Database Develop

Confirmation on way to root

Can please someone confirm this will work?
1. Downgrade to JB 4.2.2 14.1.G.1.534
2. Install locked dualrecovery 2.7.97 BETA
3. Flash KK 4.4.0 14.3.A.0.681
4. Flash with CWM superSU
I am asking because I read somewhere the following method:
1. Flash KK 4.4.0
2. Unlock bootloader
3. Install CWM thru a very complicated procedure that requires fastboot
4. Flash with CWM supeSU
Now, my question is: since I could install dualrecovery for unlocked bootloader, to avoid ulocking bootloader, why not downgrade, flash dualrecovery, upgrade and flash su?

Can please someone confirm this will work?
1. Downgrade to JB 4.2.2 14.1.G.1.534 (and root it)
1.2 (Backup TA Partition !Important, for the future)
2. Install locked dualrecovery 2.7.97 BETA
3. Flash KK 4.4.0 14.3.A.0.681 (via recovery)
4. Flash with CWM superSU
'
'
this is OK,

Killer2k8 said:
Can please someone confirm this will work?
1. Downgrade to JB 4.2.2 14.1.G.1.534 (and root it)
1.2 (Backup TA Partition !Important, for the future)
2. Install locked dualrecovery 2.7.97 BETA
3. Flash KK 4.4.0 14.3.A.0.681 (via recovery)
4. Flash with CWM superSU
'
'
this is OK,
Click to expand...
Click to collapse
cool thanks...
wht point 1.2? Is this necessary for what? I am not going to unlock bootloader

thegios said:
cool thanks...
wht point 1.2? Is this necessary for what? I am not going to unlock bootloader
Click to expand...
Click to collapse
If you're not going to unlock your bootloader then do not do it. you can also backit up when you're running kitkat with root.
But what's the harm? )

Killer2k8 said:
If you're not going to unlock your bootloader then do not do it. you can also backit up when you're running kitkat with root.
But what's the harm? )
Click to expand...
Click to collapse
ok hold on a sec, I did not read carefulyy...
you are saying I need to downgrade and root, then flash dual recovery, upgrade and flash su
I thought I could avoid rooting after downgrading, cos I cannot download from anywhere any tool to root 14.1.G.1.534

thegios said:
ok hold on a sec, I did not read carefulyy...
you are saying I need to downgrade and root, then flash dual recovery, upgrade and flash su
I thought I could avoid rooting after downgrading, cos I cannot download from anywhere any tool to root 14.1.G.1.534
Click to expand...
Click to collapse
1.downgrade to .534 via flashtool
2.root it using this guide http://forum.xda-developers.com/showthread.php?t=2439328 (vroot / root360)
3.install recovery, reboot to recovery wipe everything
4.flash kk zip file via recovery and then the stripped ftf file via flashtool
5. you have a rooted kitkat
more info here
http://forum.xda-developers.com/showthread.php?t=2687443

Killer2k8 said:
1.downgrade to .534 via flashtool
2.root it using this guide http://forum.xda-developers.com/showthread.php?t=2439328 (vroot / root360)
3.install recovery, reboot to recovery wipe everything
4.flash kk zip file via recovery and then the stripped ftf file via flashtool
5. you have a rooted kitkat
more info here
http://forum.xda-developers.com/showthread.php?t=2687443
Click to expand...
Click to collapse
I cannot download vroot and root360, websites are not working

thegios said:
I cannot download vroot and root360, websites are not working
Click to expand...
Click to collapse
Use Bin4ry method, it's more safe.

eclyptos said:
Use Bin4ry method, it's more safe.
Click to expand...
Click to collapse
I was hoping it would be less complicated...
I still do not understand why I have to root after downgrading...
After all, all I need is a custom recovery to flash superSU, and according to the guide all I need to install a dual recovery is. 534, no need to root it or to unlock it, according to the guide.
So if I do not want to unlock device and I do not care backing up TA, the following should suffice
1. Downgrade to. 534 with flashtool
2. Install dual recovery for unlocked phones
3. Upgrade to kitkat with flashtool using an official ftf
4. Flash superSU with cwm

thegios said:
I was hoping it would be less complicated...
I still do not understand why I have to root after downgrading...
Click to expand...
Click to collapse
Because you need root to install recovery

http://forum.xda-developers.com/showthread.php?p=51318613
The post here is what I did straight from Kitkat. No downgrade necessary.
After doomlord kernel install, just install su.zip using recovery
Sent from my C6903 using xda app-developers app

silverfox013 said:
http://forum.xda-developers.com/showthread.php?p=51318613
The post here is what I did straight from Kitkat. No downgrade necessary.
After doomlord kernel install, just install su.zip using recovery
Sent from my C6903 using xda app-developers app
Click to expand...
Click to collapse
I understand this requires an unlocked bootloader

thegios said:
I understand this requires an unlocked bootloader
Click to expand...
Click to collapse
the problem is that I do not want to unlock bootloader...
it seems it is an endless loop: either you unlock the bootloader if you do not want to downgrade, or you downgrade first if you do not want to unlock

thegios said:
the problem is that I do not want to unlock bootloader...
it seems it is an endless loop: either you unlock the bootloader if you do not want to downgrade, or you downgrade first if you do not want to unlock
Click to expand...
Click to collapse
the easiest way imo is to just unlock the bootloader.
flash the kitkat ftf via flashtool as linked below
unlock the bootloader via sonys website http://unlockbootloader.sonymobile.com/
flash doomlords kernel + recovery http://forum.xda-developers.com/showthread.php?t=2632808
via flashtool http://www.flashtool.net/download.php
FLASH SUPERSU via cwm http://download.chainfire.eu/supersu
done simple no need for screwing around downgrading ect ect

thegios said:
the problem is that I do not want to unlock bootloader...
it seems it is an endless loop: either you unlock the bootloader if you do not want to downgrade, or you downgrade first if you do not want to unlock
Click to expand...
Click to collapse
Just try it, you seem to be wanting extremely specific instructions and questioning everything you are told. Please try following them them asking for help as you go along, you never know, it might just work for you....
There is no need to unlock the bootloader if you downgrade, root, install recovery and flash a pre rooted rom. Please tell me which step of these instructions say "unlock the boot loader"
Sent from my C6903 using XDA Premium 4 mobile app

gregbradley said:
Just try it, you seem to be wanting extremely specific instructions and questioning everything you are told. Please try following them them asking for help as you go along, you never know, it might just work for you....
There is no need to unlock the bootloader if you downgrade, root, install recovery and flash a pre rooted rom. Please tell me which step of these instructions say "unlock the boot loader"
Sent from my C6903 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
didnt say u mentioned to u lock... I simply said that I wanted to avoid it, but it seems there is no way out

Yes there is, you do not need to unlock the bootloader to root...
Sent from my C6903 using XDA Premium 4 mobile app

MON5TER said:
the easiest way imo is to just unlock the bootloader.
flash the kitkat ftf via flashtool as linked below
unlock the bootloader via sonys website http://unlockbootloader.sonymobile.com/
flash doomlords kernel + recovery http://forum.xda-developers.com/showthread.php?t=2632808
via flashtool http://www.flashtool.net/download.php
FLASH SUPERSU via cwm http://download.chainfire.eu/supersu
done simple no need for screwing around downgrading ect ect
Click to expand...
Click to collapse
I guess u r rite.. so I am gonna unlock: do I loose any sony feature? (audio plus, x reality, ...)
Also, since I do not have a custom recovery, I guess I will have to flash the kernel via fastboot, whi h will give me the ustom recovery, then flash superSU with the recovery
What do I need flashtool for?

gregbradley said:
Yes there is, you do not need to unlock the bootloader to root...
Sent from my C6903 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I know I know... all I wanted to say is: eithef I stay on KK and unlo k the bootloader to root, or I do not unlock but have to downgrade etc.
Unlocking at this point seems easier, safer and faster, as I will keep my current rom which works fine
I will do a backup with sony toll and restore afterwards

But once you downgrade, root and install recovery you just flash a pre rooted 4.4 rom... The one from NUT is made from a stock ftf file with the relevant root files added to it. I don't see the issue.
As for unlocking, read the information on the sony website about it. You have to unlock using that site anyway. You will lose warranty and drm keys. However, to be able to lock again you need to back up your TA partition otherwise you lose the drm keys forever. Now to do that you must have root, so you are going to have to downgrade and root anyway
Sent from my C6903 using XDA Premium 4 mobile app

Cheeky question

Is there a way to flash (using flashtool) a FTF of the latest ROM that has is rooted and has a customer recovery.
I'm on the latest update of 4.4.2 but am a little nervous about playing round too much in terms of loading recovery onto it. A flashtool flash would be much easier.
My bootloader is locked but I can unlock it. It previously was locked anyway but relocked to update to 4.4
Sent from my C6903 using XDA Premium 4 mobile app

You can flash the Recovery on Locked and Unrooted Android. Download TWRP .zip and Install. Now you have the recovery.
Also you can unlock bootlader and flash an Advanced Kernel with Implemented Recovery, Done.
BTW, before attempt to Unlock Bootlader I will recommend to Backup TA first, then Unlock.

eclyptos said:
You can flash the Recovery on Locked and Unrooted Android. Download TWRP .zip and Install. Now you have the recovery.
Also you can unlock bootlader and flash an Advanced Kernel with Implemented Recovery, Done.
BTW, before attempt to Unlock Bootlader I will recommend to Backup TA first, then Unlock.
Click to expand...
Click to collapse
Thank you sir, when you say download TWRP do you mean flash it with flashtool or install it on the phone as per a normal app?
Sent from my C6903 using XDA Premium 4 mobile app

you cannot flash anything other than FTF files in flashmode with flashtool, and you cannot make any changes to FTF files like you suggest
The way to get to a rooted 4.4.2 rom is this
Flash a FTF file ending in .534 using flashtool (Look in the mega collection thread)
Install dual recovery (Look in the cross device development section)
Flash a pre rooted 4.4.2 rom (Look in the development section)
All download and instructions will be in the OP of the relevant threads

gregbradley said:
.. and you cannot make any changes to FTF files like you suggest
Click to expand...
Click to collapse
..do I?

eclyptos said:
..do I?
Click to expand...
Click to collapse
I was speaking to the OP

[bricked xperia T] flashing stock firmware

hi guys! still with bricked phone...tried again to flash a stock firmware i got this error: (see screenshot) http://prntscr.com/3f935g
please help me

isko95 said:
hi guys! still with bricked phone...tried again to flash a stock firmware i got this error: (see screenshot) http://prntscr.com/3f935g
please help me
Click to expand...
Click to collapse
do you have drivers installed for your phone ?
and do you download the correct ftf for your phone & connect your phone to flashing mode by holding volume down button while connecting to USB cable

Ben Ling said:
do you have drivers installed for your phone ?
and do you download the correct ftf for your phone & connect your phone to flashing mode by holding volume down button while connecting to USB cable
Click to expand...
Click to collapse
installed flashmode driverse, fastboot drivers and all T drivers from flashtool.
of course downloaded the correct ftf for my device, and push the vol down while connecting. start flashing until halfway while flashing system.sin. tried more than 5 times always stops at that moment. i downloaded correctly the firmware

isko95 said:
installed flashmode driverse, fastboot drivers and all T drivers from flashtool.
of course downloaded the correct ftf for my device, and push the vol down while connecting. start flashing until halfway while flashing system.sin. tried more than 5 times always stops at that moment. i downloaded correctly the firmware
Click to expand...
Click to collapse
then try another ftf
or are you able to flash ftf previously ?

Ben Ling said:
then try another ftf
or are you able to flash ftf previously ?
Click to expand...
Click to collapse
already tried all android version for my device...before it was bricked, yes i could.

Ben Ling said:
then try another ftf
or are you able to flash ftf previously ?
Click to expand...
Click to collapse
anyone please help.

isko95 said:
installed flashmode driverse, fastboot drivers and all T drivers from flashtool.
of course downloaded the correct ftf for my device, and push the vol down while connecting. start flashing until halfway while flashing system.sin. tried more than 5 times always stops at that moment. i downloaded correctly the firmware
Click to expand...
Click to collapse
These drivers are for unlocked bootloaders have you unlocked your xt or tried to install a custom kernel. just a thought as there is as thread on the forum regarding a device thinking it is anther device and will not accept installation any stock ftf..

bruce1x said:
These drivers are for unlocked bootloaders have you unlocked your xt or tried to install a custom kernel. just a thought as there is as thread on the forum regarding a device thinking it is anther device and will not accept installation any stock ftf..
Click to expand...
Click to collapse
yes, the bootloader is unlocked. how can i install a custom kernel? i always knew that to have a custom kernel i have to flash it through recovery, and i dont have it. already tried to flash recovery through fastboot, it says i must have a rooted device

isko95 said:
yes, the bootloader is unlocked. how can i install a custom kernel? i always knew that to have a custom kernel i have to flash it through recovery, and i dont have it. already tried to flash recovery through fastboot, it says i must have a rooted device
Click to expand...
Click to collapse
You can flash custom kernel using Flashtool.

nlooooo said:
You can flash custom kernel using Flashtool.
Click to expand...
Click to collapse
if you mean flashing it through fastboot, i did it and says you must have a rooted device and fails. usually custom kernels are in .zip , but to flash a kernel it must have a .elf or .sin or .img format..how can i flash them?

isko95 said:
if you mean flashing it through fastboot, i did it and says you must have a rooted device and fails. usually custom kernels are in .zip , but to flash a kernel it must have a .elf or .sin or .img format..how can i flash them?
Click to expand...
Click to collapse
If you get that error with flashool than I'm not sure that bootloader is properly unlocked. DoomKernel is a flashable zip, bit inside the zip you have kernel.elf.

nlooooo said:
If you get that error with flashool than I'm not sure that bootloader is properly unlocked. DoomKernel is a flashable zip, bit inside the zip you have kernel.elf.
Click to expand...
Click to collapse
so if it says me your device must be rooted, the bootloader isnt unlocked? how can i check that it is really unlocked? because i unlocked it with flashtool while it was bricked, but flashtool said me it was successfully unlocked

isko95 said:
so if it says me your device must be rooted, the bootloader isnt unlocked? how can i check that it is really unlocked? because i unlocked it with flashtool while it was bricked, but flashtool said me it was successfully unlocked
Click to expand...
Click to collapse
If you can enter fastboot you can unlock it with code from Sony Mobile.

nlooooo said:
If you can enter fastboot you can unlock it with code from Sony Mobile.
Click to expand...
Click to collapse
i already did that as i said before

isko95 said:
i already did that as i said before
Click to expand...
Click to collapse
You said you did that with flashtool, I meant using adb and Sony code via fastboot:
fastboot.exe -i 0x0fce oem unlock 0xKEY

nlooooo said:
You said you did that with flashtool, I meant using adb and Sony code via fastboot:
fastboot.exe -i 0x0fce oem unlock 0xKEY
Click to expand...
Click to collapse
Ok, i will do it. but whats the difference?

isko95 said:
Ok, i will do it. but whats the difference?
Click to expand...
Click to collapse
I'm not sure but I think that there is.

nlooooo said:
I'm not sure but I think that there is.
Click to expand...
Click to collapse
there is what? i dont undestand. please explain

isko95 said:
there is what? i dont undestand. please explain
Click to expand...
Click to collapse
I don't think it's working in the same way.
Could you try without a thousand of questions, what can happen?

sorry for many questions, but i just wanna make sure to avoid any risk or worse problem. will try when i get home

A bricked Z1 with an unlocked bootloader

So I got my Z1 yesterday, was on 4.4.2 stock unrooted. I unlocked the bootloader using Sony's official website and fastboot, then I went on destroying the phone by flashing Philz touch recovery.img through fastboot.
And since then the phone has been bricked, I can only enter Fastboot through the blue led, while Flash mode doesn't show up any LED light and my PC sees the phone when on flashmode as n "S1 device with a parameter error".
I've tried all drivers, none worked, and the flashtool keeps suggesting I should update my drivers when connecting the phone on flash mode:
02/042/2014 22:42:11 - INFO - Device connected in flash mode
02/042/2014 22:42:30 - ERROR - Drivers need to be installed for connected device.
02/042/2014 22:42:30 - ERROR - You can find them in the drivers folder of Flashtool.
Click to expand...
Click to collapse
Is there any way I can recover from this through fastboot instead of the flashtool? I can still flash system.img and recovery.img through fastboot. I'd really appreciate any help right now.

Abu-7abash said:
So I got my Z1 yesterday, was on 4.4.2 stock unrooted. I unlocked the bootloader using Sony's official website and fastboot, then I went on destroying the phone by flashing Philz touch recovery.img through fastboot.
And since then the phone has been bricked, I can only enter Fastboot through the blue led, while Flash mode doesn't show up any LED light and my PC sees the phone when on flashmode as n "S1 device with a parameter error".
I've tried all drivers, none worked, and the flashtool keeps suggesting I should update my drivers when connecting the phone on flash mode:
Is there any way I can recover from this through fastboot instead of the flashtool? I can still flash system.img and recovery.img through fastboot. I'd really appreciate any help right now.
Click to expand...
Click to collapse
Xperia phones do not have a recovery partition to flash recovery to via fastboot.
If you can enter fastboot, then flash a stock kernel.elf with flashtool (In fastboot mode).
Then you can use flashtool to relock your boot (I imagine you have not even taken a TA backup and you are new to xperia devices, your post suggests so)
then you should be able to use pccompanion to repair, or flashtool to flash a FTF
However, by flashing a recovery image you may have bricked the phone. try what I have said, if it does not work get back in touch. (Do you have access to jtag and setool?)

gregbradley said:
Xperia phones do not have a recovery partition to flash recovery to via fastboot.
If you can enter fastboot, then flash a stock kernel.elf with flashtool (In fastboot mode).
Then you can use flashtool to relock your boot (I imagine you have not even taken a TA backup and you are new to xperia devices, your post suggests so)
then you should be able to use pccompanion to repair, or flashtool to flash a FTF
However, by flashing a recovery image you may have bricked the phone. try what I have said, if it does not work get back in touch. (Do you have access to jtag and setool?)
Click to expand...
Click to collapse
Can you link me to the files you suggested I try? There seems to be a truckload of them laying around the forum.
Also, yes, I am new to xperia phones. Didnt think they were this complicated to flash but I shouldnt have played with fastboot anyway. And no, sadly I dont have a jtag. Never needed one before.
Thanks for the help btw, I greatly appreciate this.

i dont think you have 100% installed the drivers, on windows 7 upwards you need to disable driver signature to allow any unsigned drivers to be installed

Look in the mega collection thread in the general section for a 442 ftf file. The kernel.elf will be in it
Sent from my C6903 using XDA Premium 4 mobile app

gregbradley said:
Look in the mega collection thread in the general section for a 442 ftf file. The kernel.elf will be in it
Sent from my C6903 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Alright, but how do I extract it from the TFT file?

gregbradley said:
Look in the mega collection thread in the general section for a 442 ftf file. The kernel.elf will be in it
Sent from my C6903 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
C6903_14.3.A.0.757_Global 1277-2880.ftf
Is this 4.4.2?

Ok here is an update; after messing with fastboot for so long and a couple of kernel flashes, I managed to boot the phone But now its stuck on the Sony logo.
A sign of hope though lies with the fact that I managed to enter recovery mode and found CWM hanging there. So now Im probably going to try ADB push a rom file to the SD and try to flash it through recovery instead.
@gregbradley

Sounds good. The reason forth hang at the sony logo will be that you have wiped the system partition. Flashing a rom based on the kernel you have will enable the phone to boot
Sent from my C6903 using XDA Premium 4 mobile app

gregbradley said:
Sounds good. The reason forth hang at the sony logo will be that you have wiped the system partition. Flashing a rom based on the kernel you have will enable the phone to boot
Sent from my C6903 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Would flashing a custom rom zip from the CWM recovery, fix the bootloop? Or could it also be a baseband/firmware issue too?
Im not really familiar with Sony's bootloader unlock process, does it allow kernel flash from recovery or only through fastboot ala Htc style?

Abu-7abash said:
Would flashing a custom rom zip from the CWM recovery, fix the bootloop? Or could it also be a baseband/firmware issue too?
Im not really familiar with Sony's bootloader unlock process, does it allow kernel flash from recovery or only through fastboot ala Htc style?
Click to expand...
Click to collapse
first flash original stock rom, than root your phone and install dualrecovery... and if u relock your bootloader unlock it again... don't try custom rom before this steps

Abu-7abash said:
Would flashing a custom rom zip from the CWM recovery, fix the bootloop? Or could it also be a baseband/firmware issue too?
Click to expand...
Click to collapse
Yes, as long as the .zip contains a kernel, or id based on the same kernel you have installed now
Im not really familiar with Sony's bootloader unlock process, does it allow kernel flash from recovery or only through fastboot ala Htc style?
Click to expand...
Click to collapse
Yes, if you have an unlocked bootloader

gregbradley said:
Yes, as long as the .zip contains a kernel, or id based on the same kernel you have installed nowYes, if you have an unlocked bootloader
Click to expand...
Click to collapse
Alright thanks, gonna give it a go once im home. And yes, I already unlocked the bootloader through Sony's website and fastboot before this happened.

Vuja1 said:
first flash original stock rom, than root your phone and install dualrecovery... and if u relock your bootloader unlock it again... don't try custom rom before this steps
Click to expand...
Click to collapse
It already has the dual recovery on it but for some reason its stuck in a bootloop.

Abu-7abash said:
It already has the dual recovery on it but for some reason its stuck in a bootloop.
Click to expand...
Click to collapse
do u have any rom on it or u just have bootloop? i u can't access to rom, u need with flashtool to flash stock rom, when u do that u loose your root and lose your dualrecovery... u need to root it again and install dualrecovery
second is
if u can access to rom instal ndr utility and reboot in clockwork mod recovery...
third option si to install via fastboot advanced doomloader kernel which has clockwork mod and has root... after that to flash custom rom but stock version of custom rom

Any of you guys know of a Stock rooted 4.4.4 rom that comes with the stock kernel in a flashable zip? I have looked everywhere for one but I cant find any.
@gregbradley @Vuja1

Abu-7abash said:
Any of you guys know of a Stock rooted 4.4.4 rom that comes with the stock kernel in a flashable zip? I have looked everywhere for one but I cant find any.
@gregbradley @Vuja1
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2761614
try this one

Vuja1 said:
http://forum.xda-developers.com/showthread.php?t=2761614
try this one
Click to expand...
Click to collapse
Already did, not really what Im looking for. I want the stock rom but only rooted and in a flashable zip, can't believe there aint any around.

Abu-7abash said:
Already did, not really what Im looking for. I want the stock rom but only rooted and in a flashable zip, can't believe there aint any around.
Click to expand...
Click to collapse
I can think of at least 3 in the development section off the top of my head...

gregbradley said:
I can think of at least 3 in the development section off the top of my head...
Click to expand...
Click to collapse
You can? Link me Greg..link me

[Q&A] [Tutorial] Xperia Z & ZL Bootloader Unlocking/Relocking

Q&A for [Tutorial] Xperia Z & ZL Bootloader Unlocking/Relocking
Some developers prefer that questions remain separate from their main development thread to help keep things organized. Placing your question within this thread will increase its chances of being answered by a member of the community or by the developer. Thanks for understanding and for helping to keep XDA neat and tidy! :smile:

4.4.4 Bootloader Unlock?
I have an Xperia Z C6616 (10.5.1.A.0.283) that I rooted using easy root via flashtool. However, in the service menu, it says I am unable to unlock the bootloader. Is this true? Will I be forced to flash back to 4.3 to unlock it?

japansam23 said:
I have an Xperia Z C6616 (10.5.1.A.0.283) that I rooted using easy root via flashtool. However, in the service menu, it says I am unable to unlock the bootloader. Is this true? Will I be forced to flash back to 4.3 to unlock it?
Click to expand...
Click to collapse
If it says you cannot unlock your bootloader, then you cannot unlock it at all, regardless of which firmware version is installed.
The C6616 bootloader is permanently locked because Bell requested it be that way and there's no way (either officially or unofficially) around it, unfortunately.
Sent from my C6603 using Tapatalk

If it says you cannot unlock your bootloader, then you cannot unlock it at all, regardless of which firmware version is installed.
The C6616 bootloader is permanently locked and there's no way (either officially or unofficially) around it, unfortunately.
Click to expand...
Click to collapse
Well thats incredibly frustrating. Is there any way then to flash new roms or install a recovery? Also, it might not matter, but before I updated to 4.4, it listed my model number as C6606.

Bootloader Issue
Hey guys, ran into a little issue. I flashed my phone with a stock ROM, C6603_10.3.A.0.423_Generic ES.ftf.
Figuring It'd be fine, I then proceeded to attempt to unlock my bootloader. However, this time after flashing this stock ROM, unlocking the bootloader would cause my phone to crash, resulting in having to reflash the stock rom again.
Any ideas?
Cheers.

Please help!
Hello, I need help with unlocking the bootloader for my Sony Xperia Z please. This is the first time I am doing this, so I am a extremely novice on these things. All I want is to flash the sony rom and install android 5 lollipop on my Xperia Z
I have done all the steps mentioned above but when I type the command fastboot.exe -I 0x0fce getvar version it just says waiting for device.
I don't know if my phone is even in fastboot mode. I have turned the developer mode on phone setting with USB debugging set to ON. When I connect my phone to the computer I press power and volume up for around 10 second before plugging in the USB. The phone vibrates 3 times and there is a sound in computer but nothing else happens. When I type the command adb devices, it shows no device attached.
I don't know if this is due to me not installing the drivers but I was tried to install Flashtool-drivers-1.5-20140318.exe file, the installation failed. So I went to advance startup setting and disable driver signing. It then installed. I also downloaded the fastboot package and clicked all the exe files. And my phone has its rooting status: Bootloader unlock allowed: Yes
Please help!

Kathmandu13 said:
I don't know if my phone is even in fastboot mode. I have turned the developer mode on phone setting with USB debugging set to ON. When I connect my phone to the computer I press power and volume up for around 10 second before plugging in the USB. The phone vibrates 3 times and there is a sound in computer but nothing else happens.
Click to expand...
Click to collapse
You're holding the wrong key combination.
Power your phone OFF first.
When the phone is off, hold volume UP only while connecting your device to your PC. Do not press the power button. The LED should light up blue when done correctly. You can then stop pressing the volume key.
Sent from my C6603

kingvortex said:
You're holding the wrong key combination.
Power your phone OFF first.
When the phone is off, hold volume UP only while connecting your device to your PC. Do not press the power button. The LED should light up blue when done correctly. You can then stop pressing the volume key.
Sent from my C6603
Click to expand...
Click to collapse
Oh Thank you so much! I think I unlocked the bootloader now
So what do I need to do now to install custom ROM?
If I understood correctly, I need to flash the current Sony ROM and install different one? Then again what is root? Is unlocking bootloader rooting? Also is the information on the forum up to date? because according to it the newest firmware is 10.3.1.A.0.244/10.3.1.A.2.67. But my firmware is 10.5.1.A.0.292. Please help, I tried finding these information but can't find them.

Kathmandu13 said:
Oh Thank you so much! I think I unlocked the bootloader now
So what do I need to do now to install custom ROM?
If I understood correctly, I need to flash the current Sony ROM and install different one? Then again what is root? Is unlocking bootloader rooting? Also is the information on the forum up to date? because according to it the newest firmware is 10.3.1.A.0.244/10.3.1.A.2.67. But my firmware is 10.5.1.A.0.292. Please help, I tried finding these information but can't find them.
Click to expand...
Click to collapse
In my own opinion, you shouldn't even unlock your bootloader without getting better known to the entire device and its ROMS/Kernels and etc.,
Anyway, I tink that you haven't made TA pratition backup even, and if I'm right, then you've erased your DRM keys forever without a way getting them back.
But if you have made TA partition backup, then we can proceed to explain next thing.
To flash a custom ROM, you don't have to flash newer nor older software version.
All you have to do is go to your favourite ROM thread and read the instructions very carefully, otherwise you're risking to brick/soft-brick your device.
But on different ROMs can be different flashing guides, for example, we can take "Validus" ROM:
VALIDUS
Flashing instructions are : (I'm going to quote them)
1. Make sure you have CWM installed and a working nandroid backup
2. Download the ROM.
3. Place the ROM on your SD-Card.
4.Extract boot.img included in zip and fastboot flash it via Flashtool or CMD
5. Reboot to recovery.
6. Wipe data-factory reset/cache partition/dalvik cache
7. Flash the ROM.
Optional- Flash GApps.
8. Reboot and Enjoy Validus!
Click to expand...
Click to collapse
So in overall, that mean at first you've to have CWM (ClockWorkMod Recovery) (but I think that it's not necessary if you would flash boot.img with it either way)
Secondly, you've to put the entire ROM in your SD Card (not in phone memory), you can include gapps as well,
Third, you need to extract the file named "boot.img" from the ROM which you've downloaded (Now i'm talking about VALIDUS and ONLY IF YOU'RE GOING TO INSTALL THIS ROM EXACTLY), but don't remove it from .rar/.zip.
After you've done everything what is written above, you can flash boot.img using the command prompt and fastboot file, which you were using to unlock your bootloader.
The command is this : fastboot flash boot boot.img
Then, write fastboot reboot and as soon as your LED will change color, push the volume up rocker and then you will be in recovery. After that, go to "Apply Update" --> "Choose from files" or sth (don't remember now), --> "Validus.zip/.rar". and optional you can flash gapps either.
And then pus the button to "Reboot now".
That's all - you've newest Validus build.
But the main point is that for example you would take Pabx rom, you'll have to do everything using CMD (fastboot)
PABX's ROM YUGA L
Look at yourself and compare everything.
Validus ROM is customized than Pabx ROM. It has more customatizations either : APPS, Control, Mods, Gesture and etc., and Pabx ROM is pure-stock L (I think).
I hope I anwered to all ur questions, if not - quote me

Thanks!
LaurynasVP said:
In my own opinion, you shouldn't even unlock your bootloader without getting better known to the entire device and its ROMS/Kernels and etc.,
Anyway, I tink that you haven't made TA pratition backup even, and if I'm right, then you've erased your DRM keys forever without a way getting them back.
But if you have made TA partition backup, then we can proceed to explain next thing.
To flash a custom ROM, you don't have to flash newer nor older software version.
All you have to do is go to your favourite ROM thread and read the instructions very carefully, otherwise you're risking to brick/soft-brick your device.
But on different ROMs can be different flashing guides, for example, we can take "Validus" ROM:
VALIDUS
Flashing instructions are : (I'm going to quote them)
So in overall, that mean at first you've to have CWM (ClockWorkMod Recovery) (but I think that it's not necessary if you would flash boot.img with it either way)
Secondly, you've to put the entire ROM in your SD Card (not in phone memory), you can include gapps as well,
Third, you need to extract the file named "boot.img" from the ROM which you've downloaded (Now i'm talking about VALIDUS and ONLY IF YOU'RE GOING TO INSTALL THIS ROM EXACTLY), but don't remove it from .rar/.zip.
After you've done everything what is written above, you can flash boot.img using the command prompt and fastboot file, which you were using to unlock your bootloader.
The command is this : fastboot flash boot boot.img
Then, write fastboot reboot and as soon as your LED will change color, push the volume up rocker and then you will be in recovery. After that, go to "Apply Update" --> "Choose from files" or sth (don't remember now), --> "Validus.zip/.rar". and optional you can flash gapps either.
And then pus the button to "Reboot now".
That's all - you've newest Validus build.
But the main point is that for example you would take Pabx rom, you'll have to do everything using CMD (fastboot)
PABX's ROM YUGA L
Look at yourself and compare everything.
Validus ROM is customized than Pabx ROM. It has more customatizations either : APPS, Control, Mods, Gesture and etc., and Pabx ROM is pure-stock L (I think).
I hope I anwered to all ur questions, if not - quote me
Click to expand...
Click to collapse
Thank you very much for your reply and yes perhaps you are right. I should not mess with my phone's software. My skill and knowledge on this is extremely limited. I think I did unlock my bootloader but I will leave it on that. My phone still runs fine for now. Unless I find some tutorial videos which I can understand, I will stay away from flashing my phone
Thanks again for help.

Kathmandu13 said:
Thank you very much for your reply and yes perhaps you are right. I should not mess with my phone's software. My skill and knowledge on this is extremely limited. I think I did unlock my bootloader but I will leave it on that. My phone still runs fine for now. Unless I find some tutorial videos which I can understand, I will stay away from flashing my phone
Thanks again for help.
Click to expand...
Click to collapse
Well, you shouldn't be afraid of flashing stock 5.0.x, as you're not flashing custom kernels. To flash pabx's rom, you just need to connect your phone via USB to PC, whilst holding Volum +. (Phone need to be turn on). Then blue led will show up and you're ready to write commands via CMD prompt, wich you can open in sdk/platform-tools/ (or simply download ADB and fastboot drivers).
To open them, just with holding RMB click on "open command prompt here", then write this command:
fastboot devices
Click to expand...
Click to collapse
And if it will show you like CXXXXXX (or something like that, if not even first letter is C, it's alright), you're ready to go.
Then download all files needed from Pabx site (ROM and gapps). Extract both in ADB-Fastboot driver's folder (in which are fastboot.exe, adb.exe). It should be these files: userdata.img, system.img, boot.img.
And then you just simple need to flash these IMGs:
fastboot flash userdata userdata.img
fastboot flash system system.img
fastboot flash boot boot.img
Click to expand...
Click to collapse
And then just type
fastboot reboot
Click to expand...
Click to collapse
.
Your phone will reboot and will load ~ 1-3 minutes.
Well, personally I don't encourge you to do that, I'm just suggesting. It's your choice to do that or not. I just have given you all the instructions.
Hope I helped you

Hi,
I have problem unlocking bootloader on my C6603. I successfully rooted it with easyroot, made TA backup, my phone says that unlocking bootloader is allowed but whenever i tried to do this it either fails or goes to bootloop. I was investigating a bit more and found some information saying that phone has to be simlock free with some certificates(???) and s1tool gives me answer that my simlock unlock is tampered. Is it the reason why i can't unlock bootloader? If so, is there any way to unlock it anyway?
Thanks in advance.
Sent from my C6603 using XDA Free mobile app

Unlocking Xperia Z bootloader
Hi guys
I 've got a trouble, i tried to unlock bootloader by flashtool and "classic" method. I've done it step by step like in video tutorial but finally cmd shows me that command.
I've checked it on other computer but it also failed.Installed all components + pc com.
Greetings.

Please someone tell me where is this goddamned "fastboot_with_Android_USB_file.rar" to download? It's almost four hours im searching everywhere to find it,but i can't.

Xperia Z2 stuck! help!!!
Hi guys, yesterday i tried to relock th bootloader of my xperia z2, and it was really easy, but now it doesn´t turn on, it´s stuck in flash mode, does anyone know what can i do to fix this? thanks a lot!

nikin101 said:
Hi guys, yesterday i tried to relock th bootloader of my xperia z2, and it was really easy, but now it doesn´t turn on, it´s stuck in flash mode, does anyone know what can i do to fix this? thanks a lot!
Click to expand...
Click to collapse
Did you relock while on a custom rom or kernel? Try flashing a stock FTF.
Sent from my C6603

kingvortex said:
Did you relock while on a custom rom or kernel? Try flashing a stock FTF.
Sent from my C6603
Click to expand...
Click to collapse
Yes, i think i did that. And how do i do that? And where can i download the stock FTF? Thanks, i'm new in this

nikin101 said:
Yes, i think i did that. And how do i do that? And where can i download the stock FTF? Thanks, i'm new in this
Click to expand...
Click to collapse
How to package and flash stock roms in FTF format
I wrote that guide for the Xperia Z, but the method is identical for the Z2. You will probably have to wipe data if you're coming from a custom rom.
Sent from my C6603

kingvortex said:
How to package and flash stock roms in FTF format
I wrote that guide for the Xperia Z, but the method is identical for the Z2. You will probably have to wipe data if you're coming from a custom rom.
Sent from my C6603
Click to expand...
Click to collapse
I can't find the words to thank you! I will try that today. Thanks a lot.

nikin101 said:
I can't find the words to thank you! I will try that today. Thanks a lot.
Click to expand...
Click to collapse
You're welcome.
Sent from my C6603