after unlock of bootloader (BRICK after FOTA update) - you have been warned
why to unlock bootloader?
u can flash custom ROMs/Kernels
u dont need to worry if the new firmware can be rooted or not as with unlocked bootloader u can always ROOT ur device
Sony gives sneak-peaks/preview builds of latest OS which requires unlocked bootloaders, as they did with Xperia 2011/2012 line, so who knows may be Sony may give early builds of next android OS
Most of this is taken from lollylost100's his tutorial from ARC thread (all credits for that concise tutorial go to him, i have elaborated on a few things and added device specific changes)
[ before we begin unlocking bootloader ]
get the IMEI code for ur device: type *#06# in phone dialer to find it out, note only the digits (no dashes)
download the fastboot package
IMPORTANT: if you are using Windows 8 you will need to enable few things to allow driver installation
download the latest FlashTool Xperia Driver Pack and install fastboot drivers (common) & adb drivers for this device from the list!
make sure u have a windows PC with USB cable to connect the phone
power down ur phone and keeping the Volume Up button pressed connect the USB cable to PC this will trigger FASTBOOT mode and windows will start driver installation, which should be automatically done
once drivers are installed just disconnect cable and power on device
[ how to unlock ] (official way)
Go to: http://unlockbootloader.sonymobile.com/ and read everything!
At the bottom click 'Start Unlocking the Bootloader'
First, you should confirm that it is possible to unlock the boot loader of your phone by checking the service menu. In your phone, open the dialler and enter *#*#7378423#*#* to access the service menu.
In your phone, tap Service info > Configuration > Rooting Status. If Bootloader unlock allowed says Yes, then you can continue with the next step. If it says No, or if the status is missing, your device cannot be unlocked.
Click to expand...
Click to collapse
after u have verified that u can unlock bootloader, scroll to the bottom of the page and click "Continue"
you will get numerous prompts, read all info and if u agree click on "Accept"/"OK"/"Proceed"
finally u will get a "Create Unlock request" page, enter your IMEI (sometimes the last digit needs to be removed for this to work), name and email address
You should now receive your unique unlock key via EMAIL, SAVE THIS KEY SAFELY
Extract fastboot_with_Android_USB_file.rar and open fastboot folder
Hold SHIFT and right click on the background of the folder
Select 'Open command window here'
Connect your phone in fastboot mode (turn phone off, hold Volume UP button and plug in USB Cable) [make sure drivers are installed as explained above)
In the cmd windows type in fastboot.exe -i 0x0fce getvar version
If a value is returned (it will return 0.5), it means the phone is correctly connected
Type in fastboot.exe -i 0x0fce oem unlock 0xKEY and replace KEY with the key which u received earlier.
You're device should now be bootloader unlocked
If this tutorial is too much for you then itskapil wrote a step-by-step guide (and recorded a video also):
-Instructions: http://www.theandroidsoul.com/how-to-unlock-bootloader-xperia-arc-play-neo-pro/
-Video: http://www.youtube.com/watch?v=LRH3pC7MhEA
(the above videos and some steps are for Xperia 2011 devices, but most the steps are same for Xperia SP)
Relock procedure is posted here

Relocking Bootloader
With the latest release of Flashtool it is now possible to relock bootloader.
Download the latest flashtool from:
http://forum.xda-developers.com/showthread.php?t=2162907
Important
DO NOT USE ANY FTF TO RELOCK BOOTLOADER! THOSE OLD FTFs DO NOT WORK FOR THE 2013 DEVICES!!!
before u relock bootloader u have to be on pure stock kernel (flash only the kernel.sin using flashtool), else the device WILL NOT BOOT after relock
Steps:
now start Flashtool and click on BLU button
u will be asked to connect device in flashmode
once u connect the device u will get a prompt to "Relock"
click on it and when prompted disconnect the device

Mmm my device says that its not allowed for unlock (see the attachment) it means that i cant to unlock my bootloader for ever???theres not another method for to do it??????? what can be the reason for that its not allowed????? Sorry for my bad english and thanks
Sent from my C5303 using xda premium

@SERGI.3210
maybe your question could better fit Q&A section..
Anyway, try to unlock the bootloader despite the unlockinh allowed status
Sometimes you can unlock it even with "unlocking allowed:no"
(Btw if you care about the drm keys, make a backup of the TA partition before proceed)
Sent from my LT26i using xda app-developers app

Txh budy going to try this...
Sent from my C5303 using xda premium
I did the question in the q and a forum but no one answered me ..

please help
firmware: 12.0.A.1.211
C5302

zlebors said:
please help
firmware: 12.0.A.1.211
C5302
Click to expand...
Click to collapse
You must run cmd in directory of fastboot.exe
Sent from my C5302 using xda premium

kuriboo said:
You must run cmd in directory of fastboot.exe
Sent from my C5302 using xda premium
Click to expand...
Click to collapse
I dont have the fastboot.exe file, would you please re-upload coz the link is broken

What do I have to back up before I try this? And how to back those up.
My bootloader is 'no' but I have SIM unlocked it and going to give it a shot as was told by somebody that it could work, cheers.
Sent from my C5303 using xda app-developers app

Ok so I have a strange problem. I got my Xperia SP c5303 today and I'm using Windows 8 x64. I already managed to root the phone on the .257 firmware. When I try to connect the device in fastboot mode (holding volume + and plugging the usb cable to the computer), the LED turns blue and for a brief moment in device manager I can see that there is a device called Sony Fastboot Interface. The problem is, a little notification appears on my computer that the device wasn't recognized even though it appears to be installed correctly in device manager, and after about 5 seconds the phone automatically changes to charge mode.
I tried using Flashtool and when I plugged the phone in fastboot it did recognize it, but just for the 5 seconds that it stays that way. I already disabled driver signature enforcement and installed all Flashboot drivers but the phone just doesn't stay in fastboot mode.
BTW: Bootloader unlock allowed says yes

OsoAlgo said:
Ok so I have a strange problem. I got my Xperia SP c5303 today and I'm using Windows 8 x64. I already managed to root the phone on the .257 firmware. When I try to connect the device in fastboot mode (holding volume + and plugging the usb cable to the computer), the LED turns blue and for a brief moment in device manager I can see that there is a device called Sony Fastboot Interface. The problem is, a little notification appears on my computer that the device wasn't recognized even though it appears to be installed correctly in device manager, and after about 5 seconds the phone automatically changes to charge mode.
I tried using Flashtool and when I plugged the phone in fastboot it did recognize it, but just for the 5 seconds that it stays that way. I already disabled driver signature enforcement and installed all Flashboot drivers but the phone just doesn't stay in fastboot mode.
BTW: Bootloader unlock allowed says yes
Click to expand...
Click to collapse
Try to install drivers with this instruction http://forum.xda-developers.com/showthread.php?t=2170114
Sent from my C5303 using xda app-developers app

alivanov79 said:
Try to install drivers with this instruction http://forum.xda-developers.com/showthread.php?t=2170114
Sent from my C5303 using xda app-developers app
Click to expand...
Click to collapse
I saw that guide and I was going to try it but the phone doesn't stay long enough to be able to do it, once it changes to charging mode then it stops appearing in Device Manager.

I searched online and seems that a lot of people were having this problem with the Xperia line. In most cases it says that it's because drivers are not installed, but I believe I already installed them correctly. Here is how the device appears on my computer but it still automatically changes to charging mode after a couple of seconds.
EDIT: Oh man, someone please erase my posts haha, I actually confused the USB 3.0 and 2.0 in my computer... I connected the phone to a USB 2.0 port and it was detected correctly, I was able to unlock the bootloader.
EDIT2: How do you check if the bootloader is actually unlocked? (Just to be sure)

Do I have to leave my SD inserted when I unlock the bootloader so I won't lose all my data?

pakatsui said:
Do I have to leave my SD inserted when I unlock the bootloader so I won't lose all my data?
Click to expand...
Click to collapse
The external microSD card will not be deleted if you use Flashtool to unlock or relock the bootloader, only the first time you unlock it by the official Sony website. Even with that I think it doesn't wipe the external microSD

But is it safe to remove the external microSD before starting the unlocking process? I remember that I would get a bootloop on my old phone if I didn't have a microSD inserted while flashing stock rom.

DooMLoRD said:
Quick tutorial for unlocking & relocking the bootloader of the Xperia SP
this is the official way to unlock bootloader
if you want to keep ur DRM keys, first root device and then check this out
Warning!
This procedure will wipe the /data partition of your phone, so you will loose all ur stored data, settings. INTERNAL SDCARD will BE WIPED!!!
DRM keys WILL be lost forever
older Xperia devices sometimes got issues after unlock of bootloader (BRICK after FOTA update) - you have been warned
why to unlock bootloader?
u can flash custom ROMs/Kernels
u dont need to worry if the new firmware can be rooted or not as with unlocked bootloader u can always ROOT ur device
Sony gives sneak-peaks/preview builds of latest OS which requires unlocked bootloaders, as they did with Xperia 2011/2012 line, so who knows may be Sony may give early builds of next android OS
Most of this is taken from lollylost100's his tutorial from ARC thread (all credits for that concise tutorial go to him, i have elaborated on a few things and added device specific changes)
[ before we begin unlocking bootloader ]
get the IMEI code for ur device: type *#06# in phone dialer to find it out, note only the digits (no dashes)
download the fastboot package with usb drivers (alternate drivers if the ones in package dont work OR this)
IMPORTANT: if you are using Windows 8 you will need to enable few things to allow driver installation
make sure u have a windows PC with USB cable to connect the phone
power down ur phone and keeping the Volume Up button pressed connect the USB cable to PC this will trigger FASTBOOT mode and windows will start driver installation, extract the above package and point the driver install to that location (usb_driver) folder
once drivers are installed just disconnect cable and power on device
[ how to unlock ] (official way)
Go to: http://unlockbootloader.sonymobile.com/ and read everything!
At the bottom click 'Start Unlocking the Bootloader'
after u have verified that u can unlock bootloader, scroll to the bottom of the page and click "Continue"
you will get numerous prompts, read all info and if u agree click on "Accept"/"OK"/"Proceed"
finally u will get a "Create Unlock request" page, enter your IMEI (sometimes the last digit needs to be removed for this to work), name and email address
You should now receive your unique unlock key via EMAIL, SAVE THIS KEY SAFELY
Extract fastboot_with_Android_USB_file.rar and open fastboot folder
Hold SHIFT and right click on the background of the folder
Select 'Open command window here'
Connect your phone in fastboot mode (turn phone off, hold Volume UP button and plug in USB Cable) [make sure drivers are installed as explained above)
In the cmd windows type in fastboot.exe -i 0x0fce getvar version
If a value is returned (it will return 0.5), it means the phone is correctly connected
Type in fastboot.exe -i 0x0fce oem unlock 0xKEY and replace KEY with the key which u received earlier.
You're device should now be bootloader unlocked
If this tutorial is too much for you then itskapil wrote a step-by-step guide (and recorded a video also):
-Instructions: http://www.theandroidsoul.com/how-to-unlock-bootloader-xperia-arc-play-neo-pro/
-Video: http://www.youtube.com/watch?v=LRH3pC7MhEA
(the above videos and some steps are for Xperia 2011 devices, but most the steps are same for Xperia SP)
Relock procedure is posted here
Click to expand...
Click to collapse
Sir, any mirror link?? I want to download fastboot package to unlock my xsp. Thanks
Sent from my C5302 using XDA Premium 4 mobile app

agileart said:
Sir, any mirror link?? I want to download fastboot package to unlock my xsp. Thanks
Sent from my C5302 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
No response? I guess that means no then.

agileart said:
Sir, any mirror link?? I want to download fastboot package to unlock my xsp. Thanks
Sent from my C5302 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
fastboot.rar

My device doesn't stay in fastboot mode for more than 5 seconds :/
Can somebody help?

S1Boot error [ ... PHONE NOT SUPPORTED IN THIS MODE ... ] XPERIA SP

Hello,
PLEASE ! HELP ME ! I did something wrong and I set my phone dead ...
Could you help me ?
I downloaded CM 12 for Xperia SP. Then I downloaded TWRP and wiped Systems data. (Here I could did some mistake ...)
I downloaded all drivers and programs for flashing boot-loader to XPERIA SP.
In attachment I added those files which I have been using all this time, but there was no result ...
Testpin is found successfully ...
S1Boot result:
HTML:
Welcome to S1 tool.
That is small and crippled subset of SETOOL2 service tool.
SELECT FIRMWARE PACKAGES
YOU CAN SELECT SEVERAL PACKAGES WITH CTRL BUTTON
CHECKING PACKAGES ...
TO CONNECT NEXT PHONES
X10 Xperia,E10 Mini,E15 Xperia X8,U20 Mini Pro
LT15 Xperia ARC,MT15 Xperia NEO,R800 Xperia PLAY
PRESS AND HOLD "BACK" BUTTON...
ST18 Xperia RAY,ST15 Xperia Mini,SK17 Xperia Mini Pro
and Sony Xperia phone
PRESS AND HOLD "Volume Down" BUTTON...
PLEASE ATTACH TURNED OFF PHONE NOW
Waiting for phone ...
PROCEDURE STOPPED BY USER
supported phone was not detected
Elapsed:12 secs.
SELECT FIRMWARE PACKAGES
YOU CAN SELECT SEVERAL PACKAGES WITH CTRL BUTTON
CHECKING PACKAGES ...
DETACH USB CABLE FROM PHONE
REMOVE BATTERY FROM PHONE
ATTACH TESTPOINT
PRESS "READY", THEN ATTACH USB CABLE TO PHONE
will use DLOAD protocol ...
0808010600900000
0D0F50424C5F446C6F6164564552322E30
162001000100
17004001000100E1108800
1801000F43240892D02F0DC96313C81351B40FD5029ED98FF9EC7074DDAE8B05CDC8E1
PHONE NOT SUPPORTED IN THIS MODE
Elapsed:8 secs.
SELECT FIRMWARE PACKAGES
YOU CAN SELECT SEVERAL PACKAGES WITH CTRL BUTTON
CHECKING PACKAGES ...
DETACH USB CABLE FROM PHONE
REMOVE BATTERY FROM PHONE
ATTACH TESTPOINT
PRESS "READY", THEN ATTACH USB CABLE TO PHONE
will use DLOAD protocol ...
0808010600900000
0D0F50424C5F446C6F6164564552322E30
162001000100
17004001000100E1108800
1801000F43240892D02F0DC96313C81351B40FD5029ED98FF9EC7074DDAE8B05CDC8E1
PHONE NOT SUPPORTED IN THIS MODE
Elapsed:9 secs.
SELECT FIRMWARE PACKAGES
YOU CAN SELECT SEVERAL PACKAGES WITH CTRL BUTTON
Elapsed:16 secs.
This: PHONE NOT SUPPORTED IN THIS MODE message makes me CRY : ( !!!
So, do you have correct S1Boot_*.SIN_FILE_SET file ?
Thank you for your future response/answer/solution/help !

vv7v7 said:
Hello,
PLEASE ! HELP ME ! I did something wrong and I set my phone dead ...
Could you help me ?
I downloaded CM 12 for Xperia SP. Then I downloaded TWRP and wiped Systems data. (Here I could did some mistake ...)
I downloaded all drivers and programs for flashing boot-loader to XPERIA SP.
In attachment I added those files which I have been using all this time, but there was no result ...
Testpin is found successfully ...
S1Boot result:
HTML:
Welcome to S1 tool.
That is small and crippled subset of SETOOL2 service tool.
SELECT FIRMWARE PACKAGES
YOU CAN SELECT SEVERAL PACKAGES WITH CTRL BUTTON
CHECKING PACKAGES ...
TO CONNECT NEXT PHONES
X10 Xperia,E10 Mini,E15 Xperia X8,U20 Mini Pro
LT15 Xperia ARC,MT15 Xperia NEO,R800 Xperia PLAY
PRESS AND HOLD "BACK" BUTTON...
ST18 Xperia RAY,ST15 Xperia Mini,SK17 Xperia Mini Pro
and Sony Xperia phone
PRESS AND HOLD "Volume Down" BUTTON...
PLEASE ATTACH TURNED OFF PHONE NOW
Waiting for phone ...
PROCEDURE STOPPED BY USER
supported phone was not detected
Elapsed:12 secs.
SELECT FIRMWARE PACKAGES
YOU CAN SELECT SEVERAL PACKAGES WITH CTRL BUTTON
CHECKING PACKAGES ...
DETACH USB CABLE FROM PHONE
REMOVE BATTERY FROM PHONE
ATTACH TESTPOINT
PRESS "READY", THEN ATTACH USB CABLE TO PHONE
will use DLOAD protocol ...
0808010600900000
0D0F50424C5F446C6F6164564552322E30
162001000100
17004001000100E1108800
1801000F43240892D02F0DC96313C81351B40FD5029ED98FF9EC7074DDAE8B05CDC8E1
PHONE NOT SUPPORTED IN THIS MODE
Elapsed:8 secs.
SELECT FIRMWARE PACKAGES
YOU CAN SELECT SEVERAL PACKAGES WITH CTRL BUTTON
CHECKING PACKAGES ...
DETACH USB CABLE FROM PHONE
REMOVE BATTERY FROM PHONE
ATTACH TESTPOINT
PRESS "READY", THEN ATTACH USB CABLE TO PHONE
will use DLOAD protocol ...
0808010600900000
0D0F50424C5F446C6F6164564552322E30
162001000100
17004001000100E1108800
1801000F43240892D02F0DC96313C81351B40FD5029ED98FF9EC7074DDAE8B05CDC8E1
PHONE NOT SUPPORTED IN THIS MODE
Elapsed:9 secs.
SELECT FIRMWARE PACKAGES
YOU CAN SELECT SEVERAL PACKAGES WITH CTRL BUTTON
Elapsed:16 secs.
This: PHONE NOT SUPPORTED IN THIS MODE message makes me CRY : ( !!!
So, do you have correct S1Boot_*.SIN_FILE_SET file ?
Thank you for your future response/answer/solution/help !
Click to expand...
Click to collapse
Download a suitable firmware for your phone using XperiFirm.
Use flashtool v0.9.18.6 from here to flash it.

Zenith said:
Download a suitable firmware for your phone using XperiFirm.
Use flashtool v0.9.18.6 from url to flash it.
Click to expand...
Click to collapse
Look, I can't boot it anymore even to TWRP + no logo is shown ... is this helps ? Really ... Should I try to search firmware and flash in it and flash it by Flashtool ? How could I do this ? Should I do this:
Disassemble your phone;
Remove battery and connect each golden point on main board one by one to metal shield and attach usb cable.
(TestPoint)
Click to expand...
Click to collapse
Thanks !!

vv7v7 said:
Look, I can't boot it anymore even to TWRP + no logo is shown ... is this helps ? Really ... Should I try to search firmware and flash in it and flash it by Flashtool ? How could I do this ? Should I do this:
Thanks !!
Click to expand...
Click to collapse
You don't need to disassemble your phone.
Just turn it off by holding the yellow button on the back (till you feel 3 vibrations)
I assume you didn't unlock your bootloader.
Here's a detailed instruction on how to flash stock;
_____________________________________
Preparing Flashtool:
_____________________________________
Download Flashtool (v0.9.18.6)
Install
Go to installed folder\drivers (C:\Flashtool\drivers)
Install them (Flashmode, Fastboot, Viskan common)
Restart PC
Turn off phone
Press and Hold vol. down button and connect usb (flashmode drivers will be installed)
Disconnect
Press and Hold vol. up button and connect usb (fastboot drivers will be installed)
----------------------------------------------------------
Click to expand...
Click to collapse
_____________________________________
Flashing stock.ftf:
_____________________________________
Open Flashtool
Click 'Flash' button
Select 'Flashmode'
Locate and select .ftf file
When asks, switch off phone,
Press and Hold vol. down button and connect usb [Green LED will burn]
It'll detect the phone
Leave the vol button
Wait till the process is finished.
----------------------------------------------------------
Click to expand...
Click to collapse
However, if you did unlock your bootloader before,
you can directly fastboot-flash the TWRP.img and get access to recovery.
Welcome.
And you can hit the thanks button instead of saying it :good:

follow this ...
first download latest flashtool , install all drivers neeeded , and then download DoomLords kernel .elf (sorry cant post link , dont have permission yet)
when you downloaded kernel (in .elf format) download costum rom file ( cynogen,candy,aicp,xenonhd,ressurection remix etc) .zip file (for starters i recomend cynogen)
then press vol up and connect usb , when it connect it in fastboot mode click on lighting icon in left-top corner and select fastboot mod
it will show you pop up window , find option under DoomLords menu "Select Kernel for Flash" and when show you pop up navigate to DoomLords kernel .elf file you downloaded in first step and click OK
it will be done in few seconds and then you can disconnect usb cable from phone......
now use other phone ( or card reader) and transfer .zip costum rom file on sd card , put sd card in phone , press power and when phone turn on click vol up all the time until you get into recovery
now make full wipe (data,chache,dalwik), go on install zip file navigate to sd card and find .zip file (use vol up and down for moving up and down , power is like "enter") ...when you find .zip file install it , wait until installation finish , then reboot phone, wait until boot system first time (need few min)....download mini gapps flash it like ROM file
hope i helped you ..... now i brick my phone couple times per day , but there is always solution for problem, just ask for help , or find it by youself

Zenith said:
You don't need to disassemble your phone.
Just turn it off by holding the yellow button on the back (till you feel 3 vibrations)
I assume you didn't unlock your bootloader.
Here's a detailed instruction on how to flash stock;
However, if you did unlock your bootloader before,
you can directly fastboot-flash the TWRP.img and get access to recovery.
Welcome.
And you can hit the thanks button instead of saying it :good:
Click to expand...
Click to collapse
zaxxpp said:
first download latest flashtool , install all drivers neeeded , and then download DoomLords kernel .elf (sorry cant post link , dont have permission yet)
when you downloaded kernel (in .elf format) download costum rom file ( cynogen,candy,aicp,xenonhd,ressurection remix etc) .zip file (for starters i recomend cynogen)
then press vol up and connect usb , when it connect it in fastboot mode click on lighting icon in left-top corner and select fastboot mod
it will show you pop up window , find option under DoomLords menu "Select Kernel for Flash" and when show you pop up navigate to DoomLords kernel .elf file you downloaded in first step and click OK
it will be done in few seconds and then you can disconnect usb cable from phone......
now use other phone ( or card reader) and transfer .zip costum rom file on sd card , put sd card in phone , press power and when phone turn on click vol up all the time until you get into recovery
now make full wipe (data,chache,dalwik), go on install zip file navigate to sd card and find .zip file (use vol up and down for moving up and down , power is like "enter") ...when you find .zip file install it , wait until installation finish , then reboot phone, wait until boot system first time (need few min)....download mini gapps flash it like ROM file
hope i helped you ..... now i brick my phone couple times per day , but there is always solution for problem, just ask for help , or find it by youself
Click to expand...
Click to collapse
THANK YOU GUYS ! I'LL TRY SOON AND REPORT HERE THE RESULT !!! THANK YOU ! I hit Thanks button : )

vv7v7 said:
THANK YOU GUYS ! I'LL TRY SOON AND REPORT HERE THE RESULT !!! THANK YOU ! I hit Thanks button : )
Click to expand...
Click to collapse
Welcome!
:good: