yashsingh1/xdaforums huggingface dataset:
[Sony Xperia T, TL, TX, V] .coomb.:
What research? It isn't my fault if the shop sold it to me with a locked bootloader...
[Sony Xperia T, TL, TX, V] gregbradley:
lol...why didnt you ask them before you bought it? You said you wanted to put cm 10 on it and then a 2 minute google search will tell you that you needed a unlocked bootloader and that not all xperia T's come with the ability to unlock them. When i spent £300 on a phone i made sure it was what i wanted.
[Sony Xperia T, TL, TX, V] Galcactus:
Let's not start arguing. I personally had no choice when getting my T since it was an exclusive at the time and they only had the skyfall variants, so it was going to come with a not unlockable bootloader. I'm not alone in this, which is why i started this thread in the hope we could do something about it. Now, i don't have a working computer at the moment but i've got an "ingenious" (read, stupid) idea: I saw in the unlock tool for x10 a description of what is done with the tool. So I figure we could find precisely where this value is set since only two areas are changed (I can't remember the exact names now) (assuming a similar code structure between the two phones since the x10 is the grandfather of this one (I used to have the x10) and Sony should have kept a similar set up and hierarchy in code). Now the tough part is the by pass which I have no idea about, since Sony patch their security with every revision of updates, so all I can think of is roll back to 303 (the one before 195), root, and then go from there somehow. Chances are some adb command could do it. If not then extract the boot.img from a firmware and create an ftf from that. Then get the modified boot.img and replace the existing one with the new one. Tada? It's probably going to fail but if anyone with a working computer can go into the x10 forums, download setool1, read the information and then try and apply it to the t then we might get somewhere. I appreciate constructive criticism, so comment with ideas to get this to work! Chill guys, keep with the xda spirit!

Peace :)
[Sony Xperia T, TL, TX, V] gregbradley:
Apart from the official Sony way there is no way to unlock the boot loader on 303 firmware so downgrading is not an option.

I am not here to argue., these are the facts. If it says no, then you can not unlock.

And I will believe that until the_laser says otherwise

Sent from my LT30p xda premium app.

How do I customise the signature on xda premium app?
[Sony Xperia T, TL, TX, V] .coomb.:
The point is that I bought it in an online shop, which stated it was unbranded, so I presumed also unlockable...

Well it turned out to come with some Vodafone apps preinstalled and also with a non unlockable bootloader. I didn't want to send it back because I would pay the sending costs and didn't have enough money, furthermore here in Italy the postal system is a bit of a mess, so I decided to keep the product as it was, I didn't have very much to do, unfortunately :crying:
[Sony Xperia T, TL, TX, V] Galcactus:
Can everybody please do something? In the service menu, under software info there's the s1 boot version. Could you all post what your versions are and if you can unlock the bootloader or not. Just curious, mine's 1255-9860 R10A121 and(obviously) I can't unlock. Thanks!
[Sony Xperia T, TL, TX, V] :
same as yours, came with .195 software, nothing to do with unlock (I can obviously unlock).
[Sony Xperia T, TL, TX, V] Galcactus:
Okay, that's another theory out of the window. Oh well, onto the next!
[Sony Xperia T, TL, TX, V] HackitZ:
Just want to share some info with you guys.

I also have an Xperia S, it also has an unlock able boot loader. until now there is no solution. So don't expect anything soon if ever.

Now with that being said, the last time the S1 server was online you could have paid (60euros) to have your bootloader changed to un locked. here's the real kicker the last time it was online it was only online for 2 days and before that it was a year before it was online.

Do a search in the xperia S forum and search my name if you want more info, i have a link to a site that can do it when the server is online. Just remember you almost need to check if the server is online everyday, miss 3 days in a row and your going to be waiting again.

So if your xperia phone has an unlock able boot loader just have fun with stock roms and playing with the init scripts to see if any of the tweaks can make it better.

I use to unlock SE phones back in the day when the top SE phone was the T68i. I still have my cruiser dongle, but when the whole scene went to buying credits I kinda walked away and moved on. Wish I didn't as I would be more in the loop now. Oh Well.

Just my 2 cents.
[Sony Xperia T, TL, TX, V] .coomb.:
We'll see about this after a few months. Not necessarily saying things are going to be positive.
[Sony Xperia T, TL, TX, V] Galcactus:
Thanks for that, not exactly good news though. I'll try and keep an eye on the s1 server. Though I have to ask, with the x10 they used to think that you couldn't unlock the bootloader, but then they found the tools to do it, no? I've been checking out the forums of the other tool that you mentioned, I think I'll try it out soon.
[Sony Xperia T, TL, TX, V] crabnebula:
This is probably a dumb question (coming from a newbie), but when using the TA Editor within flashtool, I can see a setting that seems to be related to the bootloader unlockable status (see attached capture). What happens if you modify this? I assume that the bootloader verifies the checksum and will not boot, but is that the case?

Also, can someone explain exactly what the simlock.ta file within certain ftfs is? I'm comparing two ftfs for my LT30a and one has this file whereas the other doesn't.

Thanks
[Sony Xperia T, TL, TX, V] schaggo:
Well, contract not fulfilled. Send it back, signed with DHL or similar, which is not part of the italian postal system. Reclaim your money due to not fulfullment of the contract. The whole yadda yadda about not enough money to do that and stuff is moot: you buy a phone for 450 bucks and dont have the 10 bucks to send it back and actually claim that money from the shop as well...?

Btw, Switzerland, totally unbranded, unlockable, EUR 399.-- as per right now, I just checked it. And as said: clean and unlockable. You got ripped off, my friend, as branded means the phone is in some way subsidised and the shop got it for cheap originally.

Gesendet von meinem Xperia T mit Tapatalk 2
[Sony Xperia T, TL, TX, V] Galcactus:
Excellent find! Regarding your questions about the checksums you're probably right, though then what you could do is get the check sum for the modified version, get the plain text and over write the one it's checked by in the boot loader. This would take some time to find and there may be other values affected by this, so be careful. Go ahead and test this if you want, do it at your peril and if stuck use pc companion to repair. Regarding the simlock.ta I've seen a few forums where flashing only that (and nothing else) creates problems with emergency calls only. Some have it, others don't. Perhaps a more enlightened person can tell us what it is? I'd hazard a guess at it relating to what it says on the tin!

Great stuff, keep it up!
[Sony Xperia T, TL, TX, V] crabnebula:
I don't actually know in which file this data is stored, so I have no idea what data might be the subject of a checksum, and I have no idea where such a checksum might be stored, plus it is likely encrypted... But I'm sure someone else can chime in -- I highly doubt that I've discovered anything new.

Can someone explain what data the TA Editor in flashtool accesses?

What happens if we edit this data? Is it checked for integrity at startup??
[Sony Xperia T, TL, TX, V] dsurka:
Hi, sorry for the intrusion but is this issue only on the LT30p or is also in the LT29i? I read somewhere LT30at (AT&T version) is locked as hell, but that would be no surprise.
[Sony Xperia T, TL, TX, V] Galcactus:
With checksums, last time I checked (pun intended) md5 checksums were used. Regarding the encryption of the checksum the way it is done is that the plain text of the sum is stored in a location and then for the new file the sum is calculated and if they match then it's a go. Where it'd be stored? No idea. what it's calculated from? Haven't a clue.
[Sony Xperia T, TL, TX, V] Entropy512:
All Xperia TLs on AT&T are NOT unlockable.

The difference (other than that Settings display) is not in the device, the difference is (I am fairly certain) on Sony's servers which have a list of IMEIs that are unlockable and ones that are not. That's why this "S1 signature server" can unlock non-unlockable devices - the server has its own implementation of whatever algorithm the official servers use, but doesn't check any whitelist.

As I understand it, some devices, after they are old enough, are turned "on" in Sony's servers even if the UI says unlock not allowed.
[Sony Xperia T, TL, TX, V] Spectre51:
Depends on where you get your phone. If you buy a carrier branded phone more than likely it will be locked. LT30p LT29i whatever it is. If you buy an unlocked unbranded device you should be able to unlock the bootloader.
[Sony Xperia T, TL, TX, V] Galcactus:
Once i get my new super computer I'll start digging around myself too! Where can i get that ta programme that was being used to find the values?
[Sony Xperia T, TL, TX, V] Galcactus:
Right, my new computer has arrived, the holidays are nearly upon us... time to get to work! What was the programme that was used to find the values a few posts back? Something like Ta editor? Where can I find it?
[Sony Xperia T, TL, TX, V] datagubben:
Can we change IMEI number somehow and thereby get the server to recognize the phone as unlockable?

Skickat från min LT25i via Tapatalk 2
[Sony Xperia T, TL, TX, V] .coomb.:
I suppose you were referring to the above quote. ;)
[Sony Xperia T, TL, TX, V] matt4321:
presumably if you enter one that's on the server and has already been unlocked it will be marked as unlocked and therefore won't unlock again
[Sony Xperia T, TL, TX, V] .coomb.:
As per my previous post with quoting, TA Editor seems to be a part of flashtool.

I would also like to note that I submitted my IMEI to the Sony bootloader unlock program and got an unlocking code back, so it is unlikely to be a server related issue. I think we have to operate on our phones.
[Sony Xperia T, TL, TX, V] anthony xperia t:
wow you sound absolutely sure when you say NO , there's always a way to re program something
[Sony Xperia T, TL, TX, V] gregbradley:
I give my answers on current state of affairs. Currently there is NO way to unlock the bootloader if the bootloader unlock allowed=no.

There are no hacks, no downloads, no software, no hardware tricks that can be used that are free and on this site.

You may be able to use SEtools if you can find anyone with access to that server (Unlikely) or you MAY be able to use other paid for services.

Apart from that I have read nothing that gives me hope to a way around this so far. That does not mean it will always be impossible, but currently it is IMPOSSIBLE!

That is why I am quite certain my answer of no is correct.
[Sony Xperia T, TL, TX, V] Galcactus:
We can only hope and try...
[Sony Xperia T, TL, TX, V] cpumaster:
There is one way and i am trying it now. And that is to convince the carrier to remove the lock they put in.

I have come so far in the case that i have convinced the tech personal of my carrier but they have to get a clearance from their boss to do it.

I'm crossing all my fingers and toes. Hope to get the answer by tomorrow. I will tell you how it went so others know if it is possible to convince your carrier to do it.

The only downside of removing that lock is that your warranty expires they told me. But it does that anyway as soon as i unlock the bootloader so who cares... ;)
[Sony Xperia T, TL, TX, V] gregbradley:
I have mentioned that method before, but its not a "hack"

It is definately worth a try as many people have said it works..
[Sony Xperia T, TL, TX, V] cpumaster:
No it's deferentially not a hack. It's more like the way it should be...

The excuse my carrier had for locking the phone was "it works better with our apps". LOL

It's more like an insurance that the users don't uninstall them cos they are almost always useless...
[Sony Xperia T, TL, TX, V] Galcactus:
I've been hunting around a little and here's what I've got so far: Sony check the imei so even if we could change the status Sony would still not issue the unlock code. Therefore I think we would need to find a way to do it without Sony. Changing the Imei is illegal so that's it if the question. I stumbled across something on the galaxy forums that they've managed to place a boot loader on an sd card and boot from that. Could that be possible for us? We'd have to change the boot from sequence, which I'm guessing resides in the boot sector? Could somebody with an unlocked bootloader send me a complete copy of their system files please? I don't just mean what they'd flash like a rom or their firmware, I mean the entire thing with all the various system files, the kernel, the boot sector the whole lot. Or a link will do. Any advice/ideas would be appreciated!
[Sony Xperia T, TL, TX, V] .coomb.:
Still seems strange to me as I requested an unlock code for my device which is not unlockable and I got an unlock code back for my specific IMEI...
[Sony Xperia T, TL, TX, V] Galcactus:
Have you tried to unlock? Did it work?

Update:

I can confirm that Sony will send out unlock codes as I got mine!
[Sony Xperia T, TL, TX, V] matt4321:
Wait so even if it says no, we just unlock the bootloader via the sony website like everyone else?

---------- Post added at 07:43 PM ---------- Previous post was at 07:09 PM ----------

I can't seem to even get mine into bootloader, unless I'm being an idiot
[Sony Xperia T, TL, TX, V] .coomb.:
No guys, unfortunately I have tried the procedure and my phone does not boot into fasboot, so I cannot unlock it.

I just wanted to point out that we do not depend on some kind of IMEI check or anything else to unlock our phones.

But you can get the unlock code if you submit your IMEI to Sony on their bootloader unlock page. That's as far as you can get for the time being...
[Sony Xperia T, TL, TX, V] Galcactus:
What files are associated with s1boot and where is it stored?

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia T, TL, TX, V] .coomb.:
I don't know, honestly, but you can take a look here: http://xdaforums.com/showthread.php?t=1981988

I'm quite new to the Xperia scene, you know...

I suggest you take contact with either Doomlord, Bin4ry or one of the few other Xperia devs around here to get some clarification. Maybe some guys of the freexperia time can help you out.
[Sony Xperia T, TL, TX, V] Galcactus:
That's what prompted me to ask, but thanks anyway!

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia T, TL, TX, V] .coomb.:
Have you managed to find out something by messing around with the TA editor in flashtool?
[Sony Xperia T, TL, TX, V] Galcactus:
Not yet, so far I've not had the chance to get that far. I've (hopelessly) looked through a firmware file and found several boot related files, but nothing to do with the boot loader. I've also done a lot of research into the structure of android, how it boots and that kind of stuff. However I've not seen much mention of boot loader locks... it'd be nice if I actually knew what the lock does. I'm assuming it prevents any changes to it so the fast boot remains false. What I've found to be a possible solution is either creating an alternate boot loader on an sd card which takes precedence over the already functional one or finding where the rooting status is set and modifying that. I had a few other brain waves but nothing important obviously. My logic is that if Sony provides the unlock code it can't be white listed, it must be the device itself. Which is why I want to compare two s1boot files from unlock/lock and see the differences, to see if that brings up anything. I've also like to use the ta editor but unfortunately haven't had the chance yet. With the ta editor if we find the string which sets it, find its location, change the value, save it, create the checksum for it and set that checksum as the string for what it's checked against when flashing, then flash it. Sound simple? :p But I'm not all that optimistic about it, so any suggestions are helpful. I'll try and get in touch with my carrier about this, or try and get a device that doesn't have this limitation. I'd also like feedback on what you all think of these, I'd they're mad ideas or not!

Thanks a lot!

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia T, TL, TX, V] .coomb.:
Okay, so after 10 minutes of thinking, here's my proposal:

When entering *#*#7378423#*#* in the dialer we enter an application called service menu, where we are able to check our bootloader status, right?

Now to the idea: this application is located in /system/app and it's called ServiceMenu.apk. To read our bootloader status, the application has to check for it somewhere in our phone, which probably is where we need to operate. I think that if we dig in the code of ServiceMenu.apk we will eventually find out where the application reads the bootloader status from and from there we can start working.

We should get as many people as possible looking for some trace of the bootloader status location in the ServiceMenu.apk code. You should require some basic knowledge as well as a compatible version of APKtool.

Happy searching!
[Sony Xperia T, TL, TX, V] matt4321:
Yeah I couldn't get into bootloader using the buttons. I have an unlock key though, surely this indicates sony doesn't mind the unlock. it's the carriers preventing it?

Had a brain wave to use 'adb reboot bootloader' but unfortunately that produces a normal reboot
[Sony Xperia T, TL, TX, V] cartmenicus:
I dont think sony minds having boot loaders unlocked.. they have it right on there website :p Its iur goddamn carriers locking it from us! I asked my carrier they told me i had to be completely out of term and pay them 50$ THATS BULL**** im thinking if we can find the line where our carriers changed it which shouldnt be all that hard with the time and people we can defeat them! I dont know how it was done but i contacted the supposed maker of the x10 bootloader unlock maxrfon and asked if he can look into the T and the V he said he would... so soon we might have one!
[Sony Xperia T, TL, TX, V] matt4321:
That'd be cool, we need an unlock round here
[Sony Xperia T, TL, TX, V] hispasat:
Where do I apply for unlock code, please point me to the web site.

Thanks
[Sony Xperia T, TL, TX, V] matt4321:
http://unlockbootloader.sonymobile.com/
[Sony Xperia T, TL, TX, V] Galcactus:
Just to clarify, even if Sony send the code

You can't unlock your boot loader! As for the others, great ideas! Let's get cracking and collaborate! If someone finds out where the path is read from in the apk then we'll get going from there!

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia T, TL, TX, V] matt4321:
Since I'm not rooted on the later firmware does a rooted person on the older firmware/rooted and ota'd to newer firmware want to upload the apk so I can decompile and look too. to much hassle to .ftf to older firmware and root, i use this as my primary phone so it needs to be on
[Sony Xperia T, TL, TX, V] Galcactus:
I'm not rooted and am on older firmware, but I have the apk (just use astro file manager) if you need it? Also I found a SIM lock apk... anybody else have that?

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia T, TL, TX, V] .coomb.:
I have the SIM unlock app too, the icon is a SIM card with 0's and 1's... but I removed it from /system/app, I couldn't really see the utility of it... What version of ServiceMenu.apk do you need? I have the one from .303, .195 and .223. You tell me.
[Sony Xperia T, TL, TX, V] matt4321:
I have the apk now. Sorry, I didn't realise you could grab a system app without root. I've only ever had root so don't know entirely where the limitations lie. I've got work today and have a poker night tonight but I have the day off tomorrow so will do some delving and see what I can find. Its the .195 one I have
[Sony Xperia T, TL, TX, V] Arteni:
Hello guys, i'm absolutely not new in the xda developper world, but I just come to create an XDA acc. I follow this thread since she was created. I've also a bootloader : no.

If I can help you : There is no problem !:)
[Sony Xperia T, TL, TX, V] hispasat:
I got my Xperia T unlocked by provider as I paid for factory unlock. I was hoping to see my bootloader unlocked too,but still same thiing " Bootloader Unlock: NO"

Should i factory reset the phone to find out bootloader state
[Sony Xperia T, TL, TX, V] .coomb.:
Trying does not hurt, but I see little chances of the phone getting unlocked after a factory reset.
[Sony Xperia T, TL, TX, V] hispasat:
I did hard reset, checked 2 different providers and it works fine, but still shows " Bootloader Unlock: NO"

Service Info - SIM lock

Network 0

Network subnet 0

service peovider 0

Corporate 0

SIM 0

Before sim unlock, network value was 5

Called tech support and got confirm that bootloader should be unlocked :rolleyes: Maybe I was provided a wrong code
[Sony Xperia T, TL, TX, V] kjwaugh:
Sim unlock is not the same as bootloader unlock

They are not the same thing, I believe that what most carriers will provide is a SIM unlock only, the Bootloader unlock is not as simple.
[Sony Xperia T, TL, TX, V] Arteni:
I think the only thing to do (without change IMEI, etc...) is to have a complete save of an Xperia T (with a debranded bootloader) and put this save into our XT.

The problem is : How can we totally destroy the data in our phone and put the entire save. We need to test it, but we need some people who have an unlocked bootloader and a CWM to Hard Reset. I think people won't coming in the thread and we have to open a new thread in Original Android Developpment or General, for find some of them.
[Sony Xperia T, TL, TX, V] hispasat:
Bootloader is locked by carrier in order to prevent sim unlock.

I dont think it could be hard for 'em to enable it

Someone please open a new thread in Original Android Development
[Sony Xperia T, TL, TX, V] Arteni:
Mmh....

Well, I just think they don't wanna do it, but I'll tell them if they can. But my carrier is a french carrier and if it works in mine, i'm not sure it will work in yours.
[Sony Xperia T, TL, TX, V] hispasat:
Did you get your bootloader unlocked with sim unlock, or separately ?
[Sony Xperia T, TL, TX, V] Arteni:
I don't know, my bootloader is not unlockable and my sim is locked too.

I think it's not separately.
[Sony Xperia T, TL, TX, V] crazymister:
Please DON'T open a new thread in original development since this isn't any development at all yet. All there has been done is some speculation and some things are being looked into. But nothing has been developed yet.

Did I help? please press thanks button
[Sony Xperia T, TL, TX, V] Arteni:
I agree, it's not at all a Developpement.
[Sony Xperia T, TL, TX, V] matt4321:
Right so I've made slight progress.

In one of the strings I've found the bit of information that indicates weather the bootloader unlock appears as yes or no. somewhere in the device is a bit that says 'sm_rooting_status_not_rootable' which leads to the bootloader not being able to unlock. and for people who can unlock it says 'sm_rooting_status_rootable'. So I think if we could change it to the 2nd one we'd be able to get into bootloader mode, we'd need to also do some checksum stuff.

also found something to do with rooting status in libservicemenu.so but I'm a noob at reading .so files so I'll keep looking and see what I can find.

Anyone else made any progress? found anything that could be useful?
[Sony Xperia T, TL, TX, V] hispasat:
I am going to root again,and see if i can help

http://xdaforums.com/showthread.php?t=1886460