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Do I need to relock the bootloader to use PC Companion for latest stock?

I want to go back to stock for now Xperia J, and do I need to relock the bootloader or just use SEUS/PC Companion to flash latest stock?
Thanks in advance.

If you are on a custom rom then you need to download the stock ftf file and flash it using flashtool to get PC Companion or SEUS to work.
You don't need to unlock bootloader.

Yes you need

fuser1337 said:
If you are on a custom rom then you need to download the stock ftf file and flash it using flashtool to get PC Companion or SEUS to work.
You don't need to unlock bootloader.
Click to expand...
Click to collapse
I'm asking about re-locking it, it is already unlocked. Can I have more opinions? I don't want to brick the phone.

download the ICS ftf, flash, then relock bootloader.

stranded.eu said:
I'm asking about re-locking it, it is already unlocked. Can I have more opinions? I don't want to brick the phone.
Click to expand...
Click to collapse
https://docs.google.com/file/d/0B_d8uWGbkaetSDFrcTNJLWVnNVU/edit?pli=1
Flash this via flashtool.
Credits to xperia.cz for this
First flash stock ftf or you will brick your phone

deleted

Yeah does it make any difference?

Just asking. I know it doesn't.
Sent from my ST26i using xda premium

Help me please
Steam. said:
download the ICS ftf, flash, then relock bootloader.
Click to expand...
Click to collapse
i cant flash my firmware for xperia miro...please tell me how to lock my bootloader and then flash my firmware

stranded.eu said:
I want to go back to stock for now Xperia J, and do I need to relock the bootloader or just use SEUS/PC Companion to flash latest stock?
Thanks in advance.
Click to expand...
Click to collapse
Sony PC companion requires locked bootloader to work bro.
Since you are already on unlocked bootloader, you can just download the ftf file you want and flash it using flashtool. Using flashtool you can flash firmwares on both locked and unlocked bootloaders

You need a locked bootloader and any stock ROM to update through PC companion.

andy_chon said:
i cant flash my firmware for xperia miro...please tell me how to lock my bootloader and then flash my firmware
Click to expand...
Click to collapse
um..download flashtool..connect your phone using flashmode..click on the bootloader button..it wil go through a process..then relock your bootloader..then click on thunder icon..select flashmode...browse the firmware location select it..then FLASH
JUST DONT SAY THANKS....HIT THANKS..!! BE HELPFULL

Canot update

hey guys help me my xperia L is rooted and on dextrodroid v3 i got firmware update .17 but when update it it rebootS and get back to the same version HELP:crying::crying::crying::crying::crying::crying::crying:

Lazynestor said:
hey guys help me my xperia L is rooted and on dextrodroid v3 i got firmware update .17 but when update it it rebootS and get back to the same version HELP:crying::crying::crying::crying::crying::crying::crying:
Click to expand...
Click to collapse
Do you have unlocked bootloader?
then issue is known,
read instruction on sony's bootloader unlock website:
"For customers that have unlocked the boot loader, please do not accept any over the air upgrades."
http://unlockbootloader.sonymobile.com/
Best way is to flash latest version's ftf.

mvv1277 said:
Do you have unlocked bootloader?
then issue is known,
read instruction on sony's bootloader unlock website:
"For customers that have unlocked the boot loader, please do not accept any over the air upgrades."
http://unlockbootloader.sonymobile.com/
Best way is to flash latest version's ftf.
Click to expand...
Click to collapse
No i dont have a unlocked bootloader !!

try to full unroot...

[Q] I need to relock bootloader and unroot to flash the stock rom?

1- Do I need to unroot the phone(xperia L) and relock the bootloader to flash the stock rom?
2-Does flashing the stock rom removes CWM(I want to remove it)?
Thank's in advance!

you can return to stock firmware using FLASH TOOL for xperia ( google it )
With this you can lock the bootloader but before that flash the stock rom @ http://forum.xda-developers.com/xperia-l/general/sony-xperia-l-flashable-ftfs-locked-t2560642
and yes flashing stock rom with FLASH TOOL will also remove CWM
hit thanks if that helped because today i also returned to stock rom

NG3000 said:
you can return to stock firmware using FLASH TOOL for xperia ( google it )
With this you can lock the bootloader but before that flash the stock rom @ http://forum.xda-developers.com/xperia-l/general/sony-xperia-l-flashable-ftfs-locked-t2560642
and yes flashing stock rom with FLASH TOOL will also remove CWM
hit thanks if that helped because today i also returned to stock rom
Click to expand...
Click to collapse
Well, i'l be using flashtool to flash the stock rom, but what i am asking, is if I need to relock bootloader to flash the stock rom, and i already have a unlocked bootloader

no you can flash it without locking

FIXED
Thank's, i have another question, can i update the system while the bootloader is unlocked?

LoddFern said:
FIXED
Thank's, i have another question, can i update the system while the bootloader is unlocked?
Click to expand...
Click to collapse
No,you won't recive ota and can't update phone using pc companion and sus.You can only update phone using flashtool by flashing a ftf with the system.

Xperia l update
Hello guys. I'm new to this forum and i have one simple question.
I have an Xperia L c2105 rooted and with unlocked bootloader. Today when I connected it to my pc i received a notification from PC Companion with an update. I couldn't update it because the program said that I have a modified software or something like that.
Can I update my phone without losing root and with the bootloader unlocked? If i flash the stock rom update do i lose root and my bootloader will be locked?
PS: Sorry for my english, i hope you can help me deal with this...:good:

C'mon guys no one can help me?
Sent from my C2105 using XDA Free mobile app

Ph3n0m3n said:
Hello guys. I'm new to this forum and i have one simple question.
I have an Xperia L c2105 rooted and with unlocked bootloader. Today when I connected it to my pc i received a notification from PC Companion with an update. I couldn't update it because the program said that I have a modified software or something like that.
Can I update my phone without losing root and with the bootloader unlocked? If i flash the stock rom update do i lose root and my bootloader will be locked?
PS: Sorry for my english, i hope you can help me deal with this...:good:
Click to expand...
Click to collapse
Firstly,updates via pc companion or SUS requires lock bootloader..if you have TA backup just restored it and it will be updated officially.
Second...Flashing new firmware will erased everything and your bootloader still will be unlocked if throu flashtool..
Third...when using flashtool, there are a few choices you can make like saving your data and etc but its recommended to wipe everything..
your data etc can be backup using 3rd party app..
The easiest way to root is using extended stock kernel v6 kernel..It has built in root and its binaries..

Thank you very much. I didn't save TA when I unlocked the bootloader so I assume that I can't get it locked. So in this case I will do the update trough flashtool. After flashing the update I will just restore root. Have a nice day
Sent from my C2105 using XDA Free mobile app

przemek4113 said:
No,you won't recive ota and can't update phone using pc companion and sus.You can only update phone using flashtool by flashing a ftf with the system.
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Click to collapse
i have backed up drm using backup ta and a zip file is also saved now when i try to restore some error is coming like protcol fault(read error) please help me how to overcome this problem

back to stock rom

hey guys i want to completely back to stock rom..my phone bootloader unlocked and of course rooted aswell .. so my question is what the first step to do it relock the bootloader first or flash stock rom first??

paradoxgogo said:
hey guys i want to completely back to stock rom..my phone bootloader unlocked and of course rooted aswell .. so my question is what the first step to do it relock the bootloader first or flash stock rom first??
Click to expand...
Click to collapse
first flash a .ftf for locking bootloader,
goto this page and find "bootloader relock"
http://forum.xda-developers.com/xperia-j-e/general/xperia-jst26i-roms-kernels-mods-how-tos-t2237164
then use PC compansion or Update Service to reset your phone to the latest stock rom

lhkakex said:
first flash a .ftf for locking bootloader,
goto this page and find "bootloader relock"
http://forum.xda-developers.com/xperia-j-e/general/xperia-jst26i-roms-kernels-mods-how-tos-t2237164
then use PC compansion or Update Service to reset your phone to the latest stock rom
Click to expand...
Click to collapse
so i dont need my flash my backup stock rom???

Relock bootloader through Flashtool, click on "BLU" and relock. After that flash the right stock .ftf file, so you'll have locked and unrooted device. Like just buy.
Sorry for English..
Sent from my C1605 using XDA Free mobile app

[Q] Stock recovery image

Hey there,
does someone know, if there is the stock recovery image (for original firmware updates) available?
Thanks for your answers.

No there is not. Xperia devices do not have a stock recovery that you can access

But I can't update the stock firmware with custom recoveries.

PinguBene said:
But I can't update the stock firmware with custom recoveries.
Click to expand...
Click to collapse
Yes you can, use flashtool.net to flash a FTF
Or PCCompanion to update if you have not unlocked the bootloader.