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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.
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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

[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?
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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

[Q] Xperia L Custom kernel question.

Hi guys, i got an xperia l rooted, with unlocked bootloader, phone. I have flashed custom kernel. I would really like to go back to the stock version of my phone (i mean i wanna flash the stock kernel with no CWM and stuff and relock bootloader and unroot). Would any of you like to help me out with this? Thanks in advance!

GiwrgosP- said:
Hi guys, i got an xperia l rooted, with unlocked bootloader, phone. I have flashed custom kernel. I would really like to go back to the stock version of my phone (i mean i wanna flash the stock kernel with no CWM and stuff and relock bootloader and unroot). Would any of you like to help me out with this? Thanks in advance!
Click to expand...
Click to collapse
Just flash ftf and you're back as stock

just flash the ftf of your version, root it, then restore your TA backup, then unroot. STOCKED NOW!

Thanks for your reply. I got some questions. I have 15.3.A.1.14 but in pc companion shows that i have the older one. If i flash the ftf ( http://forum.xda-developers.com/xperia-l/general/sony-xperia-l-flashable-ftfs-locked-t2560642 ) 15.3.A.1.14 will everything be ok? And when i flash this ftf will i have stock kernel, rom and everything? Could you please tell me step by step what to do because im a little bit confused and i dont wanna do a fool mistake and destroy my device Thanks in advance.

GiwrgosP- said:
Thanks for your reply. I got some questions. I have 15.3.A.1.14 but in pc companion shows that i have the older one. If i flash the ftf ( http://forum.xda-developers.com/xperia-l/general/sony-xperia-l-flashable-ftfs-locked-t2560642 ) 15.3.A.1.14 will everything be ok? And when i flash this ftf will i have stock kernel, rom and everything? Could you please tell me step by step what to do because im a little bit confused and i dont wanna do a fool mistake and destroy my device Thanks in advance.
Click to expand...
Click to collapse
You can flash the firmware provided that it's actually the same as the name says. Just perform a clean flash, root your device, restore TA backup and again flash. Your device will come back to the default state.
Hit thanks if it worked

Is there a way to root on 23.0.1.A.5.77??

Is there a way to root on 23.0.1.A.5.77 build?? using d6603...because im having trouble flashing the ftf of previous version

No if you don't unlock your bootloader.

freddy1991 said:
No if you don't unlock your bootloader.
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Click to collapse
i have flashed previous ftf unlocked bootloader.... didn't wanna do that but had to ...thanks to weird developers of sony , now next thing im gonna do is to flash a recovery, im rooted now...and install an aosp rom.....

greatgrandking said:
i have flashed previous ftf unlocked bootloader.... didn't wanna do that but had to ...thanks to weird developers of sony , now next thing im gonna do is to flash a recovery, im rooted now...and install an aosp rom.....
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What do you mean by an unlocked bootloader ftf... There is no such thing. And flashing a ftf had no effect on the bootloader at all

Question Flashing ROM with Lock Bootloader

Hi I’m complete newbie , earlier I experience bootloop then I saw a blog that if I wipe data using stock recovery the problem will be solve but its not. So is there a chance that I can flash stock ROM with lock bootloader? Thanks in advance if someone will answer.

Yes it's called stock rom so you can flash with locked bootloader
But if is a custom rom you can't

vip57 said:
Yes it's called stock rom so you can flash with locked bootloader
But if is a custom rom you can't
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Click to collapse
How can I flash stock rom with lock bootloader sir ? what tool should I use ? TIA sir

Xiaomi flash tool

You can't flash anything with locked bootloader, not even stock rom.

if your bootloader is locked you can't do anything. After you setup a phone you must turn on usb debugging for future purposes like your problem right now.