Unsecure kernel for LT28i + Root

yuunanase

Member
Nov 12, 2008
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Hi,

Here is my first try for building an insecure kernel without su su or any other modifications.

6.0.F.0.72 https://hotfile.com/dl/162182111/93e199a/LT28i_6.0.F.0.72_Boot.elf.html
6.0.F.0.111 https://hotfile.com/dl/162367993/a96688d/LT28i_6.0.F.0.111_Boot_Inecure.elf.html

Thanks to Androxyde for helping me build this kernel.

Xperia ION rooting pack: https://hotfile.com/dl/162186202/75d3ffd/Xperia_Ion_Rooting.zip.html

Here is a batch file for adding su and busybox into the rom.

[Procedure for rooting]
1. Unlock the bootloader.
2. Flash your Xperia ION LT28i with the insecure kernel.
3. Boot the phone and connect with debugging on.
4. Extract the Xperia ION rooting pack and run the batch file.
5. Install the latest version of superuser and busybox from google play.
 
Last edited:

popfan

Senior Member
Jan 26, 2011
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Anyone get to try this on LT28at yet to see if it works? I am assuming it would since we can flash LT28i firmware onto our phones. The only question would be if it works with LTE or not.
 

Spectre51

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Jul 24, 2010
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Anyone get to try this on LT28at yet to see if it works? I am assuming it would since we can flash LT28i firmware onto our phones. The only question would be if it works with LTE or not.
Well since you need an unlocked bootloader it won't work on the lt28at since we can't unlock the bootloaders yet.
 
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Spectre51

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Jul 24, 2010
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yuunanase have you tried making a pre-rooted system image that you can flash with an unlocked bootloader? Would be nice to have that without having to mess with any kernel changes.
 

Spectre51

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Jul 24, 2010
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I am still learning how to make a prerooted system.img. Do you have any idea how to build one?
This was the very basic guide I followed for the Xperia S but when trying for the ion and for ICS on the Xperia S it gets errors on the mount command:

Installed debian/gnome, updated and downloaded pyton and other packages

downloaded ext4 utilites:
http://forum.xda-developers.com/showthread.php?t=1081239
created sin2img.py:
https://github.com/defer/semc-xperia-tools/blob/master/sin2img.py
created system.sin with flashtool

[email protected]:/home/user# cd android
[email protected]:/home/user/android# python ./sin2img.py system.sin system.img
[email protected]:/home/user/android# mkdir system; mount -t ext4 -o loop system.img system

download Superuser.apk and su from http://androidsu.com/superuser/

[email protected]:/home/user/android# cp Superuser.apk system/app/
[email protected]:/home/user/android# cp su system/bin/
[email protected]:/home/user/android# chmod 644 system/app/Superuser.apk
[email protected]:/home/user/android# chmod 06755 system/bin/su

[email protected]:/home/user/android# ./mkuserimg.sh -s system ./system2.img ext4 ./temp 1024M
 

PoorCollegeGuy

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Dec 18, 2011
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Look at the shanigans XDA posted on their website.


http://www.xda-developers.com/android/att-sony-xperia-ion-rooted/#comments

No root YET for AT&T devices. Nice try though XDA.
What shenanigans would you be referring to? The bootloader is locked down, but this is still a root method that works. I understand your frustration, but it isn't my fault or XDA's fault that the bootloader was locked down so please try to direct your anger at the people you're actually mad at (AT&T/Sony).

Just because no one can follow "step 1" doesn't mean this isn't a legitimate root method, I really don't see the point or validity of your comment here. In fact, wouldn't it being up on the XDA Portal bring this phone to the attention of potential developers? Well, not anymore. I know I wouldn't want to develop on a phone that gets trolled when it makes the front page :/
 

Spectre51

Senior Member
Jul 24, 2010
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What shenanigans would you be referring to? The bootloader is locked down, but this is still a root method that works. I understand your frustration, but it isn't my fault or XDA's fault that the bootloader was locked down so please try to direct your anger at the people you're actually mad at (AT&T/Sony).

Just because no one can follow "step 1" doesn't mean this isn't a legitimate root method, I really don't see the point or validity of your comment here. In fact, wouldn't it being up on the XDA Portal bring this phone to the attention of potential developers? Well, not anymore. I know I wouldn't want to develop on a phone that gets trolled when it makes the front page :/
+1

Though I think a better title to the post should have been just Sony Xperia ion not AT&T

Its always been this way for users of bootloader locked devices. The fact that a root method exists for unlocked bootloaders is great. Just means we have to figure out how to unlock the BL for those devices that are locked.

Once we can figure out what Sony has done with the new system.sin files we might actually be able to get a simple prerooted image. Again for unlocked BL.

As far how we can go about unlocking the AT&T BL....that I have no clue. Don't think there is a testpoint method for these like there was for the Xpedia Play.

Sent from my LT28at using Tapatalk 2
 
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npspears

Senior Member
Oct 10, 2010
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Misleading

What shenanigans would you be referring to? The bootloader is locked down, but this is still a root method that works. I understand your frustration, but it isn't my fault or XDA's fault that the bootloader was locked down so please try to direct your anger at the people you're actually mad at (AT&T/Sony).

Just because no one can follow "step 1" doesn't mean this isn't a legitimate root method, I really don't see the point or validity of your comment here. In fact, wouldn't it being up on the XDA Portal bring this phone to the attention of potential developers? Well, not anymore. I know I wouldn't want to develop on a phone that gets trolled when it makes the front page :/
I really wasn't trying to be a troll. I just thought your article was misleading and I was trying to call attention to that. I'm not mad and I fully expect the device to be rooted soon. I flashed the international firmware so I no longer have all that AT&T bloat so I'm happy. I really only use root to back up all my apps anyway. Hopefully there will be kernel development in the future but that is just an added bonus really.

As for developers, my thought was that the article might deter the developers that we desperately need. I figured if they thought that we already had root then they would spend their time elsewhere. But what do I know about devs?

My original intent was only to bring to light to those in the community that most AT&T devices do not have root. I believe in the XDA community, and I'm sure we'll have one soon.

Thanks for all you do for XDA PoorCollegeGuy. :) Sometimes we should read and give the writer the benefit of the doubt. ;)
 

PoorCollegeGuy

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+1

Though I think a better title to the post should have been just Sony Xperia ion not AT&T

Its always been this way for users of bootloader locked devices. The fact that a root method exists for unlocked bootloaders is great. Just means we have to figure out how to unlock the BL for those devices that are locked.

Once we can figure out what Sony has done with the new system.sin files we might actually be able to get a simple prerooted image. Again for unlocked BL.

As far how we can go about unlocking the AT&T BL....that I have no clue. Don't think there is a testpoint method for these like there was for the Xpedia Play.

Sent from my LT28at using Tapatalk 2
I was thinking about that, the AT&T/no AT&T thing in the title, but I ended up going with what it's called in the forums. Top left corner it says "AT&T". It's a little confusing because if I don't include things like that, people often get mad at me. the AT&T Galaxy Note users hated it before I started differentiating their development from the International development so I got into the habit of just putting exactly what it is entitled on the forums.

I really wasn't trying to be a troll. I just thought your article was misleading and I was trying to call attention to that. I'm not mad and I fully expect the device to be rooted soon. I flashed the international firmware so I no longer have all that AT&T bloat so I'm happy. I really only use root to back up all my apps anyway. Hopefully there will be kernel development in the future but that is just an added bonus really.

As for developers, my thought was that the article might deter the developers that we desperately need. I figured if they thought that we already had root then they would spend their time elsewhere. But what do I know about devs?

My original intent was only to bring to light to those in the community that most AT&T devices do not have root. I believe in the XDA community, and I'm sure we'll have one soon.

Thanks for all you do for XDA PoorCollegeGuy. :) Sometimes we should read and give the writer the benefit of the doubt. ;)
Forgive me for my misunderstanding as I'm sure you can guess how hard it is to guess at a person's tone of voice when reading a statement as opposed to hearing it. I have taken no offense and I hope you didn't either.

Dev support is hard to gauge or predict. Some devs love the challenge, even if they don't own the device. Others would rather stick to home base and wouldn't care who needed the help. Frankly, based on my experience writing about Sony Xperia devices, I thought pretty much everything you guys had was interchangeable. I've seen literally hundreds of "this works on all xperia phone" mods n such. If I were you guys, I'd hit up the well known Sony Xperia hackers to see if they can help. Or, if you can talk em into it, the guys who do the Juopunubear S-Off mod are brilliant with bootloaders. That's what I'd do...a friendly suggestion from your neighborhood spy (I mean writer).

In any case, when/if the bootloader gets unlocked, better believe it's going up on the portal :) i'll be keeping an eye out for you guys.
 
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Auggy99

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Jul 2, 2012
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you should include something in the article saying that it doesn't apply to the at&t version, it's gonna mislead ppl which will then cause a wave of ppl posting everywhere complaining about it not working on their at&t ion because we all know that the vast majority of users don't tend to read the threads beforehand
 
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hijenjie

Member
Apr 5, 2006
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Could someone tell me what the procedures to flash LT28i with the insecure kernel? Your kindly help would be appreciated. Thanx!

Sent from my LT28i using xda premium