Problems with unlocking the bootloader - LG K8 Questions & Answers

I have a problem
I want to unblock the bootloader, but when I get to put the code "fastboot oem device-id" it gives the following error "FAILED (remote: unknown command)". No matter how many times you try or the version of windows you use, you still give the same error.

In this guide you can find how to unlock bootloader if you have 2016 model, but beware root method probably don't work so just follow steps to unlock bootloader for whatever reason you want to do that
https://forum.xda-developers.com/lg-k10/how-to/friendly-root-method-lg-k8-k10-t3531223

Related

Bootloader Error Vivo y51

Hi, i have a vivo y51 and i want to root the phone i tried a lot of thing.When i use adb 'adb reboot bootloader' and 'fastboot oem unlock' it says FAILED (remote: unknown command or device is lock).Is there anyway to fix the error or completely change the phone's os?
Vivo y51 bootloader unlock is easy
To unlock your bootloader You'll need to upgrade to latest version i.e.
PDF1510 2.6.7
Then follow the steps in this thread

Problems with unlock/relock bootloader and TWRP flashing

Hi, I have Asia-Pacific version of the Huawei Mediapad M3 (BTV-W09C209B005). I'm trying to flash TWRP to gain root access, but I'm encountering problems in the preliminary stage. I've searched for similar problems in the forum, but couldn't find a solution that works for me.
So here are the steps I've done:
1. I received the official bootloader code from Huawei.
2. I used ADB and Fastboot to unlock the bootloader, but I noticed something peculiar: the screen says
Phone UNLOCKED
FRP UNLOCKED
I am the first owner of the tablet, so I was surprised to see that it was already unlocked. In any case, I tried the fastboot oem unlock command, and it returned this error:
FAILED (remote: password wrong)
3. I tried to proceed to TWRP flash on the assumption that the phone was already unlocked. But I get this error:
sending 'recovery' (23794 KB)....
OKAY [ 0.740s]
writing 'recovery'...
FAILED (remote: Command not allowed)
finished, total time: 0.740s
4. I tried relocking the bootloader, as per several XDA threads, before unlocking again. But I once again encounter an error:
FAILED (remote: stat not match)
I already contacted Huawei to make sure that the unlock code they sent me was correct, but I doubt that it'd be wrong because they probably just paste it after generating it in the system.
Any ideas how to proceed?
Interesting, first off if you want to check and see if you phone is BL is unlocked go to Settings, Developer Options and see if your OEM unlocking is grayed or doesn't move..if it doesn't move or grayed out then it's unlocked.. if it moves the it not unlocked.. check that your fastboot /adb are set up correctly. Though the easiest way to this ( unlocking the BL and flashng TWRP) would be to get Huawei Multi-Tool v8 by Team MT and use it,, ( grab the one in the Honor 8, as I know it does work) and make sure you ave the correct TWRP for your tablet..
lilbrat said:
Interesting, first off if you want to check and see if you phone is BL is unlocked go to Settings, Developer Options and see if your OEM unlocking is grayed or doesn't move..if it doesn't move or grayed out then it's unlocked.. if it moves the it not unlocked.. check that your fastboot /adb are set up correctly. Though the easiest way to this ( unlocking the BL and flashng TWRP) would be to get Huawei Multi-Tool v8 by Team MT and use it,, ( grab the one in the Honor 8, as I know it does work) and make sure you ave the correct TWRP for your tablet..
Click to expand...
Click to collapse
Thanks for pointing me the Huawei multi-tool. So I tried that, and as suspected, the device is still locked. I am able to toggle the OEM unlocking and the tool says so through the lock status (oem lock-state info LOCKED). I proceeded unlocking with the tool, but I received the same error: FAILED (remote: password wrong)
The unlock code doesn't seem to be the problem because the tool displayed the corresponding serial number and it was a match. So there's something preventing me from unlocking the bootloader--it's probably the same reason why the fastboot says "PHONE Unlocked" even though it actually isn't. Again, I can't do the relock trick because the device wouldn't accept the Huwei unlock code.
Thoughts?
Hmm, why do some of these seem to be so picky when it comes to unlocking.. The multi too will copy what ever code you but in, sorry for the questions just trying to help narrow it down.. in the developer section there are 3 things that need to be ticked,, OEM unlocking, USB debugging and and allow ADB debugging in charge only mode.. Maybe you software got out of wack.. read here ( https://forum.xda-developers.com/mediapad-m3/help/bricked-mediapad-m3-t3746893) as it may help.. Not sure if HiSuite can restore it.
OEM unlocking and USB debugging are "working" in the sense that I can send commands from the PC via USB. It's just that I can't properly unlock the phone. I updated the drivers to see if that's the problem, but I still encounter the same error. I basically couldn't move forward with the link you sent because the first step was to unlock the device and I couldn't get past that. When I try to unlock the error is still 'FAILED (remote: password wrong)'.
I've seen some threads from other Huawei devices that suggest rolling back the firmware, but this is the first time I'm trying to root this device. And it's still on Marshmallow, which is the version that came with the first release of the Mediapad M3, so basically there's nothing to roll back to.
Why not upgrade to 7 as that is where most of the newer threads are written for plus it will redo your boot loader... giving you a clean slate to work with..and that might be your issue..
I can't update to 7 because Huawei stopped providing updates for my region. I failed to mention that the reason why I'm trying to unlock the device is to change the region and upgrade to 7.
May I ask where you are?
From Southeast Asia, but the tablet was imported from China. I planned to convert it to the European version so I can at least upgrade to Nougat. I'm still stuck though.
So Huawei sent me a new unlock key and it works! Problem solved!
cescpistol said:
From Southeast Asia, but the tablet was imported from China. I planned to convert it to the European version so I can at least upgrade to Nougat. I'm still stuck though.
Click to expand...
Click to collapse
Imy model also seas... Has updated to nougat without changging to us.

Just a question about the bootloader

Hello there,this probably has been questioned a lot of times but I will ask it anyway.
I'm new to this so I researched a bit about the subject,already downloadead the files and everything is pretty much ready. The only thing that I can't do right now is the bootloader part,basically I put this code on the prompt "fastboot oem get_unlock_data" and all I get is this message "FAILED (remote: unknown command)".
So what should I do ? Is there an alternate command that I can try ?
My phone i a MediaTek and it's model is XT1763
I don't have much else to say so thank you for reading.
Are you in fastboot (bootloader mode) when you issue the command? Here's the procedure I followed.
Thanks that guide worked,apparently I didn't need the code from lenovo and could already unlock it

Bootloader re-locked and now "System Destroyed" with no solutions

Hi all, I had official MIUI Global 11 on Android 10 on a phone with unlocked bootloader and a recovery. I wanted to re-lock the bootloader, so I went to fastboot and I gave the command to lock it.
Obviously (but I didn't even imagine it) the devide DID lock, but now it doesn't start any longer. ""System destroyed" is the message.
What I want to get is one of these two results: having a working phone OR having everything erased.
What I have already tried is:
- installing a firmware via fastboot: failed because the bootloader is locked
- flashing single .img via fastboot: failed because the bootloader is locked
- erase partitions: failed because the bootloader is locked
- unlock again the phone via fastboot: failed
- unlock again the phone via Mi Unlock: failed because missing authorization in developer options
Let's add the fact that I don't have windows, but Mac, that reduces the available options.
ANY SUGGESTIONS?
You can use Platform tools in windows.As far as i know platform tools can be used both locked and unlocked bootloader.You can search on YouTube how to flash mi phones through platform tools.
francanna said:
Hi all, I had official MIUI Global 11 on Android 10 on a phone with unlocked bootloader and a recovery. I wanted to re-lock the bootloader, so I went to fastboot and I gave the command to lock it.
Obviously (but I didn't even imagine it) the devide DID lock, but now it doesn't start any longer. ""System destroyed" is the message.
What I want to get is one of these two results: having a working phone OR having everything erased.
What I have already tried is:
- installing a firmware via fastboot: failed because the bootloader is locked
- flashing single .img via fastboot: failed because the bootloader is locked
- erase partitions: failed because the bootloader is locked
- unlock again the phone via fastboot: failed
- unlock again the phone via Mi Unlock: failed because missing authorization in developer options
Let's add the fact that I don't have windows, but Mac, that reduces the available options.
ANY SUGGESTIONS?
Click to expand...
Click to collapse
I think that the only way to flash it successfully again is to use QPST ,but you need to open the phone remove battery and get 9008 port , check in YouTube.

image verification error, TWRP Install failed.

Hello, I'm new here so if I miss any Forum rules please let me know.
TL;DR: I unlocked the bootloader of my VNS-L31 with PotatoNV and now I get the Message FAILED (remote: 'image verification error')
So, i want to install a Custom ROM in order to get OTG Support for my Smartphone. I'm new to this but as I figured out I need to do the following Steps.
1. Unlock Bootloader using PotatoNV
2. Install TWRP
3. Root via SU
3. Install CustomRom via TWRP
I think I managed to unlock my bootloader as I get the "your device cant be trusted" message every time I boot. I can enter fastboot mode with ADB and my device is recognized when it's in fastboot mode. when I try now to install TWRP (i tried different versions) I get the following message:
J:\Smartphone\TWRP\platform-tools_r31.0.2-windows\platform-tools>fastboot flash recovery twrp-3.1.1-0-venus.img
Sending 'recovery' (24464 KB) OKAY [ 0.648s]
Writing 'recovery' FAILED (remote: 'image verification error')
fastboot: error: Command failed
Reading the Forums suggested to relock the Bootloader and then unlock it again in good old " did you turn it off and on again" manner. but when I googled how to relock and unlock I got the warning that a lot of devices cant be unlocked a second time. So should I try to relock it via fastboot ? if I do so, can I unlock it again with the new unlockcode i set in PotatoNV, or do I need to open my phone for Testpoint mode and unlock it with PotatoNV again?
so hopefully i didn't miss any necessary information and someone here can help me or point me in the right direction
greetings
Elfenfreund
PS: Pardon my Writing. It's late and my English is not very trained.
No need to relock. Just unlock it again using the code given by the Potato. Then try flashing again the image.

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