Database Users

how to lock bootloader? warranty

Hello Guys
I have a question how to look bootloader?
Because maybe if i want to sell this phone or send to service i must have locked bootloader because they are checking if the bootloader is locked or not...

i think you need a locking code, have to ask huawei for that
then use the adb command to lock bootloader

+1
if find please post!

i found something
type this "fastboot oem relock YOUR CODE"
where YOUR CODE its the unlocking code provided by huawei
try and comment
anyways, the phone will say "relocked" not "locked" as factory locked.

Confusion?
jabonloco said:
i found something
type this "fastboot oem relock YOUR CODE"
where YOUR CODE its the unlocking code provided by huawei
try and comment
anyways, the phone will say "relocked" not "locked" as factory locked.
Click to expand...
Click to collapse
Assuming you already have your code...
adb reboot bootloader
then when it's at the bootloader and it mentions "phone unlocked"
fastboot oem lock
The lock and relock confusion ... was this ever tested with the relock command? Is there a difference?

I tried to lock back the phone with the following command:
Code:
fastboot oem lock
Phone got restarted into bootloader directly, without locking it. I read about this around the net, and found that the system may have to be unrooted in order to get the above command working.

I think, when you unlock your bootloader you never can how back.
once unlocked, always unlocked.
that is why they say you lose all warranty when you unlock your phone.

By the way, I tried to do the relocking with the TWRP Recovery installed. Maybe after reflashing a stock ROM, and flashing the stock recovery back, it'll work.

Does this work for anyone? Really need to lock my bootloader again and it's not working.

Bomn said:
Assuming you already have your code...
adb reboot bootloader
then when it's at the bootloader and it mentions "phone unlocked"
fastboot oem lock
The lock and relock confusion ... was this ever tested with the relock command? Is there a difference?
Click to expand...
Click to collapse
I think if you install a update.app of your stock firmware the bootloader will be locked..This may be work though I didn't check it yet.

Rifat Nurr said:
I think if you install a update.app of your stock firmware the bootloader will be locked..This may be work though I didn't check it yet.
Click to expand...
Click to collapse
Sadly not. Then bootloader is still unlocked.

As far as I know there's no way to relock the bootloader after unlocking it. By default it should allow such an operation, but looks like our fastboot framework was modified in this way.

works
http://huaweip8lite.blogspot.hu/2016/01/tutorial-how-to-lockrelock-bootloader.html

For unlock your bootloader
The command is :
"Fastboot oem unlock *********"
For relock it
The command is
"fastboot oem relock **********"
The stars was your unlock/lock code from Huawei.
It's the only way, other's command was wrong.
Install update don't relock your bootloader and you can update with your bootloader unlock.
It's only necessary to relock it in case of warranty.
Having his bootloader unlock is a great help when you have bad trouble like brick or softbrick.
Also you have to know exactly what you are making on your device's. And you are the only one to blame for the modifications you make on your device's

Lock the bootloader with DCUnlocker... it'll lock the bootloader without the 'relocked' on the screen.

Rifat Nurr said:
I think if you install a update.app of your stock firmware the bootloader will be locked..This may be work though I didn't check it yet.
Click to expand...
Click to collapse
No...Not Will Be Locked

For relock it, you have to use your unlock code too.
In fastboot type
fastboot oem relock ************
(the stars is your unlock code)
And now your bootloader become green and locked.
Sent from my ALE-L21 using XDA-Developers mobile app

And now your bootloader (maybe, i don't know for sure) become green and RE-locked.

If you use DC-unlocker it only reads "locked"
Lähetetty minun ALE-L21 laitteesta Tapatalkilla

Bazilli said:
If you use DC-unlocker it only reads "locked"
Lähetetty minun ALE-L21 laitteesta Tapatalkilla
Click to expand...
Click to collapse
We are talking about warranty, i think that huawei doesn't use DC-unlocker!

Is it possible to relock the bootloader?

I'm holding off twrp + bootloader unlock because I want to be able to undo in case I need to use my warranty. Is twrp/bootloader unlock reversible? Many thanks

Yes. Flash complete stock everything, boot into bootloader, connect to PC, and "fastboot oem lock".

Is it sure that it works??I have a A2017G and i have open BL and a B29 Custom Rom and i want back to Lock Bootloader

Kevinkuensken said:
Is it sure that it works??I have a A2017G and i have open BL and a B29 Custom Rom and i want back to Lock Bootloader
Click to expand...
Click to collapse
Yup! I've done it plenty of times. You do need to format the data partition though. This could mean that it'll wipe out even your internal storage, so back that up as well!

Im on stock and then i go to edl and then i type fastboot oem lock but nothing happend

Kevinkuensken said:
Im on stock and then i go to edl and then i type fastboot oem lock but nothing happend
Click to expand...
Click to collapse
Boot into bootloader, not EDL.

Erahgon said:
Yup! I've done it plenty of times. You do need to format the data partition though. This could mean that it'll wipe out even your internal storage, so back that up as well!
Click to expand...
Click to collapse
and you can unlock it again afterwards?
Never heard of anyone wanting to lock the bootloader so I'd a newb in this kind of thing.

BlazingBullets said:
and you can unlock it again afterwards?
Never heard of anyone wanting to lock the bootloader so I'd a newb in this kind of thing.
Click to expand...
Click to collapse
Locking it again is good for when you want to sell the device or send it in for warranty repair.

BlazingBullets said:
and you can unlock it again afterwards?
Never heard of anyone wanting to lock the bootloader so I'd a newb in this kind of thing.
Click to expand...
Click to collapse
Yeah, the unlock procedure is the same as before. If you didn't restore the original boot image before the relock, then it's just a matter of booting into fastboot and unlocking the device. Note that this will cause your data to be wiped as well!

If you restore your boot.bin backup file from when your device was locked, does this lock the bootloader? "fastboot oem lock", "fastboot flashing lock" nor "fastboot oem device-info" does nothing for me. Is there any other way to check if your bootloader has been relocked?
Thanks

H0lmEd said:
I'm holding off twrp + bootloader unlock because I want to be able to undo in case I need to use my warranty. Is twrp/bootloader unlock reversible? Many thanks
Click to expand...
Click to collapse
Hi there,
Were you ever able to re-lock your bootloader on your A2017G?
I just want root for now but understand that I'll need to unlock the bootloader first. Before doing that, I want to make sure I can re-lock the bootloader if needed.
Thanks for letting us know!

joaste said:
Hi there,
Were you ever able to re-lock your bootloader on your A2017G?
I just want root for now but understand that I'll need to unlock the bootloader first. Before doing that, I want to make sure I can re-lock the bootloader if needed.
Thanks for letting us know!
Click to expand...
Click to collapse
Guys/Gals, it is seriously as simple as using the fastboot command in reverse. I've done it a few times already with mine.
If you used the following to unlock....
fastboot devices
fastboot oem unlock
.....then you can use the following commands to relock
fastboot devices
fastboot oem lock
fastboot devices is not necessary, but I do it to make sure the devices is being recognized by ADB/FASTBOOT

sauerkraut17 said:
Guys/Gals, it is seriously as simple as using the fastboot command in reverse. I've done it a few times already with mine.
If you used the following to unlock....
fastboot devices
fastboot oem unlock
.....then you can use the following commands to relock
fastboot devices
fastboot oem lock
fastboot devices is not necessary, but I do it to make sure the devices is being recognized by ADB/FASTBOOT
Click to expand...
Click to collapse
Thanks for the answer.
But there are a few files to flash before using that command according to this thread.
Doesn't anything need to be flashed again (e. g. stock files or anything)?

Correct, but you would have already flashed those in order to use the unlock command in the first place.
Are you trying to relock on marshmallow or nougat?

sauerkraut17 said:
Correct, but you would have already flashed those in order to use the unlock command in the first place.
Are you trying to relock on marshmallow or nougat?
Click to expand...
Click to collapse
My phone is only a few days old. I'm debating whether to keep it or not (considering the Mate 9, but the price is not the same - love the form factor and bigger screen though - sound won't be the same and I think I'll miss the MiPop button on the Axon (never thought that would happen )).
I'm on the latest MM (B10 - the A2017G model).
Following the mentioned thread, I got to the point of installing TWRP (the signed version), only to realize that besides making backups, there is not much else I can do with that without unlocking the bootloader. I really just wanted to flash supersu and install adaway fro the time being until development matured for this phone (maybe also play around with viper - had great results on my LG G4).

HI, I get the error "FAILED (remote: unknown command)" in ADB when I enter "fastboot oem lock". Any way to fix this?

Guys, can anyone help me? I really need to lock the bootloader!
How can I fix the error "FAILED (remote: unknown command)" in ADB when I enter "fastboot oem lock"?
I'm on MM B11 Stock.
https://i.imgur.com/fdkgYs6.jpg

Hi Guys,
The Axon 7 Model A2017U I just purchased has the bootloader locked and it is running LineageOS 14.1 - 2018032-Nightly-axon7. I need to relock the bootloader and get back to the stock MiFavor rom so that I can send the phone to ZTE for repair. Can you please explain to a newb in some detail how to achieve that.
Thank you.

how to get product ID from bricked phone

i flashed oeminfo and cust and my bootloader is locked i tried using huawei product id generator but it does not work as the huawei site is not giving me a bootloader unlock code, is there any weay i could get it i have access to fast boot i tried "fastboot getvar all" but all it says is command not allowed every time i try somthing is there another way?

bghyt said:
i flashed oeminfo and cust and my bootloader is locked i tried using huawei product id generator but it does not work as the huawei site is not giving me a bootloader unlock code, is there any weay i could get it i have access to fast boot i tried "fastboot getvar all" but all it says is command not allowed every time i try somthing is there another way?
Click to expand...
Click to collapse
I'm afraid not.. You should get your product ID from the dial pad off the phone app but if your device is bricked with a locked bootloader and you don't have a bootloader unlock code I guess you're stuck..

bghyt said:
i flashed oeminfo and cust and my bootloader is locked i tried using huawei product id generator but it does not work as the huawei site is not giving me a bootloader unlock code, is there any weay i could get it i have access to fast boot i tried "fastboot getvar all" but all it says is command not allowed every time i try somthing is there another way?
Click to expand...
Click to collapse
Try phoenixdc

vozilo said:
Try phoenixdc
Click to expand...
Click to collapse
I will try thank you.

Brick after to block oem with "TOOL ALL IN ONE"

Hi,
Hello
My phone is a xiaomi mi a2 of 64
The problem is:
After blocking the OEM with the "tool all in one", my phone issues a warning "your device has loaded into a different operating system" and then shows "the software device can be checked for corruption, please block the bootloader"
Is there any way it works normally?

You locked the bootloader with an uncertified/modified version of Android.
Unlock your bootloader (oem unlock, flashing unlock, flashing critical unlock), flash the stock ROM and then you can lock it again.

Flashing unlock is no allowed
Yepi69 said:
You locked the bootloader with an uncertified/modified version of Android.
Unlock your bootloader (oem unlock, flashing unlock, flashing critical unlock), flash the stock ROM and then you can lock it again.
Click to expand...
Click to collapse
When I try to do that I get "flashing unlock is not allowed" try the various tools that are on the platform and writing them manually, I get the same.
How could I unlock it?

Lryas said:
When I try to do that I get "flashing unlock is not allowed" try the various tools that are on the platform and writing them manually, I get the same.
How could I unlock it?
Click to expand...
Click to collapse
Boot into EDL mode and flash stock android with MI FLASH

Dicvigarista said:
Boot into EDL mode and flash stock android with MI FLASH
Click to expand...
Click to collapse
Well, that was the only solution, thanks for all the help.

p9 lite twrp.....Stock room

p9 lite VNS-L31C185B397 android7.0 emui5.0.4 icannot find twrp (i try mor than 7 type noting is work ) or Stock room to get boot .img to root with magisk
Any ideas or help I would be very thankful .......

hassan-sky said:
p9 lite VNS-L31C185B397 android7.0 emui5.0.4 icannot find twrp (i try mor than 7 type noting is work ) or Stock room to get boot .img to root with magisk
Any ideas or help I would be very thankful .......
Click to expand...
Click to collapse
Working TWRP

hassan-sky said:
Null
Click to expand...
Click to collapse

hassan-sky said:
Null
Click to expand...
Click to collapse

hassan-sky said:
Null
Click to expand...
Click to collapse

-Alf- said:
Working TWRP
Click to expand...
Click to collapse
"FAILED (remote: image verification error)" from fastboot.

-Alf- said:
Working TWRP
Click to expand...
Click to collapse
"FAILED (remote: image verification error)" from fastboot.

hassan-sky said:
"FAILED (remote: image verification error)" from fastboot.
Click to expand...
Click to collapse
Are you sure that bootloader is unlocked? (With unlocked BL you will see that message each time when you reboot: "Your device has been unlocked and can't be trusted").
Try to relock and then unlock the bootloader. (Sometimes the phone and other tools shows phone is unlocked and it is unable to flash recovery.)

-Alf- said:
Are you sure that bootloader is unlocked? (With unlocked BL you will see that message each time when you reboot: "Your device has been unlocked and can't be trusted").
Try to relock and then unlock the bootloader. (Sometimes the phone and other tools shows phone is unlocked and it is unable to flash recovery.)
Click to expand...
Click to collapse
I have used PotatoNV-next-v2.0.1 to open bootloader ,He has given me new code
and yes i see the message"Your device has been unlocked and can't be trusted").
in fastboot mode :
phone unlock
frp unlock
when I tried to relock bootloader With the code he gave me :
FAILED (remote: stat not match)

hassan-sky said:
when I tried to relock bootloader With the code he gave me :
FAILED (remote: stat not match)
Click to expand...
Click to collapse
Then try unlock bootloader again using BL unlock code.

-Alf- said:
Are you sure that bootloader is unlocked? (With unlocked BL you will see that message each time when you reboot: "Your device has been unlocked and can't be trusted").
Try to relock and then unlock the bootloader. (Sometimes the phone and other tools shows phone is unlocked and it is unable to flash recovery.)
Click to expand...
Click to collapse
I have used PotatoNV-next-v2.0.1 to open bootloader ,He has given me new code
and yes i see the message"Your device has been unlocked and can't be trusted").
in fastboot mode :
phone unlock
frp unlock
when I tried to relock bootloader With the code he gave me :
FAILED (remote: stat not match)
-Alf- said:
Then try unlock bootloader again using BL unlock code.
Click to expand...
Click to collapse
FAILED (remote: password wrong)

hassan-sky said:
I have used PotatoNV-next-v2.0.1 to open bootloader ,He has given me new code
and yes i see the message"Your device has been unlocked and can't be trusted").
in fastboot mode :
phone unlock
frp unlock
when I tried to relock bootloader With the code he gave me :
FAILED (remote: stat not match)
FAILED (remote: password wrong)
Click to expand...
Click to collapse
Get BL unlock code using paid service for 4$/€. (dc-unlocker or hcu-client).

-Alf- said:
Get BL unlock code using paid service for 4$/€. (dc-unlocker or hcu-client).
Click to expand...
Click to collapse
ok,and Thank you for being patient

hassan-sky said:
ok,and Thank you for being patient
Click to expand...
Click to collapse
No problem.

did it work? I have the same issue I think. but i don't want to buy a code if PotatoNV already did the job and the problem is elsewhere

Elfenfreund said:
did it work? I have the same issue I think. but i don't want to buy a code if PotatoNV already did the job and the problem is elsewhere
Click to expand...
Click to collapse
As far as I know Potatonv method was made for Kirin 960/659/655. On 650 may or may not work correctly...

-Alf- said:
As far as I know Potatonv method was made for Kirin 960/659/655. On 650 may or may not work correctly...
Click to expand...
Click to collapse
oh i see. thank you

-Alf- said:
Get BL unlock code using paid service for 4$/€. (dc-unlocker or hcu-client).
Click to expand...
Click to collapse
I'm also getting the error FAILED (remote: image verification error) bootloader unlocked with PotatoNV.
What if my device (VNS-L23) isn't listed on those sites?

Mago6246 said:
What if my device (VNS-L23) isn't listed on those sites?
Click to expand...
Click to collapse
Ask Mr. Valdemaras
https://www.dc-unlocker.com/search?q=Vns-l23