Develop Bugs

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

Relock bootloader Acro S

I have now successfully relocked my bootloader and returned to stock ROM with my Acro S. I used the instructions and relock-files for Xperia S found here: http://forum.xda-developers.com/showthread.php?t=1527159
It´s good to know that it´s no problem to return to stock and a locked bootloader. I updated via Sony PC Companion so everything seems to be OK.

so which FTF file you use?
there is no FTF file for arco s ... what should we do?
_________________________
freddestarfighter said:
I have now successfully relocked my bootloader and returned to stock ROM with my Acro S. I used the instructions and relock-files for Xperia S found here: http://forum.xda-developers.com/showthread.php?t=1527159
It´s good to know that it´s no problem to return to stock and a locked bootloader. I updated via Sony PC Companion so everything seems to be OK.
Click to expand...
Click to collapse

thyk888358 said:
there is no FTF file for arco s ... what should we do?
_________________________
Click to expand...
Click to collapse
Use the FTF-file for Xperia S.

this way DRM keys are lost forever, check Trak-ID

veimus said:
this way DRM keys are lost forever, check Trak-ID
Click to expand...
Click to collapse
The TrackID-app works just fine, or what else do you mean by checking Trak-ID?

when you unlock bootloader you lose DRM keys, and some software installed on the phone stops working, i.e. trackID.

And "share location" in the SMS app will not work anymore once you unlocked the bootloader.

thanks...
freddestarfighter said:
Use the FTF-file for Xperia S.
Click to expand...
Click to collapse

By using the Xperia S ftf, don't you lose access to your SD card?

It's no use!
Because when you unlock bootloader, you must go to SONY net to get unlock code.
SONY know you unlock bootloader!
When your Phone get something wrong and send back to SONY, they will say no guarantee. Because you have unlock bootloader.
Do you have see the instruction at SONY net when you unlock bootloader?
So what advantage when you unlock bootloater and relock it?

dew.man said:
By using the Xperia S ftf, don't you lose access to your SD card?
Click to expand...
Click to collapse
no because after you flash the relock ftf is only for the bootloader, you still have to flash stock firmware again or else it won't boot
---------- Post added at 12:36 PM ---------- Previous post was at 12:32 PM ----------
ri7672 said:
Because when you unlock bootloader, you must go to SONY net to get unlock code.
SONY know you unlock bootloader!
When your Phone get something wrong and send back to SONY, they will say no guarantee. Because you have unlock bootloader.
Do you have see the instruction at SONY net when you unlock bootloader?
So what advantage when you unlock bootloater and relock it?
Click to expand...
Click to collapse
i think he knows that already, he probably wanted to switch back to stock rom from cyanogenmod, and just happened that there's a new rom out but nobody posted one that's for his region, so he needed to use pcc.

ri7672 said:
Because when you unlock bootloader, you must go to SONY net to get unlock code.
SONY know you unlock bootloader!
When your Phone get something wrong and send back to SONY, they will say no guarantee. Because you have unlock bootloader.
Do you have see the instruction at SONY net when you unlock bootloader?
So what advantage when you unlock bootloater and relock it?
Click to expand...
Click to collapse
I´m aware of that. But some key-functions that I use don´t work in CM, that is ANT+ and support for Camera-button wake to camera-app.

veimus said:
when you unlock bootloader you lose DRM keys, and some software installed on the phone stops working, i.e. trackID.
Click to expand...
Click to collapse
I have unlocked my bootloader and then relocked it as stated above. But my TrackID app works just fine apparently, so that doesn´t seem affected. But I cannot send my location within the SMS-app, that´s the only thing I have encountered so far with stock-rom after relock.

freddestarfighter said:
I have unlocked my bootloader and then relocked it as stated above. But my TrackID app works just fine apparently, so that doesn´t seem affected. But I cannot send my location within the SMS-app, that´s the only thing I have encountered so far with stock-rom after relock.
Click to expand...
Click to collapse
Hi, I've relocked my arc s bootloader, how do I confirm that the relocking is success (assuming no error mean GO)& as regard of the trackid, I will get [5] Error. Please try again later. so I lost my DRM but ota update with locked bootloader will not brick hp.
11/018/2012 00:18:50 - INFO - Flashing preset
11/018/2012 00:18:50 - INFO - TA value : [00, 00, 00, B0, 00, 00, 00, 00, 00, 00, ]
11/018/2012 00:18:50 - INFO - Flashing finished.
11/018/2012 00:18:50 - INFO - Now unplug the device and power it on

and if i want unlock my bootloader what need?

veimus said:
when you unlock bootloader you lose DRM keys, and some software installed on the phone stops working, i.e. trackID.
Click to expand...
Click to collapse
You're wrong man, i unlock both acro s and arc s, installed CM10 and track id works fine. Never got a problem with DRM keys.
---------- Post added at 08:40 AM ---------- Previous post was at 08:37 AM ----------
thyk888358 said:
there is no FTF file for arco s ... what should we do?
_________________________
Click to expand...
Click to collapse
Use this http://forum.xda-developers.com/showthread.php?t=1934330

Is it possible to unlock, flash CM, then relock without reverting to stock and still keeping CM?

YoBob said:
Is it possible to unlock, flash CM, then relock without reverting to stock and still keeping CM?
Click to expand...
Click to collapse
obviously no

ri7672 said:
Because when you unlock bootloader, you must go to SONY net to get unlock code.
SONY know you unlock bootloader!
When your Phone get something wrong and send back to SONY, they will say no guarantee. Because you have unlock bootloader.
Do you have see the instruction at SONY net when you unlock bootloader?
So what advantage when you unlock bootloater and relock it?
Click to expand...
Click to collapse
Thats not even true. If ur sending in ur phone for warranty with unlocked bootloader. Sony takes a fee to restore bootloader. Else just relock bootloader urself before sending it in. So plz stop spreading lies and plz use a brain before posting.

Hi, my Acro S has an unlocked bootloader. If I flash this FTF no brand file. Will my bootloader will be locked again? Because as you've stated that the file wasn't modified in any way. Correct me if I'm wrong . Thanks.

[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

[Q] DRM still lost after unlock via testpoint

Hi, everyone
I have my experience about unlock bootloader, I have unlocked bootloader via official Sony method, when DRM lost, I decided to relock again, flash stock FW via flashtool and repair via PC Companion, after that DRM has been recovered.
So, I've tried to unlock bootloader via testpoint using S1tool, after unlocked, flashed custom kernel and ROM. DRM still lost
Any solution ?

danisariandi said:
Hi, everyone
I have my experience about unlock bootloader, I have unlocked bootloader via official Sony method, when DRM lost, I decided to relock again, flash stock FW via flashtool and repair via PC Companion, after that DRM has been recovered.
So, I've tried to unlock bootloader via testpoint using S1tool, after unlocked, flashed custom kernel and ROM. DRM still lost
Any solution ?
Click to expand...
Click to collapse
When you unlocked via Sony method, you lost your DRM forever . There's no way to recover it. So, I'm pretty sure you're mistaken about the recover of the DRM keys.

panda0 said:
When you unlocked via Sony method, you lost your DRM forever . There's no way to recover it. So, I'm pretty sure you're mistaken about the recover of the DRM keys.
Click to expand...
Click to collapse
When I claimed warranty, I relocked, repair via PC Companion, DRM worked ( transfer music via media go works ) then when I unlocked via testpoint, DRM LOST !! IT'S IMPOSSIBLE

danisariandi said:
When I claimed warranty, I relocked, repair via PC Companion, DRM worked ( transfer music via media go works ) then when I unlocked via testpoint, DRM LOST !! IT'S IMPOSSIBLE
Click to expand...
Click to collapse
Never heard of a way to restore the DRM Keys after unlocking via official method. There's some thread that explains this? I've read from many sources (xda, setool) that once you unlock the official way, you lost the DRM keys forever.

Maybe when I repaired via SUS, DRM recovered

danisariandi said:
Maybe when I repaired via SUS, DRM recovered
Click to expand...
Click to collapse
That's not possible AFAIK. I've searched again and the only thing I found is: You lost your DRM Keys.
DRM Keys are stored in a trim area and when you unlocked with the official method, they're erased. SEUS or SUS can't restore.
At least that's what I've read about this.
Btw, I sent my previous lt18 to Sony warranty without the Keys and they returned a new one. So, the fact that they didn't complain, doesn't mean much. But let's wait for more experienced members opinion. That's all that I know about this.

Ok thanks, I'll kepp my warranty as well

Have you read this post about retrieving drm keys http://forum.xda-developers.com/showthread.php?t=1855798
Sent from my LT15i using xda app-developers app

cokey77 said:
Have you read this post about retrieving drm keys http://forum.xda-developers.com/showthread.php?t=1855798
Sent from my LT15i using xda app-developers app
Click to expand...
Click to collapse
I've read it now. Let's focus some points:
No.. Working Music info download or Track ID does not prove that DRM is recovered. There are workarounds to make stuff like FBMedia like or TrackID work..
From: http://forum.xda-developers.com/showpost.php?p=30815987&postcount=11
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Yes I know what you are saying.. Like I said using your method does make em work(there are other work arounds too).. but the DRM is not recovered. The system is just fooled..
From: http://forum.xda-developers.com/showpost.php?p=30823437&postcount=15
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The only post that supports that might be possible is this one (but, in my humble opinion, this is just a bogus information):
Some info from MDPI device forums.
They have been saying, that just relocking bootloader and unlocking via test point method recovers DRM. No need to reflash ROM/kernel or anything else. Neither you need any Walkman apps or stuff.
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I strongly believe that like heinrichkaiser said in that thread: This method make the apps work, fooling the system, but don't restore DRM.
They even linked some topics in the setools forum, and no one (even the_laser) could confirm that there's a way to restore. That doesn't mean that it's impossible to make some functionalities work after the loss of the DRM Keys, as you can read here:
ok here's the simple steps after unlocking bootloader.
1. Uninstall the old TrackID (its a system app so u need root)
2. Download the latest TrackID on android market (the silver one/not the old blue)
3. Backup the FBMusicLikes.apk/Music Likes app
4. Uninstall the FBMusicLikes.apk/Music Likes app (its a system app so u need root)
5. Reinstall the FBMusicLikes.apk/Music Likes app
6. connect to net and try it, its now working again.
thanks to rioener for this discovery
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EDIT: Other post Blagus in the "[Tutorial] Relock bootloader!" thread.
You still can't get DRM back. It's gone from the phone!
From: http://forum.xda-developers.com/showthread.php?t=1134335
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+1 Thread about it:
http://forum.xda-developers.com/showthread.php?t=1404972

[Q] Rooted, unlocked and on CM - how to return to locked, unrooted stock?

Hi all
I need to send my ZL to the Sony repair centre, as it has a serious fault.
I have a rooted phone, with an unlocked bootloader and am currently running CM10.2. Can anyone tell me how to relock? To do that, I need stock firmware, but I don't know how to flash it as I've seen warnings that I can't flash this while unlocked. The official Sony software doesn't let me update, as it recognises I'm running "modified software."
I've downloaded the latest flashtool, but that's it so far. All help appreciated and yes, I have looked but couldn't find anything that wasn't conflicting information.
Thanks guys.
schnide

schnidex said:
Hi all
I need to send my ZL to the Sony repair centre, as it has a serious fault.
I have a rooted phone, with an unlocked bootloader and am currently running CM10.2. Can anyone tell me how to relock? To do that, I need stock firmware, but I don't know how to flash it as I've seen warnings that I can't flash this while unlocked. The official Sony software doesn't let me update, as it recognises I'm running "modified software."
I've downloaded the latest flashtool, but that's it so far. All help appreciated and yes, I have looked but couldn't find anything that wasn't conflicting information.
Thanks guys.
schnide
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have u made a ta backup?

bhavstech said:
have u made a ta backup?
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Hi - I have not. I've just downloaded the stock ftf and am about to try and Flashtool it, so I hope that's the right way to go

schnidex said:
Hi - I have not. I've just downloaded the stock ftf and am about to try and Flashtool it, so I hope that's the right way to go
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And according to Flashtool, it seems to have worked. Just trying to get my damn phone to turn on for long enough to find out now for myself.

schnidex said:
And according to Flashtool, it seems to have worked. Just trying to get my damn phone to turn on for long enough to find out now for myself.
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actually u cannot get ur warranty back bcoz u have lost ur bravia engine and drm keys

bhavstech said:
actually u cannot get ur warranty back bcoz u have lost ur bravia engine and drm keys
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Oh ****.

schnidex said:
Oh ****.
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but u can at least giv it a try show it to the service centre and hope they dont recognize

schnidex said:
Hi - I have not. I've just downloaded the stock ftf and am about to try and Flashtool it, so I hope that's the right way to go
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After flashing the .ftf you can also use flashtool to relock your BL.
If you're in EU, you can send your device to service center even if you previously unlocked the BL.
According to European Union law, Sony has to prove that your problem occured as a result of the unlocked BL..
And even if you're not in EU, just try and send it in. Depending on the problem, they often don't check BL and DRM status..

CokeJunkee said:
After flashing the .ftf you can also use flashtool to relock your BL.
If you're in EU, you can send your device to service center even if you previously unlocked the BL.
According to European Union law, Sony has to prove that your problem occured as a result of the unlocked BL..
And even if you're not in EU, just try and send it in. Depending on the problem, they often don't check BL and DRM status..
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MY PHONE IS FIXED! It took a couple of weeks, but the repair centre did a great job.
My phone is working and I love my ZL again. Thank you Sony repair!