Bootloader relock automatically - Nexus 5X Q&A, Help & Troubleshooting

hi, I tried to follow this guide but every time I unlock the bootloader, after reboot is again blocked.
Can you tell me why this happens?
I have already given permissions to "Enable OEM Unlock".
Thanks

Related

root MZP

Hello,
i'am wondering what the best approach to root a MZP. What i understand there is a procedure via "fastboot oem get_unlock_data" and get a key from Motorola. And a second via Developer Settings ->" OEM unlock".
What is the difference?
thanks
klofisch
klofisch said:
Hello,
i'am wondering what the best approach to root a MZP. What i understand there is a procedure via "fastboot oem get_unlock_data" and get a key from Motorola. And a second via Developer Settings ->" OEM unlock".
What is the difference?
thanks
klofisch
Click to expand...
Click to collapse
Neither of them have to do with rooting, they have to do with unlocking the bootloader, which is the first step. Then you need to flash a customer recovery like TWRP, then you can flash SuperSu and have root.
ah right. ok,...but what does "OEM unlock"
klofisch said:
ah right. ok,...but what does "OEM unlock"
Click to expand...
Click to collapse
It used to have to be done via a command, not it is built into Developers options.
Here read this to to better understand what unlocking your bootloader will entail.
https://motorola-global-portal.custhelp.com/app/standalone/bootloader/unlock-your-device-a
Once your bootloader is unlock, then follow this one to flash TWRP and properly root.
https://forum.xda-developers.com/moto-z-play/how-to/correct-rooting-moto-z-play-feb-17-t3560268

Bootloader lock after unlock automaticaly

Hello,
I have the following problem:
1. I boot into bootloader
2. "fastboot oem unlock"
3. I answer the security question on the phone with yes.
4. the bootloader is unlocked.
5. when i now restart the bootloader, is this again locked, without any command from me.
Sorry for the bad englisch
You have modified motherboard. It should be a thread somewhere about that issue. You can achieve root with modified boot.img.
vt628 said:
Hello,
I have the following problem:
1. I boot into bootloader
2. "fastboot oem unlock"
3. I answer the security question on the phone with yes.
4. the bootloader is unlocked.
5. when i now restart the bootloader, is this again locked, without any command from me.
Sorry for the bad englisch
Click to expand...
Click to collapse
try to use search tool
Can not unlock the bootloader http://forum.xda-developers.com/nexus-5x/help/unlock-bootloader-t3478257
No rpmb bootloader locked http://forum.xda-developers.com/nexus-5x/help/rpmb-bootloader-locked-t3481906
Can't unlock bootloader on N5X http://forum.xda-developers.com/nexus-5x/help/unlock-bootloader-n5x-t3290923
Bootloader relocks itself after reboot! http://forum.xda-developers.com/nexus-5x/help/bootloader-relocks-reboot-t3466854
No rpmb and impossibility to unlock my bootloader http://forum.xda-developers.com/nexus-5x/help/rpmb-impossibility-to-unlock-bootloader-t3483339

OEM Unlock = Unlock Bootloader?

If I understand correctly OEM unlock means that it unlocks bootloader, right?
So I have the OEM unlock option in my Developer Options and I'm wondering why people are using adb to unlock the bootloader instead of just ticking OEM option?
Is it not the same?
Can I just tick the option and flash twrp, rom, etc.?
Shiroyaksha said:
If I understand correctly OEM unlock means that it unlocks bootloader, right?
So I have the OEM unlock option in my Developer Options and I'm wondering why people are using adb to unlock the bootloader instead of just ticking OEM option?
Is it not the same?
Can I just tick the option and flash twrp, rom, etc.?
Click to expand...
Click to collapse
Hi, OEM unlock option in settings is just a switch that enables/disables the unlocking of the bootloader. You must first enable OEM unlock in settings and then proceed with the actual unlocking of the bootloader
Google puts a number of steps so you can't accidentally unlock your bootloader.
Enable developer mode
Enable OEM unlock
Unlock bootloader (using fastboot)

Unlocking Bootloader

So lately, I tried to unlock bootloader of my Samsung Galaxy M30 with One UI Core 2.0. As I had read in many guides that after successful unlock, the option of unlocking OEM will be grayed out. But when I enabled it, it asked for my device PIN, then Samsung account password and switched off automatically. After factory reset, it booted up but the OEM unlock option was still blue and togglable. It read Bootloader already unlocked!
I'm confused because there was no 'device lock' mode in download mode, no need to 'long press power up to unlock Bootloader in download mode' or 'no gray toggles'.
On Download Mode I could see "OEM lock: OFF" . Does it mean that my Bootloader is unlock.
Azamsm said:
So lately, I tried to unlock bootloader of my Samsung Galaxy M30 with One UI Core 2.0. As I had read in many guides that after successful unlock, the option of unlocking OEM will be grayed out. But when I enabled it, it asked for my device PIN, then Samsung account password and switched off automatically. After factory reset, it booted up but the OEM unlock option was still blue and togglable. It read Bootloader already unlocked!
I'm confused because there was no 'device lock' mode in download mode, no need to 'long press power up to unlock Bootloader in download mode' or 'no gray toggles'.
On Download Mode I could see "OEM lock: OFF" . Does it mean that my Bootloader is unlock.
Click to expand...
Click to collapse
You are bootloader unlocked. Check the guides on this forum, and also the TWRP thread.
Guides:
1. https://forum.xda-developers.com/galaxy-m30/how-to/guide-flash-gsi-samsung-m30-t4126133
2. https://forum.xda-developers.com/galaxy-m30/how-to/guide-galaxy-m30-recovery-edl-modes-t4020231
3. https://forum.xda-developers.com/ga...m-android-10-q-stock-rooted-firmware-t4026819
TWRP:
1. https://forum.xda-developers.com/galaxy-m30/development/m30lte-twrp-3-3-1-samsung-m30-t3931510
hello, urgent help me. I have a samsung M30 which I flash with an android 10 binary 6 rom. and after the tactility of my phone no longer works. I want to bring the system back to android 9, but I can't.
please give me any solution, waiting for your answer

How do i lock the bootloader in my motorola one action?

Hello, i unlocked the bootloader of my motorola one action. And i installed lineage 18.1 official, but i want to lock the bootloader again. i tried locking the bootloader using this help thread https://forum.xda-developers.com/t/...-2019-ask-any-question-noob-friendly.4010875/ but it din't work. Can somewone help me?
raphaelgamer981 said:
Hello, i unlocked the bootloader of my motorola one action. And i installed lineage 18.1 official, but i want to lock the bootloader again. i tried locking the bootloader using this help thread https://forum.xda-developers.com/t/...-2019-ask-any-question-noob-friendly.4010875/ but it din't work. Can somewone help me?
Click to expand...
Click to collapse
NEVER lock a phone with custom firmware installed. This usually leads to bootloops.
georg3_ said:
NEVER lock a phone with custom firmware installed. This usually leads to bootloops.
Click to expand...
Click to collapse
No, I Didn't try to lock the bootloader with a custom firmware.
raphaelgamer981 said:
No, I Didn't try to lock the bootloader with a custom firmware.
Click to expand...
Click to collapse
What are the steps you took before relocking the bootloader?
In my experience, relocking the bootloader should be the last thing you do, after you've got a working/bootable stock ROM.
arsradu said:
What are the steps you took before relocking the bootloader? In my experience, relocking the bootloader should be the last thing you do, after you've got a working/bootable stock ROM.
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Click to collapse
So, after i installed the latest stock rom, the device worked normally, but after waiting a while for the oem lock option appear in development options, it din´t show up. so i just gave up and installed lineage 19.1 but if i can i want to lock the bootloader again.
Raphael, I think you might have quoted my post twice, but didn't add an actual answer. Or maybe I'm super blind and I can't see it.
arsradu said:
Raphael, I think you might have quoted my post twice, but didn't add an actual answer. Or maybe I'm super blind and I can't see it.
Click to expand...
Click to collapse
ohh sorry, i tried replying to your post in my ipad 3 and it din´t show up any caracters.
raphaelgamer981 said:
So, after i installed the latest stock rom, the device worked normally, but after waiting a while for the oem lock option appear in development options, it din´t show up. so i just gave up and installed lineage 19.1 but if i can i want to lock the bootloader again.
Click to expand...
Click to collapse
So, the OEM lock/unlock thing comes with a pretty big caveat, and you need to be aware of it: loss of data.
Every time you lock or unlock your bootloader, a wipe data is triggered.
Now, for as far as I know, to lock the bootloader, you need two things:
1. Stock ROM. Don't do this on a custom ROM!
2. following command, in Terminal/Cmd Prompt
fastboot oem lock
Of course, you need to be in fastboot mode, so if you're not, and if you're booted and connected via USB (USB debugging needs to be ON and RSA fingerprinting accepted), do:
adb devices
It should display your device here. This is just to make sure ADB is working properly.
adb reboot bootloader
At this point, the phone should reboot into bootloader, so now you can do the lock command
fastboot oem lock
Data should be erased and, in case it doesn't automatically boot up, you can reboot the phone.
Don't worry about the OEM unlocking option in Developer Options. You just make sure the stock ROM is functional before attempting to relock the bootloader.
arsradu said:
So, the OEM lock/unlock thing comes with a pretty big caveat, and you need to be aware of it: loss of data.
Every time you lock or unlock your bootloader, a wipe data is triggered.
Now, for as far as I know, to lock the bootloader, you need two things:
1. Stock ROM. Don't do this on a custom ROM!
2. following command, in Terminal/Cmd Prompt
fastboot oem lock
Of course, you need to be in fastboot mode, so if you're not, and if you're booted and connected via USB (USB debugging needs to be ON and RSA fingerprinting accepted), do:
adb devices
It should display your device here. This is just to make sure ADB is working properly.
adb reboot bootloader
At this point, the phone should reboot into bootloader, so now you can do the lock command
fastboot oem lock
Data should be erased and, in case it doesn't automatically boot up, you can reboot the phone.
Don't worry about the OEM unlocking option in Developer Options. You just make sure the stock ROM is functional before attempting to relock the bootloader.
Click to expand...
Click to collapse
I tried that, and it din´t work, this method is the same that was in a help thread in xda forum of my device, this command works fine in my nexus 6, but on my moto one action it does not, i unlocked my bootloader via the normal method using motorola´s website, not using another method.
raphaelgamer981 said:
I tried that, and it din´t work, this method is the same that was in a help thread in xda forum of my device, this command works fine in my nexus 6, but on my moto one action it does not, i unlocked my bootloader via the normal method using motorola´s website, not using another method.
Click to expand...
Click to collapse
raphaelgamer981 said:
I tried that, and it din´t work, this method is the same that was in a help thread in xda forum of my device, this command works fine in my nexus 6, but on my moto one action it does not, i unlocked my bootloader via the normal method using motorola´s website, not using another method.
Click to expand...
Click to collapse
But why do you say it didn't work? Do you get an error at any point during the process?
arsradu said:
But why do you say it didn't work? Do you get an error at any point during the process?
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Click to collapse
no, i run the command and it asks for changing the oem lock setting in developer options, i reboot the phone and run through the setup process. Then when i enable developer options and check the oem lock option, it is greyed out.
Is it greyed out in the on or off position? Can you attach a screenshot? I don't remember the operations sequence... But I think the option was automatically switched back to the original position (off) when you lock the bootloader. I could be wrong though. So...when you run the "fastboot oem lock" command, it asks you to....what?
Set the option to on or off? Some screenshots from both the PC, with the message, and the developer options might help to clarify this.
arsradu said:
Is it greyed out in the on or off position? Can you attach a screenshot? I don't remember the operations sequence... But I think the option was automatically switched back to the original position (off) when you lock the bootloader. I could be wrong though. So...when you run the "fastboot oem lock" command, it asks you to....what?
Set the option to on or off? Some screenshots from both the PC, with the message, and the developer options might help to clarify this.
Click to expand...
Click to collapse
it is greyed in the on position, i can´t add a screenshot because i am in lineage 19.1 with root and the option shows up,when i run the command in cmd, it says to me to check the oem lock option in developer options
raphaelgamer981 said:
it is greyed in the on position, i can´t add a screenshot because i am in lineage 19.1 with root and the option shows up,when i run the command in cmd, it says to me to check the oem lock option in developer options
Click to expand...
Click to collapse
A screenshot would be really useful. But don't worry about it. When you're back to stock rom and ready to lock your bootloader, we can resume this then. I think either we're missing something, or it's everything ok, and you just need to switch that option off. Though, I remember I didn't have to do it manually. But I could be wrong though.
So, don't worry. Enjoy LineageOS and we can resume this when you're back to stock ROM and ready to lock.
arsradu said:
A screenshot would be really useful. But don't worry about it. When you're back to stock rom and ready to lock your bootloader, we can resume this then. I think either we're missing something, or it's everything ok, and you just need to switch that option off. Though, I remember I didn't have to do it manually. But I could be wrong though.
So, don't worry. Enjoy LineageOS and we can resume this when you're back to stock ROM and ready to lock.
Click to expand...
Click to collapse
ok thanks for your help!
arsradu said:
A screenshot would be really useful. But don't worry about it. When you're back to stock rom and ready to lock your bootloader, we can resume this then. I think either we're missing something, or it's everything ok, and you just need to switch that option off. Though, I remember I didn't have to do it manually. But I could be wrong though.
So, don't worry. Enjoy LineageOS and we can resume this when you're back to stock ROM and ready to lock.
Click to expand...
Click to collapse
hello, so i want to lock the bootloader again, how do i install the stock rom back?
arsradu said:
A screenshot would be really useful. But don't worry about it. When you're back to stock rom and ready to lock your bootloader, we can resume this then. I think either we're missing something, or it's everything ok, and you just need to switch that option off. Though, I remember I didn't have to do it manually. But I could be wrong though.
So, don't worry. Enjoy LineageOS and we can resume this when you're back to stock ROM and ready to lock.
Click to expand...
Click to collapse
so after running the fastboot oem lock command, it asked this in the cmd
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot oem lock
...
(bootloader) Check 'Allow OEM Unlock' in Android Settings > Developer
(bootloader) Options
OKAY [ 0.080s]
finished. total time: 0.080s
when i rebooted the phone, it showed the screen saying that the bootloader was unlocked. also i had to re run the command because it was going to erase my phone but that din´t happend, after going to developer options the option was still greyed out.
The last 3 days i've tried some roms from here.first i've unlocked the bootloader in developer menu,then from fastboot with the unlock key provided by motorola website,i've tried different rom,didnt like that i cannot use bank apps.so i went for locking.full reset,adb enable,reboot bootloader,full flash stock rom (last one from Motorola),reboot to check,adb enable, reboot bootloader,run command " fastboot oem lock " once ,it asked for confirmation due to data loss,then run command " fastboot oem lock " once more,then reboot to os.everything went ok,device dont show that was unlocked

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