yashsingh1/xdaforums huggingface dataset:
[Sony Xperia P, U, Sola, Go] RyomaEchizen:
He's right. When I put the B.1.10 kernel for root on the B.1.54 Nordic firmware the update center app automatically change mi kernel to B.1.54
[Sony Xperia P, U, Sola, Go] thanitos:
So you flashed a different kernal?
[Sony Xperia P, U, Sola, Go] RyomaEchizen:
yes, with flashtool for rooting. B.1.54 firmware has Mon Oct 15 14:57:07 2012 Kernel. B.1.10 firmware has Mon Sep 10 16:04:56 2012 kernel. XU Root only is possible with B.1.10 Kernel, so we change the kernels.
[Sony Xperia P, U, Sola, Go] thanitos:
Stock kernal? If it's stock it doesn't matter If you can flash a custom kernal and it works and boots and you can see it's custom then were having a conversation
[Sony Xperia P, U, Sola, Go] tefal78:
every orkaving

Remember, the XU were several month ago in Gingerbread

Now they are in ICS.

Even the "Bootloader Unlock Allowed: no" (like my XU) succes in this upgrade.

Why not compare the two ftf file ?

If Xu can pass from GB to ICS is they are not "so much" locked :cyclops:
[Sony Xperia P, U, Sola, Go] ilgreco112:
Its not that easy my friend
[Sony Xperia P, U, Sola, Go] XperianPro:
Stop talking non senses , everyone who wants to flash kernel execute

DD if=/sdcard/boot.img of=/dev/block/mccblk0p9

Image needs to be .img format of course bootloader needs to be unlocked to disable signature check but everyone can flash it.
[Sony Xperia P, U, Sola, Go] Llumex03:
Could we try to sing a kernel imagen to pass the signature check?

Regards ;) .
[Sony Xperia P, U, Sola, Go] ppalfinger:
xperia s

Is it already possible to unlock the bootloader of an xperia s where it says bootloader unlock allowed: no?
[Sony Xperia P, U, Sola, Go] doctor_droid:
Thats what the guyz r working on here my friend ;)
[Sony Xperia P, U, Sola, Go] thanitos:
Oh they are?
[Sony Xperia P, U, Sola, Go] tefal78:
Non senses?

The result for a locked bootloader is an hard brick, isn't it?
[Sony Xperia P, U, Sola, Go] mirhl:
no, locked bootloader CAN'T hard-brick

you can anytime use flash mode to make boot official FW
[Sony Xperia P, U, Sola, Go] tefal78:
I also think so...

Can't we find a way by using a comparison between the two tft file (GB and ICS)?

---------- Post added at 04:37 PM ---------- Previous post was at 04:32 PM ----------

so can we or can't we flash the boot.img in a locked bootloader?
[Sony Xperia P, U, Sola, Go] thanitos:
Na just failed to flash
[Sony Xperia P, U, Sola, Go] tefal78:
But, flashtool is capable of flashing two different android distribution with two different kernel(ie official GB toward ICS on a locked bootloader device).

What do i miss?

What i do not understand? :d)

I understand that there is a signature pb but the tft file is the same for several XU.
[Sony Xperia P, U, Sola, Go] nickholtus:
All this is only possible if there is a exploit in the bootloader. After Xperia 2010 no one found a exploit.

Without any exploit you can't flash unsigned images
[Sony Xperia P, U, Sola, Go] tefal78:
OOOOKKKKK.

The official file from Sony are signed...

so, If we want to install a ROM with a custom boot.img we need to sign this rom.
[Sony Xperia P, U, Sola, Go] spahbod:
just sign kernel or unlocking bootloader for uncheking it!
[Sony Xperia P, U, Sola, Go] peiman.rps:
I'm from Iran. Locked Bootloader, Xperia T LT30P

my unlock code from Sony 8F73941A7E733CF2

My TA file

View attachment 1643591

Thanks so much
[Sony Xperia P, U, Sola, Go] nickholtus:
We can't sign images, only Sony has the possibility to do that.
[Sony Xperia P, U, Sola, Go] spahbod:
can we copy a sign from sony stock kernel? why?

sorry for my Qustions!

im a beginner...
[Sony Xperia P, U, Sola, Go] nickholtus:
nope, it is something like a md5 (same principe, but only sony uses it)

so it is file specific.
[Sony Xperia P, U, Sola, Go] dapaua:
You cannot sign the kernel. Only Sony can.

For locked bootloader, you need the kernel to be signed. For unlocked bootloader, you don't need it. The whole idea of this thread is to unlock the bootloader of the phones that cannot be officially unlocked.

To do this, what these nice people in this thread are doing (Thank you very much for your effort, guys) is comparing bootloaders before and after unlocking, to see what is happening in the process . And you need notions of cryptography to do that, it's not as easy as adding or removing some info from the ta.
[Sony Xperia P, U, Sola, Go] tefal78:
Oup's, i've never apologize for my early rooky question.

hope i've bother any one :o
[Sony Xperia P, U, Sola, Go] chrisryn:
I found this while researching and looking into unlocking bootloader = no on my att sony ion. Had an idea but have read this thread several times to make sure I understand what has been tried and where the project currently sits. If I understand correctly it is believed that the BL is lock/unlock option resides in a .ta file. It is thought that changes to this file could possibly unlock BL. As it stands now the issue is that the file is signed by sony so any changes made can either render a hard brick or successful flash but with no changes and cell service compromised. So that's what I have gathered from this thread.

Now on to my thoughts and idea. Reading how other devices have gotten past boot loader locks I started looking into partitioning structures of my ion(and it is different than most android devices I have Developed for). That being said I am unable for some reason to pull a backup of my simlock.ta for comparison reasons but I did find the areas that are being changed in hex to the simlock.ta in hopes for unlocked BL. On the ion it is located in /dev/block/mmcblk0p1. Now since this has already been flashed to the phone then theoretically we could do a dump of this partition make the hex edit changes and then reapply the dump to the device should not need the strict key check. I would try this out on my device but its a work issued device. What are your opinions of this or am I just running in circles and my time would be better spent finding an exploit or getting a kexec kernel to boot on the device?
[Sony Xperia P, U, Sola, Go] nickholtus:
I think kexec would be much better.
[Sony Xperia P, U, Sola, Go] chrisryn:
I agree just can't find much information on the process of getting a kexec working.
[Sony Xperia P, U, Sola, Go] barradax:
something like that its possible to us?

http://xdaforums.com/showthread.php?t=1599648

---------- Post added at 07:49 PM ---------- Previous post was at 07:39 PM ----------

the pictures helped with anything?
[Sony Xperia P, U, Sola, Go] chrisryn:
Thats what I'm looking at not alot of info on kexec and building for specific device.
[Sony Xperia P, U, Sola, Go] chrisryn:
Looks like its not possible stock kernel has to support it and seems ours doesn't
[Sony Xperia P, U, Sola, Go] nickholtus:
it is possible, motorola stock kernel also doesn't support it, only the custom kernel needs to support it.

there are devs who got it working on xperia 2011 with locked bl
[Sony Xperia P, U, Sola, Go] tefal78:
And if we make believe to the sony upgrade program (sony bridge for me on OSX) that the connected phone is an unlock one?

Just downgrade the phone, plug a "fake unlocked phone" and upgrade the phone.
[Sony Xperia P, U, Sola, Go] chrisryn:
I have asked the dev for freexperia on the ion forms to compile a kecex supported kernel as I can't currently build as my build system is down. If he complies I will see what I can do to get this workaround complete.
[Sony Xperia P, U, Sola, Go] dapaua:
I think you need some kernel modules for the stock kernel to support kexec. This can be done if we have the sony kernel sources, which I think we have.

I'll do this if I could, I always thought this was the easier way, and you don't lose your warranty (I'm not implying that you lose your warranty for sure if you unlock your bootloader unofficially, but in most countries I think that this is true).
[Sony Xperia P, U, Sola, Go] XperianPro:
This is hard to do I think,but possible.
[Sony Xperia P, U, Sola, Go] juhn777:
Hey, I have an Xperia 2011 phone, could you link me to the thread? :D
[Sony Xperia P, U, Sola, Go] mirhl:
here you are

http://xdaforums.com/showthread.php?t=1896553
[Sony Xperia P, U, Sola, Go] nickholtus:
It's not released, more a proof of concept. The dev doesn't have a Xperia anymore
[Sony Xperia P, U, Sola, Go] barradax:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Any news?
[Sony Xperia P, U, Sola, Go] chrisryn:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Some one should look into the the partion I mentioned. I can no longer test as the ion is gone. Nothing wrong Ion,Just several things l didn't like about it. I used

my 14 day exchange and got the Note 2.
[Sony Xperia P, U, Sola, Go] XperianPro:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

You got it wrong ,TA files is not signed and could be flashed without problems but lines at the end are IMEI specific,if code at the end (something like line of code made MD5 sum but with IMEI)

Only way would be to change IMEI which I do not know where is stored.
[Sony Xperia P, U, Sola, Go] godofcourse:
Is it possible to rebrand the phone remove all sony influences and flash a custom kernal? or custom bootloader. i have a sony experia tipo rooted but wit locked bootloader willing to try anything to unlock the bootloader. i will need step by step instructions as im very new to this.

also could anyone recommend any useful reading material to give me a firmer grasp on what im actually doing.
[Sony Xperia P, U, Sola, Go] Galcactus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

I've got an idea. If we take a series of known imei and working ta from a phone with bootloader unlock= yes then theoretically it could be brute forced, if we know the encryption used with it. What we can do is construct a programme that runs the encryption calculations on all the possible combination of strings until we get the possible different combinations and get the right imei out, as well as the right string after it. If we repeat this enough times we can get a pattern base built up with what the string corresponds to and how it links in with the parts before it. While I'm no recognised/wonder programmer or cryptographer, I believe that with help on here I could write such a programme. The programme would very probably need to run for several days depending on clock speed and power before it even finds a single match but I think it's possible. Thoughts?

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia P, U, Sola, Go] patsater:
My IMEI is located in /data/drm/marlin/imei.txt - that is where my one is located - I was just looking around through system files and folders and found it, so there you go ;) Hope it helps! :good:

P.S I don't think it is possible to change it though.. :)

P.S.S I tried Changing it, but when I did it did not affect the IMEI - when I rebooted the text file changed back to how it originally was... soo good luck ;)

P.S.S.S You can try this, haven't tried myself though. http://www.youtube.com/watch?v=mealCjFYSss
[Sony Xperia P, U, Sola, Go] Sephirothrx7:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Breaking a 256 bit key by brute force can take billions of years using super computers that don't exist yet. It's not that simple.

Enviado de meu LT22i usando o Tapatalk 2
[Sony Xperia P, U, Sola, Go] Galcactus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

A) it's not quite the same, b) the bit length is less, and c) if it is md5 those can be calculated very quickly on normal computers. Md5 has been cracked anyway, but I don't know about that.

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia P, U, Sola, Go] thanitos:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Didn't we determine it was hashed in sha
[Sony Xperia P, U, Sola, Go] Galcactus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Sha is more secure than md5, but it was still proven to not be infallible, hence the consequent improvements to sha1,2,3 etc. I'll need to look into the algorithms behind sha and see if there's any way to implement it. Anybody think this could/could not work?

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia P, U, Sola, Go] coolnow:
It won't work.
[Sony Xperia P, U, Sola, Go] XperianPro:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

I have some script but gives some error like it only backups second part of boot loader.
[Sony Xperia P, U, Sola, Go] optic-XPERIA:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

someone can upload some video which shows how it's done?
[Sony Xperia P, U, Sola, Go] thanitos:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Isn't sha 5 not reversible
[Sony Xperia P, U, Sola, Go] mirhl:
wtf?

talk clearly
[Sony Xperia P, U, Sola, Go] Galcactus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

It doesn't matter. All we'd really be doing is encrypting the strings and comparing them to the existing ones and seeing what matches, then finding out the correlation between them and the imei. So it doesn't need to be crackable, it just needs to be calculated.

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia P, U, Sola, Go] cartmenicus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

But that doesn't actually make out downloader unlockable?
[Sony Xperia P, U, Sola, Go] Galcactus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

No, but it could give us some vital information: in the ta we have found the code responsible for the bootloader unlock= yes or no, where the imei is present as well as a segment after that, which we don't know what it is, but is probably what is causing the SIM problems as far as we know. This process would simply allow us to find patterns and the correlation between the strings, so possibly getting us a step closer to what would make the process work.

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia P, U, Sola, Go] optic-XPERIA:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Works on xperia s?
[Sony Xperia P, U, Sola, Go] coolnow:
Encrypting using what? Our IMEI's? Then seeing if the resulting data = close to the one found on our phones? It won't work dude, every little possibility opens up to billions, trillions, even more than that, of permutations. The guys in the PS3 scene were going to try and do this but instead of waiting until the universe collapses on itself, they went after software vulnerabilities and eventually found encryption keys through them. Also the first keys they found was due to Sony using a known value, but here, we have no known values, just maybes and what ifs.
[Sony Xperia P, U, Sola, Go] Galcactus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Using whatever encryption Sony used to get that extra value. People think it's either sha or md5. Then, you got it, see which one matches the one at the end. Yeah, but loopholes are so out of my league, I'd need a ladder to punch that high above my weight class! The way I calculated it, there's 255 different possibilities per string given that the original string is using the full Unicode set, however there is a strong chance that Sony only used the "common" strings which dramatically reduces the amount of possibilities (there are some weird Unicode characters out there that will screw up any encryption!) Going with the maximum number of strings, the amount of strings per run will increase exponentially, e.g. the first run would have 255^1 strings, the second would have 255^2, third run 255^3 and so on. If a computer is decent enough it can probably calculate an sha value in a few seconds or less, depending on the efficiency of the programme and the string length (therefore showing if it's linear time or polynomial, but given the calculation in question it's almost definitely polynomial time). Therefore I think, for a relatively smallish amount of characters it would probably take a decent rig, which is powerful enough to compile, a day or two tops to get all the different combinations. Then the comparing the data, that would be substantially less. So given around 3 days max, if the method itself is sound, we could have one 000007DA comparable with the original imei.

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia P, U, Sola, Go] RyomaEchizen:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Sounds good :)

Enviado desde mi ST25a usando Tapatalk 2
[Sony Xperia P, U, Sola, Go] Galcactus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

@OP Do you think what I outlined can help/work? If yes then would anybody be kind enough to confirm the encryption/hashing techniques used? Sha, md5, salt etc.

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia P, U, Sola, Go] xgunax:
i wanted this so much! :P
[Sony Xperia P, U, Sola, Go] optic-XPERIA:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Works on xperia S?
[Sony Xperia P, U, Sola, Go] thanitos:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Read the posts please. Nothing here has worked
[Sony Xperia P, U, Sola, Go] akaygee:
having looked at ta files form my own phone which is bl-no and another ta with bl-yes from another phone same model its clear to see there is more then a few lines of a difference theres extra lines in the bl-no ta.then again with bl-yes to bl-unlocked some lines are removed and extra code is added to existing lines.its a must to find the encryption/hashing techniques used to find and understand what code changes have been made.am i right to think rsa key encryption is not involved here and did anyone not try crc32 checksum after editing the file.
[Sony Xperia P, U, Sola, Go] Galcactus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

@optic-XPERIA

Dude, read the entire thread before posting! And spamming with the same question is pointless. Go read the forum rules, then read this entire thread before posting here again!

@akaygee

Thanks, though some of that stuff was already established. As far as I knew, but don't take my word as gospel, most of the other lines had sorted and weren't a problem anymore it was just the 000007DA area which have the SIM reading problems. Now since I'm fairly optimistic, I'm taking the fact that the OP hasn't posted on a while means that they're got something up their sleeve!

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia P, U, Sola, Go] thanitos:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

I assume they gave up trying to decode the 7a line. It, as mentioned before, would probably be easier to find a hardware flaw rather then brute forcing something that we arnt even entirely sure of its code origin. On top of that we'd need to sign the ta file.
[Sony Xperia P, U, Sola, Go] Galcactus:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Well I've got the Xperia t so hardware wouldn't exactly be the best answer for me... that's exactly why I proposed my idea which would let us find the correlation between the codes. And the ta isn't signed, according to the OP who appears to be far more knowledgeable than me in these matters.

Click the thanks button if I helped!

Sent by G.L.A.D.O.S.
[Sony Xperia P, U, Sola, Go] XperianPro:
Please this wont work,to make this work we need to find where is IMEI located,because if IMEI is located on mccblk0px partition it would be pretty easy as flashing TA and x partition from another device,only problem throught will be devices will have same IMEI,and just for someone who wants to know BOOTLOADER is FULLY CHANGEBLE and WRITABLE most possibly best way will be pathing bootloader to disable security check and then simply flash kernels throught recovery od dd.
[Sony Xperia P, U, Sola, Go] thanitos:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Looks like unlocking your phone(contract wise) will be illegal in the US, wonder what's next
[Sony Xperia P, U, Sola, Go] derrickdroid:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Contract wise? What you mean? And where did you read this?
[Sony Xperia P, U, Sola, Go] thanitos:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

http://www.foxnews.com/tech/2013/01/24/unlocking-cellphones-becomes-illegal-saturday/

The law was passed in October it goes into affect this Saturday?
[Sony Xperia P, U, Sola, Go] derrickdroid:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

(Note that unlocking is different from "jailbreaking," which opens the phone up for running additional software and remains legal for smartphones.)

Pretty much talking about sim unlocking. I don't think this new law has anything to do with boot loaders.
[Sony Xperia P, U, Sola, Go] thanitos:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Yes I know that thats why I said I wonder what's next read my first post about it
[Sony Xperia P, U, Sola, Go] theronkinator:
Maybe in the US, but that **** doesn't fly anywhere else, in the UK, we have a regulator who has forced all operators by law to unlock your phone, some may charge a small fee or if not on a contract have a minimum time limit, but they have to do it.
[Sony Xperia P, U, Sola, Go] Yaguin:
Zip files for my wt19a

I send u the files you`ve required
[Sony Xperia P, U, Sola, Go] Arteni:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

helo guys !

I haven't rode all the thread but I had post in the start of this thread. Any solution found ? Is it work, and in all Xperia device ?

Thank you so much.
[Sony Xperia P, U, Sola, Go] linsbr:
Same here in Brazil...

It's a total non-sense to make sim unlocking against the law, it looks like the cell phone is a carrier property, not yours
[Sony Xperia P, U, Sola, Go] mirhl:
we are talking about unlocking bl to flash custom kernels

its purpose is not precisely to sim-unlock the phone
[Sony Xperia P, U, Sola, Go] wetall:
Help

I want to install CyanogenMod however I can not install fastboot usb drive, please help me - OS: WINDOWS 7 64-BITS
[Sony Xperia P, U, Sola, Go] mirhl:
drivers are here
[Sony Xperia P, U, Sola, Go] wetall:
Please

I've done everything but I can not install usb driver, always gives the same error (43) Windows will not let me update the driver, says it is already installed, but it says unknown device. But I do not know what to do. Please someone indeque me another method. please
[Sony Xperia P, U, Sola, Go] derrickdroid:
Re: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Use Google search for Xperia PC Companion. That will give you all needed drivers. This thread for boot loader unlocking. Not drivers.
[Sony Xperia P, U, Sola, Go] wetall:
Erros

I did everything you stated, but it did not work, the following errors.
[Sony Xperia P, U, Sola, Go] mirhl:
R: [DEV] Unlocking bootloader on Bootloader Unlock Allowed: No "NEED FINAL TESTERS!"

Open device manager

Disconnect phone and reconnect in fastboot (volume+)

As soon as the list refresh there will be something called s1 fastboot

That's what you need to update