How can I re-lock the bootloader for LG G4? - G4 Q&A, Help & Troubleshooting

Can you please link me to a thread or explain how I can relock the bootloader? Thanks in advance. (I don't mind if it wipes everything BTW)

EmanZ80 said:
Can you please link me to a thread or explain how I can relock the bootloader? Thanks in advance. (I don't mind if it wipes everything BTW)
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The bootloader can't be relocked, unfortunately. Once unlocked, always unlocked (for now).
Hope this helps. Cheers

Related

[Q] Unlocked bootloader with wrong file

So I just spent the last couple hours trying to root my phone. Only to realize that when I unlocked the bootloader i requested the wrong unlock.bin file. Instead of selecting the htc m8 file, I selected all other supported devices. I don't know if this is the cause of my problem, but since I can't reboot to bootloader, I feel that it is. Is the solution as simple as relocking the bootloader and then unlocking it with the correct unlock.bin file. Or can i just get the correct file and unlock it again. I don't know if any of it will work since the phone won't go into the bootloader. Thought I would as people that know more than me before I brick my phone.
Getting all the stock files from here and then using your cpu to flash everything you should be fine.
jayandare said:
Getting all the stock files from here and then using your cpu to flash everything you should be fine.
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Ok, Thought I would have to be able to reboot to bootloader in order to flash but I will give that a try. Was there supposed to be a link or did you just mean "from here" as in the xda site?
Tskizzle said:
Ok, Thought I would have to be able to reboot to bootloader in order to flash but I will give that a try. Was there supposed to be a link or did you just mean "from here" as in the xda site?
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Stock ruu method ,lock bootloader first
manish dubey said:
Stock ruu method ,lock bootloader first
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Ok thanks. I'll do some searching and figure out how to do that, then try and flash the stock ruu. I'll report back if I have any issues. Thank you again.
Tskizzle said:
Ok thanks. I'll do some searching and figure out how to do that, then try and flash the stock ruu. I'll report back if I have any issues. Thank you again.
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Click to collapse
So I've been reading around and come across some conflicting info. So I finally found the fastboot command to lock the bootloader but some have said to flash the stock ruu first while others say after. Can anyone clear this up for me and let me know if it makes a difference?
S-OFF - no need to relock the bootloader, just run the appropriate RUU
S-ON - relock the bootloader and then run the appropriate RUU
cheers.
Mr Hofs said:
S-OFF - no need to relock the bootloader, just run the appropriate RUU
S-ON - relock the bootloader and then run the appropriate RUU
cheers.
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Click to collapse
Thanks for the help. I think I can handle this now. Is it worth it to go S-off? I'm gonna root once I am back to stock
Tskizzle said:
Thanks for the help. I think I can handle this now. Is it worth it to go S-off? I'm gonna root once I am back to stock
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Quick reattack on this. I never actually went away from stock. As I couldn't get into the bootloader I never flashed twrp or anything so do I really need to flash the stock RUU? Just trying to figure out for knowledge purposes. Am I basically flashing the RUU to start over from scratch or is it just a precautionary thing?

Relock Bootloader

Hi, just flashed stock firmware but can i relock my bootloader? thanks
Frenix27 said:
Hi, just flashed stock firmware but can i relock my bootloader? thanks
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From what I know, no. You can't relock the Lg G4 bootloader.
neutrondev said:
From what I know, no. You can't relock the Lg G4 bootloader.
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Because when I turn on it's written bootloader unlocked. Don't like so much.
Frenix27 said:
Because when I turn on it's written bootloader unlocked. Don't like so much.
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You can't relock it and also DRM keys are destroyed. Nothing to worry about but they can refuse warranty.

Soft Bricked?

Hi,
Just received my 5x and I made a mistake
After unlocking the bootloader for flashing the latest factory image then installed a twrp & root the device I've relocked the bootloader resulting on a bootloop/brick
I forget to read the small text saying DON'T DO THAT
Can I have any help?
PS:
Actually I can only boot to the bootlaoder and twrp.
I try to flash a custom rom with no success.
I can't unlock the bootloader again. (FAILED (remote: oem unlock is not allowed))
Thanks !
Flash an official image with LGUP, there is a thread in the forum talking about this
ybregeon2016 said:
Flash an official image with LGUP, there is a thread in the forum talking about this
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thanks !
this one ?
http://forum.xda-developers.com/nexus-5x/help/req-help-to-unbrick-t3251740
plopingo said:
thanks !
this one ?
http://forum.xda-developers.com/nexus-5x/help/req-help-to-unbrick-t3251740
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Yes
ybregeon2016 said:
Yes
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seems a nightmare on this thread don't know if I want to try this

Htc m9 root failed!

Hi everybody. I have a HTC M9 vzw. I bricked my device before and now running stock rom, s-off, relocked and TWRP installed. I tried to root it by using different version of TWRP and supersu.zip but no su binary installed. Now i dont know how to do since I want to change the relocked status back to unlocked and want to install custom rom as before. If u experienced it before and have a solution pleaaseee help me.
abdinsyakirin said:
Hi everybody. I have a HTC M9 vzw. I bricked my device before and now running stock rom, s-off, relocked and TWRP installed. I tried to root it by using different version of TWRP and supersu.zip but no su binary installed. Now i dont know how to do since I want to change the relocked status back to unlocked and want to install custom rom as before. If u experienced it before and have a solution pleaaseee help me.
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If your bootloader is (re)locked, then I'd start with unlocking it again. I'm not sure that you can unlock the bootloader via HTCdev, but SunShine supports the Verizon M9. Check that out.
computerslayer said:
If your bootloader is (re)locked, then I'd start with unlocking it again. I'm not sure that you can unlock the bootloader via HTCdev, but SunShine supports the Verizon M9. Check that out.
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How about the root that im asking? Do u have any idea?
computerslayer said:
If your bootloader is (re)locked, then I'd start with unlocking it again. I'm not sure that you can unlock the bootloader via HTCdev, but SunShine supports the Verizon M9. Check that out.
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Sunshine can only S-OFF the device, not unlock it. I tried it just now.
abdinsyakirin said:
Hi everybody. I have a HTC M9 vzw. I bricked my device before and now running stock rom, s-off, relocked and TWRP installed. I tried to root it by using different version of TWRP and supersu.zip but no su binary installed. Now i dont know how to do since I want to change the relocked status back to unlocked and want to install custom rom as before. If u experienced it before and have a solution pleaaseee help me.
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Click to collapse
Try using supersu v 2.65 ,that's what worked for me.
https://download.chainfire.eu/921/SuperSU
Pfaffinator said:
Try using supersu v 2.65 ,that's what worked for me.
https://download.chainfire.eu/921/SuperSU
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May I know what version of TWRP is the best?
abdinsyakirin said:
May I know what version of TWRP is the best?
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"The best" depends on your current firmware. Read Q4 for a more detailed explanation.
Flippy498 said:
"The best" depends on your current firmware. Read Q4 for a more detailed explanation.
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Thank you very much for the link! I hope it will solve my problem since actually this device was flashed with ICE rom and then I lost the data connection. Thanks again. I will try to use that solution when I have free time to work on.
Pfaffinator said:
Try using supersu v 2.65 ,that's what worked for me.
https://download.chainfire.eu/921/SuperSU
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ah man it doesn't work. i am dead-end. dont know what to do. i need to root it if i want to unlock it back but it seems impossible to root it.
abdinsyakirin said:
ah man it doesn't work. i am dead-end. dont know what to do. i need to root it if i want to unlock it back but it seems impossible to root it.
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How did you unlock your bootloader the first time around?
computerslayer said:
How did you unlock your bootloader the first time around?
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I bought it unlocked with s-off. I accidentally relocked it before I bricked it. Now my device is working but only accept verizon sim.
computerslayer said:
How did you unlock your bootloader the first time around?
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Thanks because u were trying to help me. I managed to solve the root problem by using the terminal command from twrp. This thread officially closed. SOLUTION: https://forum.xda-developers.com/one-m9/general/how-to-lock-unlock-bootloader-htcdevs-t3092036

How to unlock bootloader with fw 4.21.40.223?

This tim has a method to unlock bootloader with fw 4.21.40.223?
and can i relock it back?
thx
PikaManTH said:
This tim has a method to unlock bootloader with fw 4.21.40.223?
and can i relock it back?
thx
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Click to collapse
I'm not totally sure but you may have to downgrade in order to unlock your bootloader. And I don't think there's an official way to relock it, but why would you want to?
PikaManTH said:
This tim has a method to unlock bootloader with fw 4.21.40.223?
and can i relock it back?
thx
Click to expand...
Click to collapse
Flashing raw firmware can re-lock your bootloader.
OR
Flashing any MM Build with Stock Recovery can also re-lock your bootloader.
Ragarianok said:
I'm not totally sure but you may have to downgrade in order to unlock your bootloader. And I don't think there's an official way to relock it, but why would you want to?
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My zen2 is a new one and have remain warranty. If problem with hardware so i can send back to care center to repair it without void a warranty.
Thank you.
sry for my bad english.
Sent from my ASUS_Z00AD using Tapatalk

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