Develop Bugs

Xperia ion Bootloader Unlocking & Relocking

Taken from [Tutorial] Xperia S/P/U/Sola Bootloader Unlocking & Relocking and modified slightly for the ion. I take no credit for this tutorial.
Quick tutorial for unlocking & relocking the bootloader of the Xperia ion.
This is the official way to unlock bootloader
Warning!
This procedure will wipe the /data partition of your phone, so you will loose all ur stored data, settings. SDCARD will NOT BE WIPED!!!
DRM keys WILL be lost forever
Why should I unlock the bootloader?
You can flash custom ROMs/Kernels.
You don't need to worry if the new firmware can be rooted or not as with unlocked bootloader you can always ROOT your device.
SE/Sony gives sneak-peaks/preview builds of latest OS which requires unlocked bootloaders, as they did with Xperia 2011 line (they had ICS alpha/beta), so who knows may be SE/Sony may give early builds of ICS (JellyBean???)
Most of this is taken from lollylost100's his tutorial from ARC thread (all credits for that concise tutorial go to him, i have elaborated on a few things and added device specific changes)
[ Before we begin unlocking bootloader ]
Get the IMEI code for your device: type *#06# in phone dialer to find it out, note only the digits (no dashes)
Download the fastboot package with usb drivers (alternate drivers if the ones in package dont work)
Make sure u have a windows PC with USB cable to connect the phone
Power down your phone and keeping the Volume Up button pressed connect the USB cable to PC this will trigger FASTBOOT mode and windows will start driver installation, extract the above package and point the driver install to that location (usb_driver) folder
Once drivers are installed just disconnect cable and power on device
[ how to unlock ] (official way)
Go to: http://unlockbootloader.sonymobile.com/ and read everything!
At the bottom click 'Start Unlocking the Bootloader'
First, you should confirm that it is possible to unlock the boot loader of your phone by checking the service menu. In your phone, open the phone dial pad and enter *#*#7378423#*#* to access the service menu.
In your phone, tap Service info > Configuration > Rooting Status. If Bootloader unlock allowed says Yes, then you can continue with the next step. If it says No, or if the status is missing, your device cannot be unlocked.
Click to expand...
Click to collapse
After you have verified that you can unlock bootloader, scroll to the bottom of the page and click "Continue"
You will get "Are you sure prompt" accept it by clicking "yes i am sure" (i assume that you have read an understood it)
Then accept the "legal terms"
Finally you will get a "Create Unlock request" page, enter your IMEI (sometimes the last digit needs to be removed for this to work), name and email address
You should now receive your unique unlock key, its displayed on screen, SAVE THIS KEY SAFELY
Extract fastboot_with_Android_USB_file.rar and open fastboot folder
Hold SHIFT and right click on the background of the folder
Select 'Open command window here'
Connect your phone in fastboot mode (turn phone off, hold Volume UP button and plug in USB Cable) [make sure drivers are installed as explained above)
In the cmd windows type in fastboot.exe -i 0x0fce getvar version
If a value is returned (it will return 0.5), it means the phone is correctly connected
Type in fastboot.exe -i 0x0fce oem unlock 0xKEY and replace KEY with the key which you received earlier.
Your device should now be bootloader unlocked
If this tutorial is too much for you then itskapil wrote a step-by-step guide (and recorded a video also):
-Instructions: http://www.theandroidsoul.com/how-to...-play-neo-pro/
-Video: http://www.youtube.com/watch?v=LRH3pC7MhEA
(the above videos and some steps are for Xperia 2011 devices, but most the steps are same for Xperia ion)
Info on Relocking bootloader is in next post

Relocking bootloader
RELOCKING BOOTLOADER WILL ALLOW YOU TO GET NEWEST UPDATES & REPAIR DEVICE USING SEUS/PCC
Before we begin relocking the bootloader make sure that u have flashtool download & installed
You can get the latest version of FlashTool from:
http://androxyde.github.com/Flashtool/
Download link is under "Installation" tab
If you have not use FlashTool before read this thread:
http://forum.xda-developers.com/showthread.php?t=1526866
Download this FTF:
Xperia ion -> LT28-ION_Relock_bootloader_Dogsly-TEST.ftf // Mirror 1
Flash this FTF via FlashTool:
When it says enter flashmode, power down device and keeping VOLUME DOWN button pressed connect usb cable to phone, the device will now enter flashmode (green LED)
After this file is flashed reboot phone
Bootloader will now be relocked!!!
Incase device doesn't boot DO NOT PANIC... You can flash stock firmware FTF anytime to get back to stock ROM
P.S.: there is no official way to relock bootloader

So because my phone says I can't unlock the bootloader, does that mean I can never unlock the bootloader? Or do I have to wait to be able to root it first?
PS: I got my ion from Best Buy so is that why? Will I ever be able to unlock the BL ? I've rooted and unlocked my x10, back in the old days lol but I'm just wondering if there's any difference with getting a phone from at&t directly or from the sony store and best buy.

Auggy99 said:
So because my phone says I can't unlock the bootloader, does that mean I can never unlock the bootloader? Or do I have to wait to be able to root it first?
Click to expand...
Click to collapse
Have to wait to see if another way to unlock the bootloader is discovered. Root and unlocking the bootloader are two different things that accomplish or allow different things you can do on the phone.
IE rooting allows you to uninstall system apps & bloatware, backup apps/data, make changes to build.prop etc. Unlocking the bootloader will give you access to fastboot so you can flash custom roms/kernels and other images such as a pre-rooted system image to gain root.

I wonder. If we can not unlock the bootloader for some LT28at, why is there a key to unlock it? I did the Sony bootloader unlock for fun and apparently they have a key for my LT28at even though it says bootloader unlock is not allowed.

Bach415 said:
I wonder. If we can not unlock the bootloader for some LT28at, why is there a key to unlock it? I did the Sony bootloader unlock for fun and apparently they have a key for my LT28at even though it says bootloader unlock is not allowed.
Click to expand...
Click to collapse
You can unlock bootloader on the LT28i and, accordingly, there is a file to be relock bootloader LT28i

dogsly said:
You can unlock bootloader on the LT28i and, accordingly, there is a file to be relock bootloader LT28i
Click to expand...
Click to collapse
I understand that works for lt28i but I'm referring to lt28at the us model of the ion and why there is a bootlloader unlock code when we can't unlock it.

see if it works

Has anyone with an ion that has
Bootloader unlock allowed says Yes
Click to expand...
Click to collapse
tried to unlock it via the sony site and if you did and it was successful have you tried to relock it using the file linked above? Would be nice to know if that works.

Possible fix?
If the LT28i can be unlocked, what if we flash the international firmware on our LT28at's and then do the LT28i method? Maybe a stupid question but this is the first phone I've had that's a challenge to do stuff like unlocking and rooting. My last phone (HTC Aria) was extremely easy.

SU1CiDE said:
If the LT28i can be unlocked, what if we flash the international firmware on our LT28at's and then do the LT28i method? Maybe a stupid question but this is the first phone I've had that's a challenge to do stuff like unlocking and rooting. My last phone (HTC Aria) was extremely easy.
Click to expand...
Click to collapse
Flashing firmwares does not change the ability to unlock the bootloader.

Spectre51 said:
Flashing firmwares does not change the ability to unlock the bootloader.
Click to expand...
Click to collapse
Kinda figured that

I tried to relock the bootloader. The flash pass but the phone can't turn on after that.
*I reflash the stock kernel again and the phone can power on now.
So here is the result, once you relock bootloader, you need to flash back the stock kernel in other to turn on the phone. Hopefully this will help those people who got stuck after relock bootloader.

Hello guys
I was just wondering, if bootloader unlock or flashing cutom kernel will allow to use sim cards from other mobile operators (European for ex.) ?
I have an ability to buy this device in us through my friend. but Im interested if I would be able to use it in Europe I was thinking of buying xperia p or s, but they dont have microsd card support.
Im not interested in using LTE networks. Just common 2g.
I planning to use it like a second android device as a multimedia player instead of my galaxy s wifi5.0. (because of good sound quality and other features).
Thanx a lot for responses

Assyle said:
Hello guys
I was just wondering, if bootloader unlock or flashing cutom kernel will allow to use sim cards from other mobile operators (European for ex.) ?
I have an ability to buy this device in us through my friend. but Im interested if I would be able to use it in Europe I was thinking of buying xperia p or s, but they dont have microsd card support.
Im not interested in using LTE networks. Just common 2g.
I planning to use it like a second android device as a multimedia player instead of my galaxy s wifi5.0. (because of good sound quality and other features).
Thanx a lot for responses
Click to expand...
Click to collapse
No. You can't unlock the bootloader of the lt28at and you can't sim unlock it either. Best bet is get an international version not one from the US.
Sent from my LT28at using Tapatalk 2

Spectre51 said:
No. You can't unlock the bootloader of the lt28at and you can't sim unlock it either. Best bet is get an international version not one from the US.
Sent from my LT28at using Tapatalk 2
Click to expand...
Click to collapse
ok. thanx
probably wait for Xperia acro S... probably will be sold in europe in nearest future.

Drivers aren't working for my device. The alternative drivers link isn't working. Can someone please upload the alternative drivers. Thank you.:good:

i'm sorry if it was mentioned, but i didn't find . is there a way to unlock the carrier already for lt28at ? i don't mind losing the lte.

apkraven said:
i'm sorry if it was mentioned, but i didn't find . is there a way to unlock the carrier already for lt28at ? i don't mind losing the lte.
Click to expand...
Click to collapse
I think you can switch the rom to international version but it will still be bootloader locked. Not sure about carrier
Sent from my Sony Xperia Ion

apkraven said:
i'm sorry if it was mentioned, but i didn't find . is there a way to unlock the carrier already for lt28at ? i don't mind losing the lte.
Click to expand...
Click to collapse
Read this thread: http://forum.xda-developers.com/showthread.php?t=1761578
Sent from my LT22i using Tapatalk 2

[Q] xperia arc s fastboot mode

HEllo,
Can I boot into fastmode if my xperia has an unlockable bootloader?
Thank you

rjpcardoso said:
HEllo,
Can I boot into fastmode if my xperia has an unlockable bootloader?
Thank you
Click to expand...
Click to collapse
Can. Turn-off phone, then press and hold "Menu" button. Connect phone to computer. The LED will turn to blue color. Now, it is in fastboot mode.

...

hyper200 said:
...
Click to expand...
Click to collapse
If you have nothing to say then don't post.

pc-ox said:
Can. Turn-off phone, then press and hold "Menu" button. Connect phone to computer. The LED will turn to blue color. Now, it is in fastboot mode.
Click to expand...
Click to collapse
are you sure about this? I don't seem to be able to.

BernardoCalhanas said:
are you sure about this? I don't seem to be able to.
Click to expand...
Click to collapse
Then your bootloader isn't unlocked.

Keypad, type in *#*#7378423#*#*, Service Info, Configuration
If you see this
Code:
Bootloader unlocked: Yes
or this
Code:
Bootloader unlock allowed: Yes
then you can enter fastboot mode.
If you see this
Code:
Bootloader unlock allowed: No
then you can not enter fastboot.
Anymore questions?

Fastboot problem!
--

Someguyfromhell said:
Keypad, type in *#*#7378423#*#*, Service Info, Configuration
If you see this
Code:
Bootloader unlocked: Yes
or this
Code:
Bootloader unlock allowed: Yes
then you can enter fastboot mode.
If you see this
Code:
Bootloader unlock allowed: No
then you can not enter fastboot.
Anymore questions?
Click to expand...
Click to collapse
hello,
i m using xperia arc s and having Bootloader unlock allowed: Yes
in flashtool 0.9.10.1 i flash my device completely, then i attach a phone for fastboot,
everything going right, but when i click Lighting ICON => fastboot => OK nothing happen
need your help urgent
thanks in advance

You have to make sure that your phone has unlocked bootloader, if it says "bootloader unlock allowed: yes" it doesn't mean your phone is unlocked, it only tells you that it can be unlocked.
If you have TrackID, try to play it, if it can be played, then the bootloader is still locked.
For unlocking, try the link below. And don't forget to thank them.
http://forum.xda-developers.com/showthread.php?t=1133650
I hope it help, Cheers

Bagne said:
You have to make sure that your phone has unlocked bootloader, if it says "bootloader unlock allowed: yes" it doesn't mean your phone is unlocked, it only tells you that it can be unlocked.
If you have TrackID, try to play it, if it can be played, then the bootloader is still locked.
For unlocking, try the link below. And don't forget to thank them.
http://forum.xda-developers.com/showthread.php?t=1133650
I hope it help, Cheers
Click to expand...
Click to collapse
Thanks bro,
But, i found that Xperia Ultimate HD can also install on Locked Boot loader
You can find it in Developer's Page
Q 16: Can I install this ROM on locked bootloader?
Yes. You can without Problems.
I use flash tool 0.9.10.1 & LuPus Kerenl
need help

er.mayankpatel said:
hello,
i m using xperia arc s and having Bootloader unlock allowed: Yes
in flashtool 0.9.10.1 i flash my device completely, then i attach a phone for fastboot,
everything going right, but when i click Lighting ICON => fastboot => OK nothing happen
need your help urgent
thanks in advance
Click to expand...
Click to collapse
Put your phone into fastboot mode first (turn off your phone, hold down menu button and then connect the USB cable, blue LED shall light on).
Bagne said:
You have to make sure that your phone has unlocked bootloader, if it says "bootloader unlock allowed: yes" it doesn't mean your phone is unlocked, it only tells you that it can be unlocked.
If you have TrackID, try to play it, if it can be played, then the bootloader is still locked.
For unlocking, try the link below. And don't forget to thank them.
http://forum.xda-developers.com/showthread.php?t=1133650
I hope it help, Cheers
Click to expand...
Click to collapse
Only original TrackID, provided with phone. The one from Play Store works with unlocked bootloader aswell.

Bagne said:
You have to make sure that your phone has unlocked bootloader, if it says "bootloader unlock allowed: yes" it doesn't mean your phone is unlocked, it only tells you that it can be unlocked.
If you have TrackID, try to play it, if it can be played, then the bootloader is still locked.
For unlocking, try the link below. And don't forget to thank them.
http://forum.xda-developers.com/showthread.php?t=1133650
I hope it help, Cheers
Click to expand...
Click to collapse
Thanks For the Reply,
But, i want to flash my phone with XPERIA Ultimate HD, and on the Developer's page someone ask the question
Q 16: Can I install this ROM on locked bootloader?
Yes. You can without Problems.
if Yes, then how can i do this???????????
Please help, i just love this ROM

er.mayankpatel said:
Thanks For the Reply,
But, i want to flash my phone with XPERIA Ultimate HD, and on the Developer's page someone ask the question
Q 16: Can I install this ROM on locked bootloader?
Yes. You can without Problems.
if Yes, then how can i do this???????????
Please help, i just love this ROM
Click to expand...
Click to collapse
Just DON'T install it. My Xperia Arc s is locked bootloader and i tried to install Ultimate HD Rom twice, but no hope after installation Sony logo stucks!
first time i solved it by using Update Service.
second time (NOW) still on Sony logo and Update Service isn't working, it says "You already have the latest software installed"
so for now I'm searching for a way to fix it

dark-shadow93 said:
Just DON'T install it. My Xperia Arc s is locked bootloader and i tried to install Ultimate HD Rom twice, but no hope after installation Sony logo stucks!
first time i solved it by using Update Service.
second time (NOW) still on Sony logo and Update Service isn't working, it says "You already have the latest software installed"
so for now I'm searching for a way to fix it
Click to expand...
Click to collapse
Thanks dear,
I think it happen due to you have not unlock the bootloader
the same thing done with me,
now i am trying to unlock my bootloader
Use this link :- http://forum.xda-developers.com/showthread.php?t=1034087
After try this, Please tell me how can you do this????
Thanks in Advance

Someguyfromhell said:
Put your phone into fastboot mode first (turn off your phone, hold down menu button and then connect the USB cable, blue LED shall light on).
Only original TrackID, provided with phone. The one from Play Store works with unlocked bootloader aswell.
Click to expand...
Click to collapse
Thanks For your reply,
I do the same what you tell, after putting my phone in fast boot then i do the things in Flashtool.
But nothing hapen
Please advice, what to do

er.mayankpatel said:
Thanks dear,
I think it happen due to you have not unlock the bootloader
the same thing done with me,
now i am trying to unlock my bootloader
Use this link :- http://forum.xda-developers.com/showthread.php?t=1034087
After try this, Please tell me how can you do this????
Thanks in Advance
Click to expand...
Click to collapse
Just SOLVED IT! :laugh:
I flashed stock firmware using flash tool
stock firmware link by a member in the forum: http://www.mediafire.com/?rhr59r4o6oarnfx
then::
1. rooted the device
2. installed CWM
3. wiped everything
4. installed UHD and choosing just one app to install
5. unticked reboot
6. wiped Dalvik Cache ONLY
7. reboot device from CWM
8. Enjoyed UHD

UHD is stock based so it will work on locked boot loader, if it doesnt then you're doing something wrongly.
Sent from my Xperia Arc S using xda premium

tangosierra_ said:
UHD is stock based so it will work on locked boot loader, if it doesnt then you're doing something wrongly.
Sent from my Xperia Arc S using xda premium
Click to expand...
Click to collapse
Not necessarily! choosing to install all the apps in the AROMA Installer causes sticking on Sony logo in locked bootloaders.

tangosierra_ said:
UHD is stock based so it will work on locked boot loader, if it doesnt then you're doing something wrongly.
Sent from my Xperia Arc S using xda premium
Click to expand...
Click to collapse
Thanks,
But, i flash my device with the following FTF file LT18i_4.1.B.0.587_(1254-2716).ftf
If the problem comes due to this file, then which one is suitable for my ARC S ????
Please reply

Unlocking bootloader on Xperia Arc S

Good Afternoon,
I want to install cyanogenmod 10.1 on my xperia arc S. tried to follow a tutorial, but when it came to the part of booting the device in recovery mode I found that my bootloader was locked. Apparently, on the Rooting Status it says: bootloader unlock allowed: NO. So, my question is, what should I do in order to unlock the bootloader and install the cyanogenmod. thank you vm for your time.
Bernardo.

BernardoCalhanas said:
Good Afternoon,
I want to install cyanogenmod 10.1 on my xperia arc S. tried to follow a tutorial, but when it came to the part of booting the device in recovery mode I found that my bootloader was locked. Apparently, on the Rooting Status it says: bootloader unlock allowed: NO. So, my question is, what should I do in order to unlock the bootloader and install the cyanogenmod. thank you vm for your time.
Bernardo.
Click to expand...
Click to collapse
Try this http://forum.xda-developers.com/showthread.php?t=1034087

izida said:
Try this http://forum.xda-developers.com/showthread.php?t=1034087
Click to expand...
Click to collapse
I'm having problems downloading the -32/64bit drivers

izida said:
Try this http://forum.xda-developers.com/showthread.php?t=1034087
Click to expand...
Click to collapse
http://www.theandroidsoul.com/how-to-unlock-bootloader-xperia-arc-play-neo-pro/
found this, but cannot get into fastboot

I'm pretty sure that if you are not allowed to unlock it, there is no way to unlock it.
Edit: Ok maybe i was wrong. Take a look at this Thread -> http://forum.xda-developers.com/showthread.php?t=2102783
Edit2: Found a guide...but looks like you have to pay to unlock it. http://forum.xda-developers.com/showthread.php?t=1896553

Keksdroid said:
I'm pretty sure that if you are not allowed to unlock it, there is no way to unlock it.
Edit: Ok maybe i was wrong. Take a look at this Thread -> http://forum.xda-developers.com/showthread.php?t=2102783
Edit2: Found a guide...but looks like you have to pay to unlock it. http://forum.xda-developers.com/showthread.php?t=1896553
Click to expand...
Click to collapse
then there is no free way of doing this?

Cant Unlock Bootloader
Dear Sir
i Have Done all Instructions But It shows failed pls find below details.. please hellp me as soon as possible
Dear syed h done all what you mentioned but it shows error.. please find bellow.. and please reply me as soon as possible...
Microsoft Windows XP [Version 5.1.2600]
C:\Documents and Settings\ssubramanian>cd desktop
C:\Documents and Settings\ssubramanian\Desktop>cd flash boot
C:\Documents and Settings\ssubramanian\Desktop\flash boot>cd fast boot
C:\Documents and Settings\ssubramanian\Desktop\flash boot\fast boot>cd fastboot
C:\Documents and Settings\ssubramanian\Desktop\flash boot\fast boot\fastboot>fas
tboot.exe -i 0x0fce getvar version
version: 0.3
finished. total time: -0.000s
C:\Documents and Settings\ssubramanian\Desktop\flash boot\fast boot\fastboot>fas
tboot.exe -i 0x0fce oem unlock 0xDDA4329E6C449072
(bootloader) Unlock phone requested
FAILED (remote: oem unlock failed!)
finished. total time: 0.016s

Check if you wrote the code correctly.

I too have a Sony Ericsson (pro) with bootloader unlock allowed: NO. I've scoured the Web and only come up with this site http://www.wotanserver.com/en/sony-ericsson/xperia-pro-mk16/unlock-tool/debranding-flash
Which claims that if I pay 7.99 euros I'll be able to unlock my bootloader. My question is what am I paying 7.99 for? What does this service give that can't be found out for free?

engmex said:
I too have a Sony Ericsson (pro) with bootloader unlock allowed: NO. I've scoured the Web and only come up with this site http://www.wotanserver.com/en/sony-ericsson/xperia-pro-mk16/unlock-tool/debranding-flash
Which claims that if I pay 7.99 euros I'll be able to unlock my bootloader. My question is what am I paying 7.99 for? What does this service give that I can't be found out for free?
Click to expand...
Click to collapse
It works only if your phone is manufactured before 12W11. Check it under the battery.

your phone it is simlock ? you ned unlocked the be able to unlock the bootloader

http://forum.xda-developers.com/show....php?t=2102783

I am having problems in unlocking my xperia arc s lt18i boot loader. I have tried every sungle method of unlocking bootloader. my phone shows Boot loader allowed: yes and it is not sim locked as well. I am using the correct IMEI code and I have got correct unlock code from sony and still I am getting error remote: oem unlock failed. Help!! Help!! Help!! Please!!!

shehrozlt18i said:
I am having problems in unlocking my xperia arc s lt18i boot loader. I have tried every sungle method of unlocking bootloader. my phone shows Boot loader allowed: yes and it is not sim locked as well. I am using the correct IMEI code and I have got correct unlock code from sony and still I am getting error remote: oem unlock failed. Help!! Help!! Help!! Please!!!
Click to expand...
Click to collapse
okay this problem have many other of my friends. in 99.9 % i requested a new code from sony website & it all worked :good:
also check in the cmd window if the divice is connected before trying to unlock!

bejunk said:
okay this problem have many other of my friends. in 99.9 % i requested a new code from sony website & it all worked :good:
also check in the cmd window if the divice is connected before trying to unlock!
Click to expand...
Click to collapse
Actually I have tried every single thing and everytime I ask for a new code I get the same code as before from sony and I have installed proper drivers as well because it states that my device is connected

shehrozlt18i said:
Actually I have tried every single thing and everytime I ask for a new code I get the same code as before from sony and I have installed proper drivers as well because it states that my device is connected
Click to expand...
Click to collapse
i dont be rude bro, but i had this situatzion atleast over 20 times here with friends or others from my country (then i done the job over teamviewer lol, what a pain in ass)
theres a simple calcultion which allways was right for me:
- service menu says: bootloader unlocked allowed: YES [x] (check:good
- installed all the drivers & stuff properly
(you say that cmd tells you device is connetced, so [x](check:good
if its then still not working, ITS 100%:
a human (your) fault.
- maybe request wrong code (99%)
- ???
i say that because i have friends which telled me same thing. they said "i read it thrice & requested code more than 5 times...... bla bla" - & those a were mostly smart people. (no n00bs)
guess what, after triyng help them for hours (!) over internet, i go to them next day & unlocked phone in 5 mins. lol
i dont know what they doing wrong. or why its not working. i only know if you do it carefully,patiently, read all & DO IT EXACTLY like stated it allways works. because its my way & it allways worked (even they say they done it same.)
but keep in mind that maybe your carrier locked it in some way. here in my country its not allowed for carriers. but idk how its in yr country

BernardoCalhanas said:
then there is no free way of doing this?
Click to expand...
Click to collapse
I know not

As of March 2015 is there any free way to unlock the bootloader if it is not allowed?

arpcpro said:
As of March 2015 is there any free way to unlock the bootloader if it is not allowed?
Click to expand...
Click to collapse
no. sorry

BernardoCalhanas said:
then there is no free way of doing this?
Click to expand...
Click to collapse
I really hope you found a way to unlock your bootloader. If not, go on this site, just provide your email, confirm email, type your emai number and they give you the code instantly: https://developer.sonymobile.com/unlockbootloader/
I did worked for my xperia arc. Good luck
---------- Post added at 09:45 ---------- Previous post was at 09:30 ----------
arpcpro said:
As of March 2015 is there any free way to unlock the bootloader if it is not allowed?
Click to expand...
Click to collapse
I really hope you found a way to unlock your bootloader. If not, go on this site, just provide your email, confirm email, type your emai number and they give you the code instantly: https://developer.sonymobile.com/unlockbootloader/
I did worked for my xperia arc. Good luck

[Q] How to know if the bootloader of my Xperia E (C1505) is properly unlocked?

Hi guys,
First post on this forum, so I apologize in advance if this is not the right section. I have an Xperia E phone and I'm following a guide I found on the net to install Cyanogenmod in it. In order to do it, I followed the official Sony guide to unlock the bootloader, they sent me the unlock code and I used fastboot to enter the code into the phone. After that, the phone got stuck in a bootloop and I had to use a program called Flashtool in order to flash the original ROM into the phone again.
Now, when I enter *#*#7378423#*#* on the phone's dial pad and go to "Service info > Configuration", I can see the following message:
Code:
Rooting status:
Bootloader unlock: Yes
:
The weird thing is every guide I've read on the net about unlocking Xperia devices claim the above message should be "Bootloader unlocked: Yes", so I'm slightly confused (note the difference between "unlock" in the above message and "unlocked"). I guess it is actually unlocked because I was able to use Sony's Flashtool to flash the original ROM, but some clarification on this would be useful since I'm planning to install Cyanogenmod and I wouldn't like to brick the phone by flashing a custom ROM on an unlocked phone.
Thanks in advance for any help!

I finally was able to install CM11 in the phone, so I guess the bootloader was unlocked after all. Now I'm having a couple of issues, but I'll open a new thread for that, since it's a different problem.
Regards.

Flash a new rom on Xperia M with locked bootloader

hello everyone i'm new to this flashing devices thing so be patient with me please
i have an Xperia M C1905 with locked bootloader and i can't seem to unlock it but i really want to flash new roms of Android 5 but i have no idea how to do so without CWM so can you please help me by telling me how or showing me a thread that does i will be forever thankful

can anyone please help me i still didn't get an answer for my problem pleaaaaaase

Hello, welcome to the Xperia M forums. I hope you manage to find what you are looking for here, however the device is a low activity device (namely due to the lack of locked bootloader recovery).
Firstly, please see if your device's bootloader can be unlocked. To do this please follow the steps I am about to post;
1) Open your phone dialer,
2) Type *#*#7378423#*#* (*#*#SERVICE#*#*),
3) Tap Service Info,
4) Tap Configuration,
5) Look to Rooting Status, it will show one of three statuses;
5.1) Rooting status 1; Bootloader unlock allowed: Yes (this means that you can unlock your bootloader).
5.2) Rooting status 2; Bootloader unlock allowed: No (this means that you can't unlock your bootloader).
5.3) Rooting status 3; Bootloader unlocked: Yes (this means that your bootloader is already unlocked).
If you have either status 1 or 3 you are able to install Android 5 onto your device.
Firstly you will have to have an unlocked bootloader, you can do this by following the official instructions by Sony here (skip this if your bootloader is unlocked).
Then use a ROM from the forums what is Android M based.
If you have status 2 however you are unable to install Android 5 onto your device I'm afraid.