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
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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
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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!
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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.
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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?
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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.
I just noticed that after the upgrade to Nougat Beta on my FRD-L02 Indian version via the official OTA back in November, my bootloader has been locked!
Did anyone else face this? I unlocked my bootloader again but having to do this after every official OTA will be a pain as it wipes the device!
Yes it is a known fact and it is also a way to relock your bootloader
just do a backup before unlocking?
It is normal, and if you want to unlock the bootloader, 90% you'll use the unlock code you used in the first time
How to relock bootloader
Hi guys can anyone tell me how to relock bootloader honor 8
shafqatrehman1989 said:
Hi guys can anyone tell me how to relock bootloader honor 8
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It's just a matter of command (as it's the same as unlocking) just a different command when locking
shafqatrehman1989 said:
Hi guys can anyone tell me how to relock bootloader honor 8
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Did you even read the first 5 posts ..it clearly says when you flash a rollback update.app it locks the bootloader
fastboot oem relock (yourunlockcodehere)
Will relock > not Lock like the update.app will
That's an easy and free way to re-lock your phone.
I've done lots of updates (as long as they are OTA's) without causing anything to be re-locked. The only thing I know of that re-locks the bootloader is the rollback to b162. How , or which method (Charles, part-of-beta-testers, dialer method) did you use to apply update that locked the phone? I'm on b360 now without any loss of data, and remained unlocked so I don't see that effect myself.
Thanks.
Hello! My phone is bricked and I've got unlock code, I need to unlock bootloader but I can't, my PC doesn't recognize my p9 lite.
Bootloader locked
FRP locked
OEM disable
I don't now what to do. Help me please, I'll really appreciate it.
Thanks.
robseminario said:
Hello! My phone is bricked and I've got unlock code, I need to unlock bootloader but I can't, my PC doesn't recognize my p9 lite.
Bootloader locked
FRP locked
OEM disable
I don't now what to do. Help me please, I'll really appreciate it.
Thanks.
Click to expand...
Click to collapse
What android version were you running?
Anyway try this since you're not gonna unlock bootloader with OEM locked:
1.if on MM place your extracted update.app(same as you were running or latest available) to dload folder on root of sdcard and install via 3 buttons method.
2.if you're on nougat 2 things can be done:
a. same as above in 1
b. or download the rollback file plus MM full update file, place In dload folder the update.app file from rollback and MM full update respectively, install one after another.
NOTE that all this methods don't require unlocked bootloader or custom recovery, so try this above.
_New World Order (NWO)_
robseminario said:
Hello! My phone is bricked and I've got unlock code, I need to unlock bootloader but I can't, my PC doesn't recognize my p9 lite.
Bootloader locked
FRP locked
OEM disable
I don't now what to do. Help me please, I'll really appreciate it.
Thanks.
Click to expand...
Click to collapse
as long as you have access on recovery (Vol up + power) Dannerick can help you and at least have ex_sdcard
i cant find exact root guide for 7.1.1. can u help ?
are you unlock your bootloader
unlock bootloader first
then root your device
if root your device in locked bootloader
you goes in bootloop
here is guide
https://forum.xda-developers.com/gm-5-plus/development/twrp-twrp-root-android-one-gen-t3404338
hit thumbs up if i helped you
I see plenty of guides on how to unlock the bootloader which as I understand voids the warranty. Is there any way to relock the bootloader if I need to? Maybe someone could link me to a guide?
I've had bad experiences with dodgy solder in 3 LG G4 handsets so I sort of see the value in a manufacturer's warranty these days.
In fastboot
"Fastboot oem relock YourCode"
Fastboot relock still show that the phone was unlocked before but to revert to original state you have to flash stock firmware using this guide https://forum.xda-developers.com/mate-9/how-to/guide-rebrand-chinese-al00-mate9-to-t3554656/page57
This will lock the bootloader without any trace
Many many thanks.
gm007 said:
Fastboot relock still show that the phone was unlocked before but to revert to original state you have to flash stock firmware using this guide https://forum.xda-developers.com/mate-9/how-to/guide-rebrand-chinese-al00-mate9-to-t3554656/page57
This will lock the bootloader without any trace
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Hi can you write me step by step how lock again bootloader becuase i read this link and i dont know how. Please.
I want debrand my P10 to clear soft Huawei and again lock boot loader to have full warranty. please help me
gm007 said:
Fastboot relock still show that the phone was unlocked before but to revert to original state you have to flash stock firmware using this guide https://forum.xda-developers.com/mate-9/how-to/guide-rebrand-chinese-al00-mate9-to-t3554656/page57
This will lock the bootloader without any trace
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Click to collapse
Is the adb relock bootloader "Code" command connected with a factory reset? Do I keep my data?