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[SS/DS]Upgrade/Restore/UnlockBL/Root(Tested on Dual)

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By Tommienots, Member on 16th April 2014, 08:33 PM
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Hello guys, I just want to share the steps on how my Xperia M[dual] is rooted and has its bootloader unlocked for about 2weeks dating to this post. I updated my XM to 4.3 and missed the benefits of a rooted android so I found a way to root it(During that time rooting on locked BL was still impossible).But upon searching methods and asking people on how to. I discovered a way on how to root my phone and unlock my bootloader and learned something that will make you feel confident on tinkering with your device.

So basically, Im not pertaining on rooting on this thread but upon reading the steps you might learn something that I also learned
This is for those Xperia M users who upgraded to 4.3 who wants to:
  • Downgrade to 4.1/4.2 and UnlockBootloader
  • Root their XM[Unlocked Bootloader][Dual]
  • Create Firmwares from their own country.
  • Also to create backups

First. let's assume you are in 4.3(locked bootloader)and doesnt know anything about FTF's and backups and willing to do anything just to install apps that requires root permissions. Just like me
Here are the steps.
1.Make your own 4.3 FTF file from SUS. The FTF from here is for your own country
Here's the guide on how to:
2.Flash a FTF file with lower android version. You can search the appropriate FTF file for your device in Xperia M android development.
Here's the guide on how to:
Step 3 will be focusing on unlocking your bootloader. You can read it (if you want to root) or just skip it (if you're only concerned on backups) and proceed to other steps

3.Root your phone while running in 4.2.2 android version and unlock your bootloader.
Search the forum on how to root 4.2.2/4.1 you need to be rooted to unlock your bootloader. Here's the guide for unlocking BL:
Note: Don't install any kernel for now just stick to stock kernel to avoid issues because we will be upgrading back to 4.3. If you read step 1 you definitely have your own FTF backup
4.Flash the FTF file from step 1 and now youre back to 4.3 with UNLOCKED BOOTLOADER, TA-BACKUP, 4.2.2 &4.3 FIRMWARE

5.Optional StepThis method is strictly for XM Dual users only, because the kernel in the link provided here is the stock kernel xm dual 4.3 with CWM integration. For XM single users just search you own stock kernel with CWM if you want CWM
Follow the last 2 steps provided here:
By now you have the knowledge on how to fix your own device. Example: If you got bootloop by flashing tweaks or kernels you can just flash your own FTF file to have a fresh start again.

Proof that I did this also. This is a private conversation of me and ansebovi
Originally Posted by ansebovi

Originally Posted by Tommienots

So ill summarize all you told me so i can proceed

my current phone version android 4.3
1. Make my own FTF file in this current version.
2. Flash FTF file with android os running 4.2.2
3. Root while in 4.2.2
4. Back up TA partition
5. Unlock Bootloader
6. Flash the ftf file from step 1
7. proceed with the steps in this link

upon completing these steps, am I rooted now running 4.3?

thats what i understood. correct me if im wrong.


That's it have a good day

  • ansebovi
  • Deadmask
  • shiromau
  • Bonoboo
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16th April 2014, 08:56 PM |#2  
paper13579's Avatar
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There are already threads on all of these things. There is no need for this one

Sent from my C2004 using xda app-developers app
16th April 2014, 09:01 PM |#3  
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Originally Posted by paper13579

There are already threads on all of these things. There is no need for this one

Sent from my C2004 using xda app-developers app

Im just sharing the method I used in rooting my phone.
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