I already unlock boatloader. Can I go back to stock rom and relock my bootloader, flash back my TA backup and recieve OTA updates in future? Any guides on that pleaese? Thanks in advance...
dralex88 said:
I already unlock boatloader. Can I go back to stock rom and relock my bootloader, flash back my TA backup and recieve OTA updates in future? Any guides on that pleaese? Thanks in advance...
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Yes. Flash stock ftf first then relock bootloader. If you try to relock bootloader on custom rom it won't boot.
Sent from my C6833 using XDA Premium 4 mobile app
Yup, be sure to be on a stock ROM before you do it, and remember that you have to have root to restore TA. The standalone TA tool (from the cross dev section) restores and locks the bootloader, so no need to do it again in Flashtool after you've restored TA.
Worst case scenario: You restore TA and lock the bootloader and the device won't turn on, and all you get is a simple vibration and a blinking red light. Open Flashtool and unlock the bootloader again. This will happen if you're not on stock kernel (i.e you have recovery), so be sure to be on stock ROM w/ stock kernel.
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i need to restore xperia s to stock, currently it is unlocked boot loader, cwm recovery running ics 6.1.A.2.45 rooted.
the stock image requires flash tool that i am not sure i can use as have custom recovery.
will stock rom install stock recovery kernal etc i am having so many reboots and massive battery drain i think i will need to send for repair
Yes it will restore stock kernel
rhogz said:
Yes it will restore stock kernel
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what about stock recovery and will i be able yo install using flash tool as when an update was available it could not flash the official update because of modified kernal
To get official updates you need to relock your bootloader then repair via sus or pc companion.
rhogz said:
To get official updates you need to relock your bootloader then repair via sus or pc companion.
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thanks for getting back to me
so from where i am now to returning phone to stock first thing i need to do is to lock my bootloader?
then i can just flash the official stock rom yes?
brisuth said:
thanks for getting back to me
so from where i am now to returning phone to stock first thing i need to do is to lock my bootloader?
then i can just flash the official stock rom yes?
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if u want to flash via flashtool, you dont need to relock
but if ur using seus or pc companion u need to relock.
Go here : http://forum.xda-developers.com/showthread.php?t=1527159
It will help you relock your bootloader..
And if you just want to get to a custom rom, you can flash using latest version of flashtools.. Simply download a firmware and flash it via flashtool and you are back to stock
Harsh7689 said:
Go here : http://forum.xda-developers.com/showthread.php?t=1527159
It will help you relock your bootloader..
And if you just want to get to a custom rom, you can flash using latest version of flashtools.. Simply download a firmware and flash it via flashtool and you are back to stock
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so i can flash using flash tools with cw recovery
brisuth said:
thanks for getting back to me
so from where i am now to returning phone to stock first thing i need to do is to lock my bootloader?
then i can just flash the official stock rom yes?
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Yes first thing you need to do is relock your bootloader. After re-locking it you can repair it via SUS or PC companion, then you will have stock Kernel and Rom.
Thanks! :good:
HI guys,
After being a sammy boy for years, Sony's android development is still a deep forest for me with all its bootloaders and secret keys.
I've got a rooted 5.0.2 with twrp recovery and just read somewhere, that this is enough to flash a pre-rooted 5.1. Is this true? No unlocking of the BL nor putting the DRM keys at risk?
Have a nice day!
If the "pre-rooted" 5.1 zip is all stock and has stock kernel, then you're good to go. Custom kernel and custom ROM requires unlocking the bootloader.
All you have to do is, go on TWRP recovery, wipe everything and flash that "pre-rooted" STOCK zip WITHOUT exiting TWRP after the wipe.
@Koostis
V4LKyR said:
If the "pre-rooted" 5.1 zip is all stock and has stock kernel, then you're good to go. Custom kernel and custom ROM requires unlocking the bootloader.
All you have to do is, go on TWRP recovery, wipe everything and flash that "pre-rooted" STOCK zip WITHOUT exiting TWRP after the wipe.
@Koostis
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So as long as the bootloader stays locked, my DRM keys are safe? And flashing a rom through recovery will not unlock a bootloader in any way?
Koostis said:
So as long as the bootloader stays locked, my DRM keys are safe? And flashing a rom through recovery will not unlock a bootloader in any way?
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Nay.
So, I had my bootloader unlocked back when I was in kitkat (unsure whether I had version 4.4.2 or 4.4.4), but I had backed up my ta partition in case I wanted to relock the bootloader.
Fast forward to today, I am on lollipop (version 5.1.1) and I want to relock my bootloader. Note that I am on stock kernel.
Obviously enough, I have to restore my ta backup.
But I have some questions.
1)Do I have to downgrade to the android version the phone had when I took the ta backup, or I can simply flash the ta backup on my current android version?
2)During this procedure, does anything (such as data) get wiped?
3) Will I lose recovery during this procedure?
Mokiwipeout said:
So, I had my bootloader unlocked back when I was in kitkat (unsure whether I had version 4.4.2 or 4.4.4), but I had backed up my ta partition in case I wanted to relock the bootloader.
Fast forward to today, I am on lollipop (version 5.1.1) and I want to relock my bootloader. Note that I am on stock kernel.
Obviously enough, I have to restore my ta backup.
But I have some questions.
1)Do I have to downgrade to the android version the phone had when I took the ta backup, or I can simply flash the ta backup on my current android version?
2)During this procedure, does anything (such as data) get wiped?
3) Will I lose recovery during this procedure?
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1. no
2. shouldent be
3. if you are using recovery for locked bootloader then no
Dear experts. I have a (Indian)6802, it came preinstalled with 5.0.2, and reverted to official UK 4.4.4 with flashtools, rooted, flashed dual recovery, took TA backup and unlocked bootloader using adb commands that came with the unlock code in email, since flashtools (0.9××) returned with the error that z ultra is not supported.
Now I want to relock the bootloader and flash stock 5.1.1. Can I just flash the latest ftf with flash tools or update it using pc companion?
I tried relocking it with the latest flash tools but it again returned with an error that z ultra is not supported. I am not concerned with locking boot loader again, my only concern is, can I flash Official 5.1.1 without relocking the boot loader? Please help. Thank you.
Sent from my C6802 using Tapatalk
I unlocked bootloader in official method. I flashed twrp and magisk. but after the latest Global beta, I've somehow lost both TWRP and magisk. that said, my phone is no longer rooted and the stock recovery is back. now i want to relock my bootloader. I never installed any custom rom. My question is, how to relock bootloader, and, if i do relock will all my data get wiped? like system reset or something? if so, is there any way to avoid that while relocking?
flash an official miui fastboot rom using mi flashtool and choose the option to clean and lock.
as far as I remember there is an option to keep data but you can backup everything to your PC before flashing