[GUIDE][LB] Root Jelly Bean 4.1.2 | Make ZIP from FTF [WORKING]

[ARNOB]

This is a simple guide to make a pre-rooted firmware and then use it.

What you need:
- A device with a rooted ICS and a recovery as well.
- A PC with flashtool installed.
- A Jelly Bean ftf.
- WinRAR or similar software.
- Patience.

What do you do:
Assuming you have enough requirements, lets begin!

0. In Case you haven't, flash stock ICS, root it and then install CWM.

How to make a prerooted zip

1. Open the JB ftf file with WinRAR.
2. Extract the system.sin file.
3. Open flashtool. Go to tools>sin editor and extract the [system.sin] file. You'll get an .ext4 file.
4. Extract the contents from the .ext4 file to a folder named system
using any of this. I prefer Linux Reader.
5. Add root to the folder. Download the attached root.rar file.
Copy the contents of SuperSU or Superuser to the folder you've made.
6. Create a zip file.
7. Copy the system folder into the zip file.
8. Download, extract and copy the attached META-INF.zip
9. Now you have a flashable prerooted zip.

0. Download prerooted firmware from the second post
or make one of your own by the guide above.
1. Copy the prerooted zip on your SDcard.
2. Now, boot into CWM on your device.
3. Wipe Dalvik Cache.
4. Go to mounts and storage and format system.
5. Now flash the zip but do not reboot.
6. On PC, go to flashtool and using flashmode select the JB ftf.
7. Check Exclude System (Put a tick mark on it).
8. Uncheck wipe data (ONLY IF YOU NEED IT)
9. Now flash it on your device.
10. Let it boot and now you have your rooted Jelly Bean fw!

New Meta-INF uploaded!

Check out second post for a visual instruction (screenshots)

TO-DO
- Make a better tutorial with Pictures and Screenshots DONE
- Upload prerooted zip for
Xperia S : Done
Xperia SL : You can use the same as Xperia S as the kernel remains of your device, you'll get 1.7GHz
Xperia Ion : Pending due to release
Xperia Acro S : DONE

Click Thanks if I helped​

 

[ARNOB]

At first READ the Instruction and then follow the Visual Instruction

Pre-rooted firmwares
Xperia S: http://xdaforums.com/showthread.php?t=2302631

Xperia Acro S:http://xdaforums.com/showthread.php?p=42082368
http://xdaforums.com/showthread.php?p=42083758​

 

[higherman]

This is a simple guide to make a pre-rooted firmware and then use it.

What you need:
- A device with a rooted ICS and a recovery as well.
- A PC with flashtool installed.
- A Jelly Bean ftf.
- WinRAR or similar software.
- Patience.

What do you do:
Assuming you have enough requirements, lets begin!



TO-DO
- Make a better tutorial with Pictures and Screenshots​

Sorry could you show me how to extract system.ext4 by using lunix reader?
Thx

 

[ARNOB]

Drive > Mount > System.ext4 > Save

I hope you get it

 

[mrkidvn]

Drive > Mount > System.ext4 > Save

I hope you get it

i really need a step by step pictured guide, or a video please.

---------- Post added at 02:02 PM ---------- Previous post was at 01:50 PM ----------

Drive > Mount > System.ext4 > Save

I hope you get it

when in CWM, how can i flash the device with flash toot?, may i have to switch it off?

 

[higherman]

Drive > Mount > System.ext4 > Save

I hope you get it

Ok i got it thank you!

 

[mrkidvn]

failed in flashing system.zip, maybe somethings wrong with my CWM, it doesn't any sign of success or fail while flashing.
i'm really confusing

 

[ARNOB]

i really need a step by step pictured guide, or a video please.
when in CWM, how can i flash the device with flash toot?, may i have to switch it off?

Pictured guide updated.
Use reboot option in CWM and connect immediately in flashmode (hold vol down button and plug in USB)

failed in flashing system.zip, maybe somethings wrong with my CWM, it doesn't any sign of success or fail while flashing.
i'm really confusing

Can you flash other zips? Try reinstalling CWM.

Is the META-INF perfect? I haven't tried it yet.

 

[dazjp71]

error 7

I have tried this method to pre root the world generic ftf, after I have formatted system and try and install the pre root zip file it always ends in an error 7, have you got any tips on how to solve this.

this is what i see

symlink: some symlinks failed
E:Error in /sdcard/rootjb.zip
(status 7)
Installation aborted

 

[ARNOB]

I have tried this method to pre root the world generic ftf, after I have formatted system and try and install the pre root zip file it always ends in an error 7, have you got any tips on how to solve this.

this is what i see

symlink: some symlinks failed
E:Error in /sdcard/rootjb.zip
(status 7)
Installation aborted

Mount system from CWM and then try again.
If that does not work, replace the updater-script (META-INF) with the one attached here now.
If that still doesnot work, try copying the META-INF folder from a custom ROM of your device.

 

[dazjp71]

Mount system from CWM and then try again.
If that does not work, replace the updater-script (META-INF) with the one attached here now.
If that still doesnot work, try copying the META-INF folder from a custom ROM of your device.

Thanks but that failed as well

 

[mrkidvn]

i think i will wait for another root method

 

[ARNOB]

Thanks but that failed as well

What did you try? Can you give some more details as in your device and ROM?

 

[dazjp71]

What did you try? Can you give some more details as in your device and ROM?

I am trying to preroot the generic world ftf for jb on xperis s on .45, and as I was typing I was installing an updated rom.zip but the same thing happened, I have used the files from the first post.

I am using CWM based recovery v6.0.3.2 and eroot

My mobi is also generic world, unlocked bootloader

---------- Post added at 12:42 PM ---------- Previous post was at 12:15 PM ----------

I am trying to preroot the generic world ftf for jb on xperis s on .45, and as I was typing I was installing an updated rom.zip but the same thing happened, I have used the files from the first post.

I am using CWM based recovery v6.0.3.2 and eroot

My mobi is also generic world, unlocked bootloader

ok one more update, the rom.zip kept failing but when I rebooted the phone it loaded jelly bean, I checked and it is fully rooted, I then turned it off and completed the flashtool step.

So now I have a rooted xperia s running jelly bean, thanks for the help and tutorial mate.

 

[deanz93]

here is ZIP file for Acro S..JB with SU
http://hugefiles.net/d11n4vvaz65v

 

[ARNOB]

I am trying to preroot the generic world ftf for jb on xperis s on .45, and as I was typing I was installing an updated rom.zip but the same thing happened, I have used the files from the first post.ok one more update, the rom.zip kept failing but when I rebooted the phone it loaded jelly bean, I checked and it is fully rooted, I then turned it off and completed the flashtool step.

So now I have a rooted xperia s running jelly bean, thanks for the help and tutorial mate.

So basically the zip actually flashes but there is a problem with CWM, right?

here is ZIP file for Acro S..JB with SU
http://hugefiles.net/d11n4vvaz65v

Thanks, I'll add your post to the OP

Posted by Sony Xperia™ Ion via xda-premium

 

[dazjp71]

So basically the zip actually flashes but there is a problem with CWM, right?

Yup I think so, I had to finally unlock my bootloader as well just to be able to keep flashing ICS, I also tried different versions of CWM but nothing worked until after I sorted the folder structure in the rom.zip, when I tried it again it installed for about 3 minutes before failing, instead of the 20 seconds it took before.

 

[nqhuy90]

FIXED
This is pre-rooted system for Acro S JB (SuperSU)

 

[deanz93]

This is pre-rooted system for Acro S JB (SuperSU)

http://d-h.st/ori
or
AcroS_JB_PreRooted_huynq.net.zip (465.0 MB)
https://mega.co.nz/#!wlg3RQCL!P5fPRgIYRJFgG2wEn1Yt70RbiDxhBR1zBBRnAqFxs9E
or
http://www.fshare.vn/file/HWXU5MVUKU/

worldwide region?

 

[nqhuy90]

worldwide region?

I think so:

See instruction from ARNOB
http://xdaforums.com/showpost.php?p=42083917&postcount=340