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[Tutorial][Xperia M2] Bootloader Unlocking

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2nd June 2014, 07:13 PM |#31  
cuatzstress's Avatar
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Flag Bekasi, West Java
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I Got bootloop after unlock bootloader and flash this,,,, HEEELP!!!!!!!!!!!!!!!!!!!!!!!!!


I found the solutuon for bootloop after unlock bootloader,
First unlock the bootloader using Official or else, it will bootloop, then Flash the Stock firmware but JUST FLASH SYSTEM ONLY, after that flash the kernel and continue follow this tutorial, Regards
Last edited by cuatzstress; 4th June 2014 at 02:11 AM.
14th July 2014, 01:04 PM |#32  
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can I re-lock device after unlocking ?
17th August 2014, 06:14 PM |#33  
ishakcez's Avatar
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Flag kayseri
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Originally Posted by Shivam Kuchhal

Tutorial for quick unlock

First things first :-

1. What is bootloader?
> Bootloader is a piece of code that runs before android loads up. Bootloaders usually contain several ways to boot the OS kernel and also contain commands for debugging and/or modifying the kernel environment.

2. Benefits of unlocking bootloader?
> You can flash custom kernels/ROMs.
> You can ALWAYS root your device. (compelling, eh?)
> You can flash alpha builds of newer firmware ( generally newer android version ) which is under testing and not meant for end consumers.

3. Disadvantages of unlocking bootloader?
> You may void your warranty.
> You may loose some proprietary vendor software such as Bravia Engine, Download Music info etc. due to removal of DRM security keys.
> OTA updater may refuse to update your device and pop up a 'Device's software modified' message.

4. Can i unlock my bootloader?
> Go to dialer
> Type *#*#7378423#*#*
> Service info > Configuration
> Rooting status :
"Bootloader unlock allowed" - You can unlock your bootloader
"Bootloader unlock not allowed" - You cannot unlock your bootloader

Unlocking bootloader:

You can unlock bootloader in two ways:
1. Official way(Instructions Included)
2. Flashtool(Recommended)

1. Generate your unlock key by entering your IMEI. (To check your IMEI - *#06# )
2. After you have the key, use flashtool or cmd prompt to unlock. (easy?)
3. To verify, check rooting status :
"Bootloader unlock done" - Congrats, you've successfully unlocked your bootloader.

How to relock bootloader?
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16th October 2014, 04:13 PM |#34  
gabripop's Avatar
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I was going to ask this too, like blocking the bootloader again
17th October 2014, 01:56 AM |#35  
RootLord's Avatar
Senior Member
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Originally Posted by gabripop

I was going to ask this too, like blocking the bootloader again

Originally Posted by ishakcez

How to relock bootloader?

If you backed up TA then just restore it, it will lock your TA.
If didn't go to flashtool select UBL and relock!!
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23rd December 2014, 08:12 PM |#36  
Flag Oldham
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if it says bootloader unlock allowed:no is there still a way to do it?
24th December 2014, 12:21 AM |#37  
Dzepar's Avatar
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Flag Ohrid
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Originally Posted by supertiger1234

if it says bootloader unlock allowed:no is there still a way to do it?

Not for free. You need to buy unlock code.

Sent from Xperia M2 D2303
24th December 2014, 04:23 PM |#38  
martrio's Avatar
Junior Member
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can i relock bootloader after unlocking?
24th December 2014, 04:35 PM |#39  
kaktus283's Avatar
Flag Warsaw
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I don't know why, but i can't unlock bootloader with Flashtool method because it stay's on "Connected in fastboot mode". Whatever, common method work perfectly with instruction from Sony site
14th January 2015, 09:27 PM |#40  
OguzhanVarsak's Avatar
Senior Member
Flag Balikesir
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Guys sorry for that but i cant do "use flashtool promt to unlock" part. Can someone explain me it? Thnx.

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