[Q] Unlocking/Re-locking Bootloader - G 2014 Q&A, Help & Troubleshooting

I used to own an Xperai Sola. Before unlocking the bootloader I didn't know that I had to backup the DRM keys so that I can get back the "Bravia Engine" and "Download music Info option for Walkman" after the bootloader was unlocked. The information that we can backup our DRM keys came 6 months after I unlocked my bootloader.
These are my questions:
On Moto G 2nd gen do we need to backup something similar like the DRM keys of Xperia Sola?
What function do we lose when we unlock the bootloader other than Warranty? Does OS/Android update still work?
Does re-locking bootloader takes the phone back to its previous unlocked state?
@Falcon G
@vinaybaboo
@bhavin192

2. You can update phone after unlocking bl if you don't make changes to OS i.e. Xposed etc.
If you update even you have made changes to OS your phone will go into Bootloop
3. Yes Re locking and flashing stock firmware takes it to locked state
@NWKENT can answer this Questions more clearly

I´m also with similar doubts. I came from Samsung-way of unlocking bootloader.
Just to ensure if get it right, If I just put root on device, I still be able to update original rom from Motorola ?
It´s a pity we can change anything with xposed (in order to keep upgradable), bcos it´s small things we get used to, and we miss on stock roms...
Thanks,

leandrocn said:
I´m also with similar doubts. I came from Samsung-way of unlocking bootloader.
Just to ensure if get it right, If I just put root on device, I still be able to update original rom from Motorola ?
It´s a pity we can change anything with xposed (in order to keep upgradable), bcos it´s small things we get used to, and we miss on stock roms...
Thanks,
Click to expand...
Click to collapse
Thanks for your input.
Please @NWKENT @Falcon G @vinaybaboo can you kindly answer this question?

I guess if you wipe data and unnistall xposed and then flash stock recovery, you will be able to flash via OTA. No need to unroot

pleomaxell said:
I used to own an Xperai Sola. Before unlocking the bootloader I didn't know that I had to backup the DRM keys so that I can get back the "Bravia Engine" and "Download music Info option for Walkman" after the bootloader was unlocked. The information that we can backup our DRM keys came 6 months after I unlocked my bootloader.
These are my questions:
On Moto G 2nd gen do we need to backup something similar like the DRM keys of Xperia Sola?
What function do we lose when we unlock the bootloader other than Warranty? Does OS/Android update still work?
Does re-locking bootloader takes the phone back to its previous unlocked state?
@Falcon G
@vinaybaboo
@bhavin192
Click to expand...
Click to collapse
pleomaxell said:
Thanks for your input.
Please @NWKENT @Falcon G @vinaybaboo can you kindly answer this question?
Click to expand...
Click to collapse
1. No you don't need any DRM keys
2. U lose nothing rather than your warranty. Ota works if you don't install custom recovery and change the kernel
3. The new locked state is different than the OEM locked one

Falcon G said:
1. No you don't need any DRM keys
2. U lose nothing rather than your warranty. Ota works if you don't install custom recovery and change the kernel
3. The new locked state is different than the OEM locked one
Click to expand...
Click to collapse
Falcon G, thanks a lot for replying.
If the new locked state is different than the OEM locked one, then if a user wants to unlock the phone a second time, does he follow the same method he used to unlock the first time?
So, once the phone has been unlocked it is not possible to lock the phone to back to its OEM locked state?

pleomaxell said:
Falcon G, thanks a lot for replying.
If the new locked state is different than the OEM locked one, then if a user wants to unlock the phone a second time, does he follow the same method he used to unlock the first time?
So, once the phone has been unlocked it is not possible to lock the phone to back to its OEM locked state?
Click to expand...
Click to collapse
Yes you will be able to unlock the device.
And no you cannot get back to the original oem locked state

Related

Questions From a Would be Owner

Hello guys,
Just a few questions so I know what I am getting into
1) The phone can be rooted. However, if i want to run on a custom ROM or use mods such as the music mod, I would have to unlock the bootloader, yes?
2) Once the bootloader is unlocked, I would lose the 'Bravia Engine' feature of the phone. What else will I lose? For those who have lost it, is the trade off, of being able to run Custom ROMs and mods while losing the 'Bravia Engine' feature worth it?
3) If I have to send the phone for warranty, I could just re-lock the bootloader and send it back for warranty. Is there a chance somehow that they'll reject the phone if they detected that the phone's bootloader was tempered with?
arvin2212 said:
Hello guys,
Just a few questions so I know what I am getting into
1) The phone can be rooted. However, if i want to run on a custom ROM or use mods such as the music mod, I would have to unlock the bootloader, yes?
Click to expand...
Click to collapse
no
arvin2212 said:
Hello guys,
Just a few questions so I know what I am getting into
2) Once the bootloader is unlocked, I would lose the 'Bravia Engine' feature of the phone. What else will I lose? For those who have lost it, is the trade off, of being able to run Custom ROMs and mods while losing the 'Bravia Engine' feature worth it?
Click to expand...
Click to collapse
No clue since mine isn't/can't be unlocked. The only reason for me to unlock the BL (Even though it can't be done) would be, to flash a custom kernel, beside that I don't see any other reasons why I should unlock it.
arvin2212 said:
Hello guys,
Just a few questions so I know what I am getting into
3) If I have to send the phone for warranty, I could just re-lock the bootloader and send it back for warranty. Is there a chance somehow that they'll reject the phone if they detected that the phone's bootloader was tempered with?
Click to expand...
Click to collapse
Once it's unlocked there is no way back.
So if you want to root your phone, use custom roms (without custom kernels) you don't need to unlock the bootloader.
Dsteppa said:
no
No clue since mine isn't/can't be unlocked. The only reason for me to unlock the BL (Even though it can't be done) would be, to flash a custom kernel, beside that I don't see any other reasons why I should unlock it.
Once it's unlocked there is no way back.
So if you want to root your phone, use custom roms (without custom kernels) you don't need to unlock the bootloader.
Click to expand...
Click to collapse
Thank you very much for the reply.
I assumed as such from reading some posts initially, but then I went to the ROM section (If i am not mistaken) and there is a post on how to unlock the bootloader and then there is the Why section where it says that you could then use custom ROMs and mods which then confused me.
If i can use custom roms and mods without unlocking the bootloader, then I'll definitely be getting this phone.
I'll take advantage of this thread to ask one simple question: once we rooted the XZ and flash the Mods we find useful, we no longer get updates from the official Sony firmware in the future, right?
labroste said:
I'll take advantage of this thread to ask one simple question: once we rooted the XZ and flash the Mods we find useful, we no longer get updates from the official Sony firmware in the future, right?
Click to expand...
Click to collapse
First backup your firmware with http://forum.xda-developers.com/showthread.php?t=2188129
You can go back at any time to your original firmware and you can have the updates via pcc or sus.
Sent from my C6602 using xda premium

[Q] Unlock bootloader and camera question

Hi guys I'm considering to purchase the Z1 beocz I lose my precious Xperia S a week ago :crying: (very very sad, really love it)
As I'm those type who will definitely root the device and probably unlock it some time later, I really care about the camera problem.
I read the the DoomLord thread which told us to backup the "TA" thing before unlocking the bootloader, so we can restore it and have the camera working again.
May I ask what the "TA" actually is?? how can I backup that thing??
So after I retore it, is the bootloader still unlocked??
If i screw up the TA thing, can I relock the bootloader and save the camera by the official repair function in Sony Update Service??
Sorry I'm noobish but plz explain these things to me thank you!!
BTW, are there something i should consider before i buy the phone?? Is it the right time to buy it??
thank you
Its a partition on the device called trim area.
There is a thread about backing it up and its very easy to do.
If you do not have a TA backup then relocking the bootloader will NOT fix the camera.
Also, do not restore someone elses TA it will hard brick your phone
gregbradley said:
Its a partition on the device called trim area.
There is a thread about backing it up and its very easy to do.
If you do not have a TA backup then relocking the bootloader will NOT fix the camera.
Also, do not restore someone elses TA it will hard brick your phone
Click to expand...
Click to collapse
How if I repair the phone with update service after relocking the BL?
And after I restore the TA, is the bootloader still unlocked??
I'm wondering if there's possible to keep both bootloader unlocked and the 20mp camera working...
KWOKSFUNG said:
How if I repair the phone with update service after relocking the BL?
And after I restore the TA, is the bootloader still unlocked??
I'm wondering if there's possible to keep both bootloader unlocked and the 20mp camera working...
Click to expand...
Click to collapse
Restoring TA relocks the bootloader
There is no way to have an unlocked bootloader and working stock camera
I'm getting a little confused!
After rooting + custom recovery + custom ROM, can I restore my TA to get the camera back? Obviously would like to keep root and the custom ROM.
Sent from my Nexus 4 using Tapatalk
amm009uk said:
I'm getting a little confused!
After rooting + custom recovery + custom ROM, can I restore my TA to get the camera back? Obviously would like to keep root and the custom ROM.
Sent from my Nexus 4 using Tapatalk
Click to expand...
Click to collapse
Depends on whether the custom ROM requires an unlocked bootloader. Some custom ROMs don't need your bootloader to be unlocked. So that means you can still have root + custom recovery (which don't need unlocked bootloader) + custom ROM, and your bootloader is still unlocked and your camera is still working.
But if the custom ROM requires an unlocked bootloader, then restoring the TA will result in the bootloader being relocked, which means your ROM no longer working.
Someone correct me if I'm wrong.
hush66 said:
Depends on whether the custom ROM requires an unlocked bootloader. Some custom ROMs don't need your bootloader to be unlocked. So that means you can still have root + custom recovery (which don't need unlocked bootloader) + custom ROM, and your bootloader is still unlocked and your camera is still working.
But if the custom ROM requires an unlocked bootloader, then restoring the TA will result in the bootloader being relocked, which means your ROM no longer working.
Someone correct me if I'm wrong.
Click to expand...
Click to collapse
you mr are just spot on.. absolutely correct.
hush66 said:
Depends on whether the custom ROM requires an unlocked bootloader. Some custom ROMs don't need your bootloader to be unlocked. So that means you can still have root + custom recovery (which don't need unlocked bootloader) + custom ROM, and your bootloader is still unlocked and your camera is still working.
But if the custom ROM requires an unlocked bootloader, then restoring the TA will result in the bootloader being relocked, which means your ROM no longer working.
Someone correct me if I'm wrong.
Click to expand...
Click to collapse
Fantastic thanks. Hope Sony get round to fixing this soon.
Sent from my Nexus 4 using Tapatalk
hush66 said:
Depends on whether the custom ROM requires an unlocked bootloader. Some custom ROMs don't need your bootloader to be unlocked. So that means you can still have root + custom recovery (which don't need unlocked bootloader) + custom ROM, and your bootloader is still unlocked and your camera is still working.
But if the custom ROM requires an unlocked bootloader, then restoring the TA will result in the bootloader being relocked, which means your ROM no longer working.
Someone correct me if I'm wrong.
Click to expand...
Click to collapse
u mean " So that means you can still have root + custom recovery (which don't need unlocked bootloader) + custom ROM, and your bootloader is still [[[locked]]] and your camera is still working " ? other than that thnx u clarified things up to me so much
noobs master said:
u mean " So that means you can still have root + custom recovery (which don't need unlocked bootloader) + custom ROM, and your bootloader is still [[[locked]]] and your camera is still working " ? other than that thnx u clarified things up to me so much
Click to expand...
Click to collapse
Basically you can only use roms based on official firmware for now (and have a working camera) afaik. All the roms in the original development area (based on AOSP, custom kernels) required unlocked bootloader and as a result have a non-working camera.

I need help! I unlocked my bootloader and rooted my phone. But "Rooting stat Unknown"

I need help! I unlocked my bootloader and rooted my phone. But "Rooting stat Unknown"
Well now I know that I made a big mistake. I guess that sony made a hard brick in my phone. I am not sure if i will be able to unlock my bootloader again and I need information about it. I lost my DRM Keys and I can't take pictures, so It's driving me crazy.
Can I use a back up of DRM Keys from another locked Z3+?
Iyagui said:
Well now I know that I made a big mistake. I guess that sony made a hard brick in my phone. I am not sure if i will be able to unlock my bootloader again and I need information about it. I lost my DRM Keys and I can't take pictures, so It's driving me crazy.
Can I use a back up of DRM Keys from another locked Z3+?
Click to expand...
Click to collapse
You can't use drm keys from another phone. Plus you need root to backup your keys. And you cannot root z3+ without unlocking the bootloader first. Ive unlocked my bootloader. I have zero issues. Everything works great. What exactly did you do?
pikeylfc said:
You can't use drm keys from another phone. Plus you need root to backup your keys. And you cannot root z3+ without unlocking the bootloader first. Ive unlocked my bootloader. I have zero issues. Everything works great. What exactly did you do?
Click to expand...
Click to collapse
Not is my case. I rooted and later I touched "My xperia protection" and the phone didn't respond any more. Later I understood that it was a big mistake. I had to restore my phone with sony companion and now I don't have unlocked my phone and I can't root it , again. And also I lost all my DRM keys, so my camera is a disaster. I'm not sure about if I could restore the original state of the phone, locked but with the posiblity of unlocked again. My rooting status is Unknown.

How to go back to stock and relock the Bootloader?

Hello
i have to sell my device so i want to get it to stock again.
My current Setup:
Bootloader Unlocked, Stock Recovery, Rooted with Magisk, Stock ROM 9.0.0.283
What are the Steps to go Back to Stock and wipe everything?
Ive read that if the bootloader relock again it is not able to unlock the second time? Is this correct? I want to get the Unlock Code to the person who buy it but if its real, he cant use the code anymore..
anyway is it possible to do the job with the Stock E-Recovery in the current state of my phone? Without bootloader Relocked? Or is it necessary to relock the bootloader again?
Thank you very much
blackst225 said:
Hello
i have to sell my device so i want to get it to stock again.
My current Setup:
Bootloader Unlocked, Stock Recovery, Rooted with Magisk, Stock ROM 9.0.0.283
What are the Steps to go Back to Stock and wipe everything?
Ive read that if the bootloader relock again it is not able to unlock the second time? Is this correct? I want to get the Unlock Code to the person who buy it but if its real, he cant use the code anymore..
anyway is it possible to do the job with the Stock E-Recovery in the current state of my phone? Without bootloader Relocked? Or is it necessary to relock the bootloader again?
Thank you very much
Click to expand...
Click to collapse
Ask the buyer if they want it locked. Personally it wouldn't be worth my time if it couldn't be unlocked again. Better to check first..
If you want to lock (not relock) bl justdownload your adequate firmware from androidhost.ru and flash fw using Usb-otg method.
You can unlock/lock your bl using unlock code anytime you want (provided you haven't changed your mainboard in the meantime).
forever_lol said:
If you want to lock (not relock) bl justdownload your adequate firmware from androidhost.ru and flash fw using Usb-otg method.
You can unlock/lock your bl using unlock code anytime you want (provided you haven't changed your mainboard in the meantime).
Click to expand...
Click to collapse
Hi is it possible to do the following..
Adb relock bootloader in my current state?
In my opinion the relock of the bootloader restore system to default over the erecovery or is this wrong?
Many thanks
blackst225 said:
Hi is it possible to do the following..
Adb relock bootloader in my current state?
In my opinion the relock of the bootloader restore system to default over the erecovery or is this wrong?
Many thanks
Click to expand...
Click to collapse
I thought you wanted to go back to stock. I've already gave you solution to bring back all the way stock.
I m not sure if it's even possible to re-lock bootloader using fastboot when you're on pie.
Bootloader status re-locked still means your warranty is void.
forever_lol said:
I thought you wanted to go back to stock. I've already gave you solution to bring back all the way stock.
I m not sure if it's even possible to re-lock bootloader using fastboot when you're on pie.
Bootloader status re-locked still means your warranty is void.
Click to expand...
Click to collapse
Hey I've tried this otg method but without success
If I try it with the dload folder option and try to force flash the emui updater throws an error.
Even with the dialer code method.. same..
I'm not able to get it to stock.
I've tried the Huawei suite on PC and phone in fastboot mode..same..massage this phone can't be reset or so..
What can I do next?
Current state, halfway working phone that's boot into os 2 times from 10 reboots.

Can we relock the bootloader of the Xperia 1 ii?

As the title states, can an unlocked bootloader be locked again?
Yes
nebula9 said:
Yes
Click to expand...
Click to collapse
100% sure?
Sony Developers got back to me and said:
"We are sorry to say that it is not possible to relock the bootloader of your device after unlocking it. However, it is possible to get back to the standard Sony software using our Flash tool"
I may sell this device and would like to relock it
cd993 said:
100% sure?
Sony Developers got back to me and said:
"We are sorry to say that it is not possible to relock the bootloader of your device after unlocking it. However, it is possible to get back to the standard Sony software using our Flash tool"
I may sell this device and would like to relock it
Click to expand...
Click to collapse
I'm not sure to what extent it can be relocked one day, but Sony phones generally have had a sort of fuse (meaning that even relocking _usually_ does not mean restoring to original state, unless you are able to do TA backups with a hack).
TL;DR: if you really want to resell it as locked, don't unlock it.
https://forum.xda-developers.com/xperia-1/help/xperia-1-drm-keys-locking-bootloader-t4079715
You can see on the Xperia 1, using fastboot you can relock the phone, and apparently this even restores DRM functionality (though no guarantees). But it will still have "YES" for "is ever unlocked" — so you'd be relocking it, but it would still be indicated in the service menu that this was once an unlocked phone.
nebula9 said:
https://forum.xda-developers.com/xperia-1/help/xperia-1-drm-keys-locking-bootloader-t4079715
You can see on the Xperia 1, using fastboot you can relock the phone, and apparently this even restores DRM functionality (though no guarantees). But it will still have "YES" for "is ever unlocked" — so you'd be relocking it, but it would still be indicated in the service menu that this was once an unlocked phone.
Click to expand...
Click to collapse
That's fair enough, just so long ad that splash screen at the beginning is gone!

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