[Q] Help To unlock bootloader - Xperia Arc Q&A, Help & Troubleshooting

Hi,
I had unlocked the boot loader of my xperia Arc and all was good till i wanted to ogoback to stock for sometime .
In the quest to get the stock firmware installed i relocked the bootloader with the .ftf provided . now i am unable to unlock the boot loader it keeps saying failed . i have even requested for a new unlock key and still fails..
Please provide me with any suggestions i can try
Also the device ID seems to read - INFO - Connected device info: [ CB5A1DVWQP&ZLP ]
Is this correct or have i done something wrong??
Thanks and Regards,
Archie

When you unlock your boot loader its permanent, and it doesn't change even after flashing ftf. So you do not need to keep unlocking it.
Sent from my PAC-ed LT18i.
Press the thanks button if I helped.

tangosierra_ said:
When you unlock your boot loader its permanent, and it doesn't change even after flashing ftf. So you do not need to keep unlocking it.
Sent from my PAC-ed LT18i.
Press the thanks button if I helped.
Click to expand...
Click to collapse
Bootloader can be relocked by specific FTF file, if it was done by official method.

What I meant was the stock ftf files, not the BL reloxk ftf.
Sent from my PAC-ed LT18i.
Press the thanks button if I helped.

Related

[Q] Can't flash my xperia arc

hello
im trying to flash my xperia arc to ics but it wont flash
it always stuck on vendor.sin or system.sin
plz help
use the latest flashtool and make sure verification is unticked before flashing
it still stuck on system.sin
when the flashing starts its all good until it reaches to flashing vendor
then the percentage is still the same 10%
The most common cause locked bootloader, have you have it unlocked?
how can i know if its locked?
i cant use my phone
i have the logo of sony and then i see a phone under a caution sign
here http://unlockbootloader.sonymobile.com/instructions
knowing that you can't use your phone, just follow instruction to unlock it (don't read step 1-2, just jump to step 3)
cmiiw
have u ever tried to unlock it?or atleast do u remember? C'mon dig up the memories
what is IMEI?
Crypto123 said:
what is IMEI?
Click to expand...
Click to collapse
well its like a digital fingerprint of a device..they are unique..no two fingerprints are same..they are 15 digits code.. Just key in *#06# on your mobile phone and it will display its IMEI number..just follow the instruction to unlock the bootloader man..
or you can find your IMEI in your phone box if i'm not mistaken
You can find the IMEI underneath the battery as well.
Swyped from my SE Xperia arc (LT15i) using Tapatalk 2
i unlocked the bootloader
and still the flashing cant be done
hey
I have same problem too, but i know my fault. firstly i unlocked and then i entered to cwm in phone and i tried to flash a rom (it must be this: MooDeD ICS ROM). and now phone wont start, only SONY logo open and freeze. What can i do for restore it?
Thank you very much.
jimitkewl said:
I have same problem too, but i know my fault. firstly i unlocked and then i entered to cwm in phone and i tried to flash a rom (it must be this: MooDeD ICS ROM). and now phone wont start, only SONY logo open and freeze. What can i do for restore it?
Thank you very much.
Click to expand...
Click to collapse
its mean your phone bootloop..Flash again on flashTool... its because many reason... wrong read instruction or broken file...
arc_n_krizt said:
its mean your phone bootloop..Flash again on flashTool... its because many reason... wrong read instruction or broken file...
Click to expand...
Click to collapse
Thank you. And I fixed the problem by using Sony Update Service.

Xperia ion Bootloader Unlocking & Relocking

Taken from [Tutorial] Xperia S/P/U/Sola Bootloader Unlocking & Relocking and modified slightly for the ion. I take no credit for this tutorial.
Quick tutorial for unlocking & relocking the bootloader of the Xperia ion.
This is the official way to unlock bootloader
Warning!
This procedure will wipe the /data partition of your phone, so you will loose all ur stored data, settings. SDCARD will NOT BE WIPED!!!
DRM keys WILL be lost forever
Why should I unlock the bootloader?
You can flash custom ROMs/Kernels.
You don't need to worry if the new firmware can be rooted or not as with unlocked bootloader you can always ROOT your device.
SE/Sony gives sneak-peaks/preview builds of latest OS which requires unlocked bootloaders, as they did with Xperia 2011 line (they had ICS alpha/beta), so who knows may be SE/Sony may give early builds of ICS (JellyBean???)
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 your 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)
Make sure u have a windows PC with USB cable to connect the phone
Power down your 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'
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 phone dial pad 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 you have verified that you can unlock bootloader, scroll to the bottom of the page and click "Continue"
You will get "Are you sure prompt" accept it by clicking "yes i am sure" (i assume that you have read an understood it)
Then accept the "legal terms"
Finally you 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, its displayed on screen, 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 you received earlier.
Your 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...-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 ion)
Info on Relocking bootloader is in next post
Relocking bootloader
RELOCKING BOOTLOADER WILL ALLOW YOU TO GET NEWEST UPDATES & REPAIR DEVICE USING SEUS/PCC
Before we begin relocking the bootloader make sure that u have flashtool download & installed
You can get the latest version of FlashTool from:
http://androxyde.github.com/Flashtool/
Download link is under "Installation" tab
If you have not use FlashTool before read this thread:
http://forum.xda-developers.com/showthread.php?t=1526866
Download this FTF:
Xperia ion -> LT28-ION_Relock_bootloader_Dogsly-TEST.ftf // Mirror 1
Flash this FTF via FlashTool:
When it says enter flashmode, power down device and keeping VOLUME DOWN button pressed connect usb cable to phone, the device will now enter flashmode (green LED)
After this file is flashed reboot phone
Bootloader will now be relocked!!!
Incase device doesn't boot DO NOT PANIC... You can flash stock firmware FTF anytime to get back to stock ROM
P.S.: there is no official way to relock bootloader
So because my phone says I can't unlock the bootloader, does that mean I can never unlock the bootloader? Or do I have to wait to be able to root it first?
PS: I got my ion from Best Buy so is that why? Will I ever be able to unlock the BL ? I've rooted and unlocked my x10, back in the old days lol but I'm just wondering if there's any difference with getting a phone from at&t directly or from the sony store and best buy.
Auggy99 said:
So because my phone says I can't unlock the bootloader, does that mean I can never unlock the bootloader? Or do I have to wait to be able to root it first?
Click to expand...
Click to collapse
Have to wait to see if another way to unlock the bootloader is discovered. Root and unlocking the bootloader are two different things that accomplish or allow different things you can do on the phone.
IE rooting allows you to uninstall system apps & bloatware, backup apps/data, make changes to build.prop etc. Unlocking the bootloader will give you access to fastboot so you can flash custom roms/kernels and other images such as a pre-rooted system image to gain root.
I wonder. If we can not unlock the bootloader for some LT28at, why is there a key to unlock it? I did the Sony bootloader unlock for fun and apparently they have a key for my LT28at even though it says bootloader unlock is not allowed.
Bach415 said:
I wonder. If we can not unlock the bootloader for some LT28at, why is there a key to unlock it? I did the Sony bootloader unlock for fun and apparently they have a key for my LT28at even though it says bootloader unlock is not allowed.
Click to expand...
Click to collapse
You can unlock bootloader on the LT28i and, accordingly, there is a file to be relock bootloader LT28i
dogsly said:
You can unlock bootloader on the LT28i and, accordingly, there is a file to be relock bootloader LT28i
Click to expand...
Click to collapse
I understand that works for lt28i but I'm referring to lt28at the us model of the ion and why there is a bootlloader unlock code when we can't unlock it.
see if it works
Has anyone with an ion that has
Bootloader unlock allowed says Yes
Click to expand...
Click to collapse
tried to unlock it via the sony site and if you did and it was successful have you tried to relock it using the file linked above? Would be nice to know if that works.
Possible fix?
If the LT28i can be unlocked, what if we flash the international firmware on our LT28at's and then do the LT28i method? Maybe a stupid question but this is the first phone I've had that's a challenge to do stuff like unlocking and rooting. My last phone (HTC Aria) was extremely easy.
SU1CiDE said:
If the LT28i can be unlocked, what if we flash the international firmware on our LT28at's and then do the LT28i method? Maybe a stupid question but this is the first phone I've had that's a challenge to do stuff like unlocking and rooting. My last phone (HTC Aria) was extremely easy.
Click to expand...
Click to collapse
Flashing firmwares does not change the ability to unlock the bootloader.
Spectre51 said:
Flashing firmwares does not change the ability to unlock the bootloader.
Click to expand...
Click to collapse
Kinda figured that
I tried to relock the bootloader. The flash pass but the phone can't turn on after that.
*I reflash the stock kernel again and the phone can power on now.
So here is the result, once you relock bootloader, you need to flash back the stock kernel in other to turn on the phone. Hopefully this will help those people who got stuck after relock bootloader.
Hello guys
I was just wondering, if bootloader unlock or flashing cutom kernel will allow to use sim cards from other mobile operators (European for ex.) ?
I have an ability to buy this device in us through my friend. but Im interested if I would be able to use it in Europe I was thinking of buying xperia p or s, but they dont have microsd card support.
Im not interested in using LTE networks. Just common 2g.
I planning to use it like a second android device as a multimedia player instead of my galaxy s wifi5.0. (because of good sound quality and other features).
Thanx a lot for responses
Assyle said:
Hello guys
I was just wondering, if bootloader unlock or flashing cutom kernel will allow to use sim cards from other mobile operators (European for ex.) ?
I have an ability to buy this device in us through my friend. but Im interested if I would be able to use it in Europe I was thinking of buying xperia p or s, but they dont have microsd card support.
Im not interested in using LTE networks. Just common 2g.
I planning to use it like a second android device as a multimedia player instead of my galaxy s wifi5.0. (because of good sound quality and other features).
Thanx a lot for responses
Click to expand...
Click to collapse
No. You can't unlock the bootloader of the lt28at and you can't sim unlock it either. Best bet is get an international version not one from the US.
Sent from my LT28at using Tapatalk 2
Spectre51 said:
No. You can't unlock the bootloader of the lt28at and you can't sim unlock it either. Best bet is get an international version not one from the US.
Sent from my LT28at using Tapatalk 2
Click to expand...
Click to collapse
ok. thanx
probably wait for Xperia acro S... probably will be sold in europe in nearest future.
Drivers aren't working for my device. The alternative drivers link isn't working. Can someone please upload the alternative drivers. Thank you.:good:
i'm sorry if it was mentioned, but i didn't find . is there a way to unlock the carrier already for lt28at ? i don't mind losing the lte.
apkraven said:
i'm sorry if it was mentioned, but i didn't find . is there a way to unlock the carrier already for lt28at ? i don't mind losing the lte.
Click to expand...
Click to collapse
I think you can switch the rom to international version but it will still be bootloader locked. Not sure about carrier
Sent from my Sony Xperia Ion
apkraven said:
i'm sorry if it was mentioned, but i didn't find . is there a way to unlock the carrier already for lt28at ? i don't mind losing the lte.
Click to expand...
Click to collapse
Read this thread: http://forum.xda-developers.com/showthread.php?t=1761578
Sent from my LT22i using Tapatalk 2

[Q] xperia arc s fastboot mode

HEllo,
Can I boot into fastmode if my xperia has an unlockable bootloader?
Thank you
rjpcardoso said:
HEllo,
Can I boot into fastmode if my xperia has an unlockable bootloader?
Thank you
Click to expand...
Click to collapse
Can. Turn-off phone, then press and hold "Menu" button. Connect phone to computer. The LED will turn to blue color. Now, it is in fastboot mode.
...
hyper200 said:
...
Click to expand...
Click to collapse
If you have nothing to say then don't post.
pc-ox said:
Can. Turn-off phone, then press and hold "Menu" button. Connect phone to computer. The LED will turn to blue color. Now, it is in fastboot mode.
Click to expand...
Click to collapse
are you sure about this? I don't seem to be able to.
BernardoCalhanas said:
are you sure about this? I don't seem to be able to.
Click to expand...
Click to collapse
Then your bootloader isn't unlocked.
Keypad, type in *#*#7378423#*#*, Service Info, Configuration
If you see this
Code:
Bootloader unlocked: Yes
or this
Code:
Bootloader unlock allowed: Yes
then you can enter fastboot mode.
If you see this
Code:
Bootloader unlock allowed: No
then you can not enter fastboot.
Anymore questions?
Fastboot problem!
--
Someguyfromhell said:
Keypad, type in *#*#7378423#*#*, Service Info, Configuration
If you see this
Code:
Bootloader unlocked: Yes
or this
Code:
Bootloader unlock allowed: Yes
then you can enter fastboot mode.
If you see this
Code:
Bootloader unlock allowed: No
then you can not enter fastboot.
Anymore questions?
Click to expand...
Click to collapse
hello,
i m using xperia arc s and having Bootloader unlock allowed: Yes
in flashtool 0.9.10.1 i flash my device completely, then i attach a phone for fastboot,
everything going right, but when i click Lighting ICON => fastboot => OK nothing happen
need your help urgent
thanks in advance
You have to make sure that your phone has unlocked bootloader, if it says "bootloader unlock allowed: yes" it doesn't mean your phone is unlocked, it only tells you that it can be unlocked.
If you have TrackID, try to play it, if it can be played, then the bootloader is still locked.
For unlocking, try the link below. And don't forget to thank them.
http://forum.xda-developers.com/showthread.php?t=1133650
I hope it help, Cheers
Bagne said:
You have to make sure that your phone has unlocked bootloader, if it says "bootloader unlock allowed: yes" it doesn't mean your phone is unlocked, it only tells you that it can be unlocked.
If you have TrackID, try to play it, if it can be played, then the bootloader is still locked.
For unlocking, try the link below. And don't forget to thank them.
http://forum.xda-developers.com/showthread.php?t=1133650
I hope it help, Cheers
Click to expand...
Click to collapse
Thanks bro,
But, i found that Xperia Ultimate HD can also install on Locked Boot loader
You can find it in Developer's Page
Q 16: Can I install this ROM on locked bootloader?
Yes. You can without Problems.
I use flash tool 0.9.10.1 & LuPus Kerenl
need help
er.mayankpatel said:
hello,
i m using xperia arc s and having Bootloader unlock allowed: Yes
in flashtool 0.9.10.1 i flash my device completely, then i attach a phone for fastboot,
everything going right, but when i click Lighting ICON => fastboot => OK nothing happen
need your help urgent
thanks in advance
Click to expand...
Click to collapse
Put your phone into fastboot mode first (turn off your phone, hold down menu button and then connect the USB cable, blue LED shall light on).
Bagne said:
You have to make sure that your phone has unlocked bootloader, if it says "bootloader unlock allowed: yes" it doesn't mean your phone is unlocked, it only tells you that it can be unlocked.
If you have TrackID, try to play it, if it can be played, then the bootloader is still locked.
For unlocking, try the link below. And don't forget to thank them.
http://forum.xda-developers.com/showthread.php?t=1133650
I hope it help, Cheers
Click to expand...
Click to collapse
Only original TrackID, provided with phone. The one from Play Store works with unlocked bootloader aswell.
Bagne said:
You have to make sure that your phone has unlocked bootloader, if it says "bootloader unlock allowed: yes" it doesn't mean your phone is unlocked, it only tells you that it can be unlocked.
If you have TrackID, try to play it, if it can be played, then the bootloader is still locked.
For unlocking, try the link below. And don't forget to thank them.
http://forum.xda-developers.com/showthread.php?t=1133650
I hope it help, Cheers
Click to expand...
Click to collapse
Thanks For the Reply,
But, i want to flash my phone with XPERIA Ultimate HD, and on the Developer's page someone ask the question
Q 16: Can I install this ROM on locked bootloader?
Yes. You can without Problems.
if Yes, then how can i do this???????????
Please help, i just love this ROM
er.mayankpatel said:
Thanks For the Reply,
But, i want to flash my phone with XPERIA Ultimate HD, and on the Developer's page someone ask the question
Q 16: Can I install this ROM on locked bootloader?
Yes. You can without Problems.
if Yes, then how can i do this???????????
Please help, i just love this ROM
Click to expand...
Click to collapse
Just DON'T install it. My Xperia Arc s is locked bootloader and i tried to install Ultimate HD Rom twice, but no hope after installation Sony logo stucks!
first time i solved it by using Update Service.
second time (NOW) still on Sony logo and Update Service isn't working, it says "You already have the latest software installed"
so for now I'm searching for a way to fix it
dark-shadow93 said:
Just DON'T install it. My Xperia Arc s is locked bootloader and i tried to install Ultimate HD Rom twice, but no hope after installation Sony logo stucks!
first time i solved it by using Update Service.
second time (NOW) still on Sony logo and Update Service isn't working, it says "You already have the latest software installed"
so for now I'm searching for a way to fix it
Click to expand...
Click to collapse
Thanks dear,
I think it happen due to you have not unlock the bootloader
the same thing done with me,
now i am trying to unlock my bootloader
Use this link :- http://forum.xda-developers.com/showthread.php?t=1034087
After try this, Please tell me how can you do this????
Thanks in Advance
Someguyfromhell said:
Put your phone into fastboot mode first (turn off your phone, hold down menu button and then connect the USB cable, blue LED shall light on).
Only original TrackID, provided with phone. The one from Play Store works with unlocked bootloader aswell.
Click to expand...
Click to collapse
Thanks For your reply,
I do the same what you tell, after putting my phone in fast boot then i do the things in Flashtool.
But nothing hapen
Please advice, what to do
er.mayankpatel said:
Thanks dear,
I think it happen due to you have not unlock the bootloader
the same thing done with me,
now i am trying to unlock my bootloader
Use this link :- http://forum.xda-developers.com/showthread.php?t=1034087
After try this, Please tell me how can you do this????
Thanks in Advance
Click to expand...
Click to collapse
Just SOLVED IT! :laugh:
I flashed stock firmware using flash tool
stock firmware link by a member in the forum: http://www.mediafire.com/?rhr59r4o6oarnfx
then::
1. rooted the device
2. installed CWM
3. wiped everything
4. installed UHD and choosing just one app to install
5. unticked reboot
6. wiped Dalvik Cache ONLY
7. reboot device from CWM
8. Enjoyed UHD
UHD is stock based so it will work on locked boot loader, if it doesnt then you're doing something wrongly.
Sent from my Xperia Arc S using xda premium
tangosierra_ said:
UHD is stock based so it will work on locked boot loader, if it doesnt then you're doing something wrongly.
Sent from my Xperia Arc S using xda premium
Click to expand...
Click to collapse
Not necessarily! choosing to install all the apps in the AROMA Installer causes sticking on Sony logo in locked bootloaders.
tangosierra_ said:
UHD is stock based so it will work on locked boot loader, if it doesnt then you're doing something wrongly.
Sent from my Xperia Arc S using xda premium
Click to expand...
Click to collapse
Thanks,
But, i flash my device with the following FTF file LT18i_4.1.B.0.587_(1254-2716).ftf
If the problem comes due to this file, then which one is suitable for my ARC S ????
Please reply

xperia pro bricked

i have a xperia pro....i finished unlocking bootloader rooting and installing x-parts......then suddenly i saw pacman rom 4.1 i was exited:fingers-crossed:.....so i schedule to go to recovery mode on reboot via x parts .....when i entered it i projected my rom and clicked install ....it stared but after a while it aborted ..so i clicked on a option reboot.....after it my phone remains with sony logo.....(not erission )because it was at offical ics......
so now i want to relock my bootloader so i can install and recover my phone like it was.........i have tried things but not worked.......please,u can help me with relock bootloader orany other method to repair my phone....when i connect it in sus it says modified software...and it stoped right there
please help me..........i felling very low:crying::crying:
I think you can keep your bootloader unlocked.
Just download an official ROM FTF file for your phone and flash it using Androxyde's FlashTool. It should debrick your phone. Then, you can repeat your experiments with custom ROMs.
Regards, Pavel
i have tried using it but no change..
patrol-cz said:
I think you can keep your bootloader unlocked.
Just download an official ROM FTF file for your phone and flash it using Androxyde's FlashTool. It should debrick your phone. Then, you can repeat your experiments with custom ROMs.
Regards, Pavel
Click to expand...
Click to collapse
i have also tried to relock bootloader but i failed .......so i just want to lock bootloader again so i can repair it by update service
or give me any other method to repair my phone ......on screen sony comes and stops for 3 -45 min
please help me if i succeed:crying::crying: by your help coffe or bear to u:good::good:

[Q] Help me unlock the bootloader of Xperia m dual!

I'm using Xperia m dual c2004.I tried to unlock the bootloader. Several times using the procedure given in the Sony developer, did everything correctly. But the phone goes into a bootloop after which the only option is flashing the stock rom.
I tried unlocking the bootloader the otherway by using flash tool but it doesn't have my phone's drivers. And the link to download them doesn't work anymore (found it in a thread)
The are no roms for lb for my device (plz tell me if you know any)
I checked my bootloader status by going into *#*#bla bla code then service tests and security And the service Status was active which means bootloader is locked.
When I go to service menu and config my phone's rooting status is showing bootloader unlocked.buti don't think it is ul but it just has the Permissions.
Please help me I'm not able to flash roms because of this.
,
hrajwade said:
But the phone goes into a bootloop after which the only option is flashing the stock rom.
Click to expand...
Click to collapse
When you successfully unlocked bootloader you should go to bootloader mode with key combination when restarting phone and install custom recovery. Naturally without loaded drivers in computer it has no sense to try it.

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