yashsingh1/xdaforums huggingface dataset:
[Sony Xperia S, Acro S, Ion] Spectre51:
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://xdaforums.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
[Sony Xperia S, Acro S, Ion] Auggy99:
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.
[Sony Xperia S, Acro S, Ion] Spectre51:
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.
[Sony Xperia S, Acro S, Ion] Bach415:
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.
[Sony Xperia S, Acro S, Ion] dogsly:
You can unlock bootloader on the LT28i and, accordingly, there is a file to be relock bootloader LT28i
[Sony Xperia S, Acro S, Ion] Bach415:
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.
[Sony Xperia S, Acro S, Ion] justdrew:
see if it works
[Sony Xperia S, Acro S, Ion] Spectre51:
Has anyone with an ion that has

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.
[Sony Xperia S, Acro S, Ion] SMN23:
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.
[Sony Xperia S, Acro S, Ion] Spectre51:
Flashing firmwares does not change the ability to unlock the bootloader.
[Sony Xperia S, Acro S, Ion] SMN23:
Kinda figured that
[Sony Xperia S, Acro S, Ion] athris:
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.
[Sony Xperia S, Acro S, Ion] Assyle:
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 :)
[Sony Xperia S, Acro S, Ion] Spectre51:
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.
[Sony Xperia S, Acro S, Ion] Assyle:
ok. thanx :)

probably wait for Xperia acro S... probably will be sold in europe in nearest future. :)
[Sony Xperia S, Acro S, Ion] miahdog:
Drivers aren't working for my device. The alternative drivers link isn't working. Can someone please upload the alternative drivers. Thank you.:good:
[Sony Xperia S, Acro S, Ion] apkraven:
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.
[Sony Xperia S, Acro S, Ion] Deleted member 1483200:
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
[Sony Xperia S, Acro S, Ion] Spectre51:
Read this thread: http://xdaforums.com/showthread.php?t=1761578
[Sony Xperia S, Acro S, Ion] kirbee213:
Service menu

The service menu refuses to open for me. Just sits there until you press send and then it try to place a call.

UPDATE:

Not sure why, but it started working. I rooted, installed CWM, it still didn't work. Tried the *#*#4636#*#* and that opened fine finally. Closed it and tried *#*#7378423#*#* and it opened just fine, only to find out that the damn bootloader is locked. =(
[Sony Xperia S, Acro S, Ion] tejasvi1:
the fastboot with usb package link in not working can any one provide me a working link
[Sony Xperia S, Acro S, Ion] Captain Droid:
fastboot package with usb drivers link not working :(

404 Error

Please upload the files again in Devhost or Mediafire.

Thankyou
[Sony Xperia S, Acro S, Ion] Nishant0001:
link is not working
[Sony Xperia S, Acro S, Ion] TesseractE:
I just finished a chat with AT&T Customer Service... Thought that since the Ion had recently gone on Sony's 'unsupported' list that I might be able to talk them into an Unlocked Bootloader. The lady I spoke with seemed to think I was asking her for information on how to 'Jailbreak' my phone.

It's already rooted and I'm running the lt28h firmware with the lt28at baseband so I can get LTE and JB... But I'm looking at these KitKat builds of CM and I want.

Does anyone have any suggestions for how I should talk to Customer Service about this? I can't help but think that I wasn't adequately getting the difference between rooting and unlocking the bootloader across to the lady I was speaking with. :confused:
[Sony Xperia S, Acro S, Ion] postx:
Hi, great to hear that someone is trying to talk with AT&T about this issue...

Maybe you should first try to open a chat with support and tell them to have a look at http://unlockbootloader.sonymobile.com

Also explain that you don't want to hack the phone etc., you only want to have the latest android update from Sony which AT&T doesn't provide...So basicly you want to have the same possibilties as with an unbranded phone.
[Sony Xperia S, Acro S, Ion] TesseractE:
This actually isn't my first attempt... I talked to a guy at a nearby AT&T store, and he at least seemed to realise what I was getting at. He said that the Stores have been directed not to assist with this, though.

I might try a Chat support call later on, to see if that'd help. Thanks for the suggestion!
[Sony Xperia S, Acro S, Ion] postx:
Great :good:

Good luck :fingers-crossed:
[Sony Xperia S, Acro S, Ion] TesseractE:
Just had a great conversation with a guy over the AT&T Chat tool. He couldn't help me out directly, but he put in a ticket with one of their Tier 2 specialists to contact me back. Plus he didn't make me feel like I was asking him to do something illegal like the lady I got at the phone call center. :P

I'm with you on the crossed fingers. Here's hoping!
[Sony Xperia S, Acro S, Ion] zackspeed:
Best of luck but telling you know it will not happen. The Xperia Play for ATT is still locked down so do not see the Ion getting it either. What bothers me is how Sony and ATT keep pointing the finger at each other.
[Sony Xperia S, Acro S, Ion] TesseractE:
Yeah... One of the things I mentioned to the rep is that if this isn't something AT&T can do on its own, it might be something AT&T and Sony need to hash out - which actually seems more likely. Not sure of all of the Politics of it, but my guess is that Sony's done the locking at AT&T's request and that Sony COULD unlock these phones if they wanted to, but they need to be requested to allow it by AT&T.

I still haven't heard back from the Specialist, but I'm still in the 3-5 business day timeframe given for a return reply so I'm just going to be patient about it for now.
[Sony Xperia S, Acro S, Ion] zackspeed:
Yes Sony does have the ability. Back when I got my Ion a little over a year ago someone found a server that could do the unlock and a few LT28at models where unlocked. Could not have been more then a dozen devices though and the server has been offline ever since.
[Sony Xperia S, Acro S, Ion] postx:
Any reply from ATT?
[Sony Xperia S, Acro S, Ion] TesseractE:
Yeah, same story. There was no luck on AT&T's end. I went to Sony, and the Customer Service folks couldn't do anything about it. The Sony Dev site mentions posting on StackOverflow, so I posted there, but there's not been an answer yet.
[Sony Xperia S, Acro S, Ion] chickee:
Please pardon me if I am asking a stupid question since i am new too all rooting/unlocking/flashing concepts.

Last night I unlocked my bootloader, flashed a new kernel and also a new rom and am running KitKat now :cool:

However, I want to ask, when I flashed this new kernel (boot.img), does it mean that the stock bootloader has been replaced with this new kernel? I am seeing the TWRP (please pardon spelling if i remembered wrongly) if i hold the volume up key during boot. Does it mean my bootloader will stick forever until i flash another kernel into my phone?

Also this TWRP has all sort of wiping functions, this feels to me like Windows XP old recovery mode where I can perform minimal but useful operations on drives/files/disks. Can I say this Kernel shares the same concept with this XP recovery mode?

Lastly, this new kernel, is it not stored in the android file system? Just like windows, the booting files are not in C:/ afaik.

Ok, thanks a lot for all these development. I sincerely thank you for all your effort (since I am also a developer, in webapps though) because I know how hard it is! :good:
[Sony Xperia S, Acro S, Ion] kenmao:
can u sent the link of the fastboot driver? the link on the first post is not working.. thank you
[Sony Xperia S, Acro S, Ion] chickee:
Try to download the flashtool in other posts, you will have the driver inside :cowboy:
[Sony Xperia S, Acro S, Ion] kenmao:
i have the flashtool, but i only get Flashtool-drivers inside
[Sony Xperia S, Acro S, Ion] jgalvez21:
please explain how, AT&T version doesnt work
[Sony Xperia S, Acro S, Ion] Spectre51:
He didn't have a LT28at if he was able to unlock the boot loader.

Sent from my Sony Xperia™ Z1
[Sony Xperia S, Acro S, Ion] chickee:
You are right, mine is bootloader unlockable.
[Sony Xperia S, Acro S, Ion] xbtz:
May I unlock Bootloader by flashtool instead of ADB way?
[Sony Xperia S, Acro S, Ion] kausar003:
I had followed the whole process of unlocking the bootloader but at the end when I switch on my xperia ion then it rebooted many times and after that it gets switched off and after that it not taking charge also plss help meto get me phone on plsss help me..
[Sony Xperia S, Acro S, Ion] ianpan24:
Hello,

at http://developer.sonymobile.com/unlockbootloader/ i go to the bottom where it says "select your device" but i dont see xperia ion in their drop down list. I cant unlock my mobile's bootloader any more or i m doing something wrong?

Thanx in advance.
[Sony Xperia S, Acro S, Ion] ceriqdesign:
there are xperia ion in the list..please check it back

https://developer.sony.com/develop/open-devices/get-started/unlock-bootloader/
[Sony Xperia S, Acro S, Ion] ganeshbiyer:
@Spectre51

I successfully unlocked the Bootloader. Thanks for the info.

I downloaded the Flash Tool, I did twice for windows from both the sites. But when I click on it to install, it gives me installer integrity check failed message.

Is their an alternate download location.
[Sony Xperia S, Acro S, Ion] ganeshbiyer:
Anyone tried this for unlocking boot loader

http://xdaforums.com/showthread.php?t=1794800

Download link:

LINK1

LINK2
[Sony Xperia S, Acro S, Ion] popfan:
This looks like it will work for LT28i's and LT28h's but because the bootloader is locked on the LT28at, I don't think it will work.
[Sony Xperia S, Acro S, Ion] ganeshbiyer:
Hope the official ICS update makes the bootloader unlockable. This happened with locked bootloaders for ARC.:fingers-crossed:
[Sony Xperia S, Acro S, Ion] NeoJeo:
Hello all, thanks Spectre51 for the tutorial !

I'm gonna make a tutorial on a forum, so I have some questions. Except be able to do OTA updates safely, what are the benefits on relocking the bootloader ?

When unlocking the bootloader, do apps like TrackID stop working as on 2011 xperia devices ?

@ ganeshbiyer: did you succeed relocking your BL ?

Thanks.
[Sony Xperia S, Acro S, Ion] Spectre51:
TrackID should still work. If you send your ion in for repair the bootloader needs to be locked or they will refuse service.
[Sony Xperia S, Acro S, Ion] NeoJeo:
Ok Thanks. Anyway DRM keys are lost as soon as bootloader is unlocked, and cannot be recovered. So even if some service centers don't check DRM keys, others won't accept the phone if it's re-locked. Some employees don't even know what a bootloader is lol.
[Sony Xperia S, Acro S, Ion] thanitos:
Can't get the damn thing to go into fast boot.....
[Sony Xperia S, Acro S, Ion] popfan:
Yep, Bootloaders will do that to you.
[Sony Xperia S, Acro S, Ion] ganeshbiyer:
I haven't tried yet.;)
[Sony Xperia S, Acro S, Ion] killerskincanoe:
So no one with a lt28at has successfully unlocked their bootloader yet correct?
[Sony Xperia S, Acro S, Ion] popfan:
No, a few people have had their bootloader unlocked. Those are the ones with the sim unlock also. Right now the S1 server that unlocks our phone is not working.
[Sony Xperia S, Acro S, Ion] ksmurfcta:
disregard... I posted but deleted it...
[Sony Xperia S, Acro S, Ion] chocolate_bahz:
Thanks! :good: I thought my phone is dead!

I have just updated to ICS using PCC ;) I did a factory reset in settings menu ,then my phone stuck in XPERIA screen :confused:

Power & Vol+ solved the problem :cool:

I unlocked the bootloader and flashed kernel for rooting my Ion before

PCC don't allow to update to ICS when bootloader is unlocked

and I can't flash the stock rom nor the ICS .ftf using the flashtool

It gives error and reboot my phone into charge mode
[Sony Xperia S, Acro S, Ion] bayhas1:
Has anyone else been successful at relocking without needing to flash stock ftf? I am trying to relock the BL to get ICS via SUS, but I am trying to avoid a factory reset/losing user settings and data
[Sony Xperia S, Acro S, Ion] NeoJeo:
Flashing a kernel doesn't lose your data ;)
[Sony Xperia S, Acro S, Ion] seneka100:
Tested and OK !!!! Thank you,good work.

---------- Post added at 09:45 PM ---------- Previous post was at 09:34 PM ----------

Yes,BL successful relocking without flashing stock ftf.....have flashed back from ICS to Gingerbread because of the flashplayer and now relocked the BL,without problems.....have a nice Oktoberfest !!!
[Sony Xperia S, Acro S, Ion] recoscp:
IMEI whit 15 numbers

Hello, I am whit a deficulti wen I try to get the code from "http://unlockbootloader.sonymobile.com", there is the next message "The IMEI must be exactly 14 chars long." my expiria s lt28i have 15 numbers...it is a problem or I have a way to resolve that. Tanks brothers!

Best regards from Portugal!:eek:
[Sony Xperia S, Acro S, Ion] Toledo_JAB:
Don't use the last digit
[Sony Xperia S, Acro S, Ion] split2th:
I have an lt28i, but it's been rogers branded and the service menu tells me the bootloader is not unlockable. Can i flash the stock lt28i and then do the unlock?
[Sony Xperia S, Acro S, Ion] jeriku:
Flashing firmware has nothing to do with unlocking. You need a service to change your bootloader to unlockable. Then you can use the. Sony unlock procedure.
[Sony Xperia S, Acro S, Ion] Toledo_JAB:
No.

Yes, you can flash lt28i and all stock Sony firmwares but that will NOT unlock the bootloader.

~Jaramie

from my LT28at ION rooted, customized & eating an Ice Cream Sandwich :D
[Sony Xperia S, Acro S, Ion] tribalartgod:
So I've been doing some research on the S1 Boot driver, or whatever it's actually called for fastboot drivers on the PC for our phones... I am unable to test this myself, as I am at work at the moment...

But, for those of us with the LT28at, I'm wondering if this method would work to allow us to actually install the fastboot driver:

http://support.microsoft.com/kb/315539

Can someone who is pretty computer savvy test this out, and see if in fact this will show up after this workaround and allow the fastboot drivers to be installed? If so, we "might" be able to go ahead and proceed with the bootloader unlocking method provided by Sony.

(I am NOT trying to get anyone's hopes up, but "if" this method would show the S1 drivers... Maybe a long shot...but still worth it to at least try I think..)

Note: "If" this method will allow us to install the drivers properly, despite the device not being plugged in, you WILL HAVE TO try to boot into fastboot with failure for it to register, before trying the above method. Again, I would try this myself, but I'm at work for about another 9 hours today.
[Sony Xperia S, Acro S, Ion] Toledo_JAB:
I have just tried this, but it looks like I have adb drivers already. In dev manager I have 'Sony sa0103 adb interface driver'. Are the adb and s1 boot drivers the same? I thought the phone blocked fastboot, not the pc.

I have been reading up on using adb to push an unlocked boot partition from lt28i to the LT28at, but am not sure on block sizes. Would an ION-i partition work on the ION-at?

~Jaramie

from my LT28at ION rooted, customized & eating an Ice Cream Sandwich ;)
[Sony Xperia S, Acro S, Ion] thanitos:
I got my phone to "hardbrick" I got it into what I think is called QHsusb_dload mode? I don't recall but what I did was hold the Volume up and down buttons and it boots but it wont boot fully but the pc sees it.

It kept installing some software when it booted by holding down those two buttons so I made windows not install software, deleted the software then it gave me that QHsusb_dload in my Device manager
[Sony Xperia S, Acro S, Ion] Toledo_JAB:
fastboot driver name

can someone that unlocked their bootloader please give the name of the driver that is listed by windows device manager when connected in fastboot mode? also how about uploading it here so we can try to install it for lt28at.
[Sony Xperia S, Acro S, Ion] tribalartgod:
I believe these drivers are different from one another. I tried to load my phone in fastboot mode while watching device managers list. I DO in fact see the S1 option appear, but its literally for about 2-10ths of a second. Not fast enough to click it and update drivers. I'm hoping that the phone is not the device blocking it. I'm hoping that once the correct drivers are installed, the phone will stay in this mode. At the moment, it kicks out and goes into charge status.

I'll be testing this method anyways myself on my Win7 machine, just to see... thanks for trying it out. :)
[Sony Xperia S, Acro S, Ion] thanitos:
I guess the qhsusb is Qualcomm high-speed USB
[Sony Xperia S, Acro S, Ion] tribalartgod:
Ok...So I tried the work around that I mentioned a few posts back. It unfortunately, did not work for me. So I have one final idea, but it requires someone who is able to access fastboot to perform it.

You will need:

THIS program: http://www.blueproject.ro/systracer/download

Patience

Expert status on a PC

1st, Uninstall your S1 Boot driver for fastboot. Then restart your PC

2nd, Install Systracer - This program will monitor all registry changes, and various file install locations on your PC (Don't worry, you can remove it after this process is over. Use the portable version if you prefer)

3rd, Reboot your phone into fastboot mode, and reinstall the driver(s)

4th, Once this process is done, check systracer for all the file entries and registry changes.

5th, Here's where the expert level comes in... Locate all of the files that systracer listed during this process, note their install locations. Also, go into your registry and export the keys that have either been added or changed. (Doing this in the registry itself will ensure the keys are correct and intact)

6th, Post all that stuff here, so we can 100% manually install these drivers and try it

NOTE: It is extremely important that you also include the exact OS you are using (i.e. Windows XP SP3 or Win7 Ultimate 64bit)

NOTE 2: This method is an extreme shot in the dark...But its all I got left up my sleeve. Keep your fingers crossed :D
[Sony Xperia S, Acro S, Ion] noobsquared:
Has anyone seen this error rooting their LT28i?

\LT28\fastboot>fastboot.exe -i 0x0fce getvar vers

ion

version: 0.5

finished. total time: 0.004s

\LT28\fastboot>fastboot.exe -i 0x0fce oem unlock

0xDE63A45563709376

...

(bootloader) Unlock phone requested

FAILED (remote: oem unlock failed!)

finished. total time: 0.114s
[Sony Xperia S, Acro S, Ion] enrique71:
WHAT THE HELL ? I just tried to unlock my L28i and I also got the same key from the Sony unlock site, DE63A45563709376 !!!

It failed for me too :rolleyes:
[Sony Xperia S, Acro S, Ion] thanitos:
Has anyone else noticed, with gb on the att ion we could kinda get fastboot but got kicked out right away but now with ics I dont even get the green light I go right into booting, I haven't tried this on a different pc to see if it's just a driver item or not.
[Sony Xperia S, Acro S, Ion] ganeshbiyer:
Any one checked this post

*Exploit* To unlock locked bootloader that have "Boot Unlock Allowed=No"

http://xdaforums.com/showthread.php?p=33081305#post33081305
[Sony Xperia S, Acro S, Ion] Spectre51:
Interesting. Doubt its that easy but would be nice if it worked.
[Sony Xperia S, Acro S, Ion] ganeshbiyer:
And risky too, with results not guaranteed.
[Sony Xperia S, Acro S, Ion] thanitos:
I'll test it after class in about 2 hours and report back
[Sony Xperia S, Acro S, Ion] enrique71:
BUMP - Has anyone successfully unlocked the bootloader on LT28i ?
[Sony Xperia S, Acro S, Ion] thanitos:
Well on the ATT version I'm bricked doing this, I think though that my battery was too low while I was doing it and it just died after it finished, waiting for it to reach minimal charge again to see.

The first time it didn't take when I flashed the modded TA and when I did a redump it was set back to 0. So i tried instead of unplugging the phone and plugging it back in just flashing the modded TA right after I made it, may be a bad idea.

Pretty sure this will most likely hard brick our phones so I don't, as of yet, recommend it.
[Sony Xperia S, Acro S, Ion] jeriku:
Yes several on the original thread had asked for it to be closed.

CORRECTION :

Looks like the thread has been closed.

Sent from my LT28 w MIUI
[Sony Xperia S, Acro S, Ion] thanitos:
Yeah my phones hard bricked :(
[Sony Xperia S, Acro S, Ion] jeriku:
Your dang adventurous spirit!

Sent from my LT28 w MIUI