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How to unlock bootloader on your 'Sony Xperia E C1504/C1505' // Bootloop fix!

OP SmashMii

20th March 2014, 07:37 PM   |  #1  
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Hello!

Today I am gonna teach you how to unlock (and relock) your bootloader. Also fixing bootloop.

Disclaimer! Proceed at your own risk! I am not responsible if anything happens to your phone. Although if you follow every step carefully, you won't have any problems. Unlocking bootloader WILL void your warranty, but you can relock it, so it's under warranty again. Also back up your data!

So lets first talk a little bit, what bootloader is and what a bootloop is. Bootloader is required for some mods like CWM, custom ROMs and so on. Bootloop is if you have unlocked your bootloader, and try to boot your phone, but the booting animation will start to replay, so you basically can't boot up your phone.

Make sure USB Debugging and Unknown Sources are enabled.

But lets get to unlocking the bootloader, shall we.

First, on your phone open Dialer. Type *#*#7378423#*#* to acces the Service Menu. Select Service info, then Configuration, and look for Rooting Status. If Bootloader Status says Yes, then you can unlock your bootloader, if not, stop right now!
Now take a piece of paper, and write down your IMEI - you are gonna need it later to get the bootloader unlock key.
Nextly, download and install Flashtool.
Once installed, go to this site. Fill in the information, and you should recieve a bootloader unlock key onto your eMail.
Now open Flashtool. Click the BLU icon. Then unplug your device, turn it off, hold down the volume up key and then connect your phone to your PC via USB cable. (This is Fastboot Mode)
Once you have done that, you should be promoted with a screen asking for your bootloader unlock key. Type it in and click Unlock and your bootloader should be unlocked now.

To relock, repeat the process of unlocking (click on BLU, connect in fastboot mode, and so on) but this time you will get an option to Relock. Click on it and your bootloader will be locked.

Now, continue reading if facing bootloop, like I did. It's common on our devices to face bootloop, but you can probably come out of it.
After unlocking, try to boot up your device. If not able to boot up, take out your battery. Connect your phone to the PC in Fastboot Mode.
Now relock bootloder. Boot back to Fastboot Mode and unlock it again.
Now flash Xperia E's Stock Full Firmware via Flashmode. Wait for it to flash. First boot might take a while, but hopefully you don't face bootloop / come out of it.

If this guide helped you, then please click thanks!
Any questions? Just ask them and I'll answer!

~SmashMii
Last edited by SmashMii; 20th March 2014 at 07:41 PM.
23rd March 2014, 05:43 PM   |  #2  
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Is the bootloader unlocked and locked again, I will be able to use the TrackID?
23rd March 2014, 07:07 PM   |  #3  
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Quote:
Originally Posted by KU3A98

Is the bootloader unlocked and locked again, I will be able to use the TrackID?

What?

Sent from my C1505 using XDA Premium 4 mobile app
23rd March 2014, 07:52 PM   |  #4  
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Quote:
Originally Posted by KU3A98

Is the bootloader unlocked and locked again, I will be able to use the TrackID?

No. Because your DRM key cannot be recovered since you unlocked your bootloader.

Sent from my ST21i using xda app-developers app
24th March 2014, 03:12 PM   |  #5  
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Quote:
Originally Posted by abstrkt1337

No. Because your DRM key cannot be recovered since you unlocked your bootloader.

Sent from my ST21i using xda app-developers app

Wait what ?
you mean to tell me that you cannot use trackID app after bootloader unlock??? i still have it & working good ...(i had made backup with titanium backup) @KU3A98
24th March 2014, 06:20 PM   |  #6  
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Quote:
Originally Posted by Grimlock007

Wait what ?
you mean to tell me that you cannot use trackID app after bootloader unlock??? i still have it & working good ...(i had made backup with titanium backup) @KU3A98

Only the version wich is provided in stock ROM not play store.

Sent from my ST21i using xda app-developers app
24th March 2014, 06:28 PM   |  #7  
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Quote:
Originally Posted by abstrkt1337

Only the version wich is provided in stock ROM not play store.

Sent from my ST21i using xda app-developers app

its the same right??? ...is there an update or something? ....If yes ,we could get the apk and share it here in themes section (since its a free app ,no worries,and since we own xperia we deserve it)

EDIT: just found it play store ...it shows there is an update(but never showed in my apps) ...updating now, will report in a few

EDIT: update successfull works perfectly!..no idea what you guys are talking about...
Last edited by Grimlock007; 24th March 2014 at 06:34 PM.

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