We must find a way to unlock the bootloader.
How could we do?
Someone could help solve this problem?
I haven't seen anything that can do that and LG's boot-loader unlock tool only supports european G4 phones. I tried the Developer Options > Enable OEM unlock, but got a security error screen on boot when I tried flashing.
I was able to root with kingroot and install twrp which was the next best thing. You have to turn off the phone, then hold power + volume down, then release power for a second then when the lg logo appears then keep holding them both. In the factory reset menu, select (yes) perform factory reset twice and it will boot into twrp where you can flash roms and make backups.
When I installed TWRP and tried to boot into TWRP I got the "Secure booting error"..
How did you get into TWRP?
I use the H340AR
leandresca said:
We must find a way to unlock the bootloader.
How could we do?
Someone could help solve this problem?
Click to expand...
Click to collapse
http://forum.xda-developers.com/leon/help/official-marshmallow-lg-h340n-t3392900
Hello dear all,
I have managed to brick my LG G5 like an Old Mill Brick.
My LG G5 (lg g5 h850 titan) does not boot. It comes with an error message as follows: Your device is corrupt. It cannot be trusted and will not boot.
What I already did to Unbrick:
Tried to unlock the OEM. No way from USB Debugging as I cannot go into OS.
Tried unlock the OEM from fastboot (remote: oem unlock is not allowed).
Tried to flash some things like (boot.img, system.img) even adb sideload stuff. Nothing works. I cannot flash anything because (flashing not allowed) because OEM is not unlocked, but cannot unlock the OEM because it is not allowed. WHAT in the brick do I have to do now?
Cause of the brick of the bricks:
The LG G5 was on LineageOS, all stable and solid. When a prompt appeared telling me that I have to update the OS. So I was like yeah ok whatever. BUT, it did from OTA. I also had a specific LineageOS APP for updating the OS. After some minutes (updating) I immediately panic and started worrying. BECAUSE, I knew what time it was (my device is dead). I wanted to turn my phone off but it was already in Recovery (TWRP). So I just hit cancel. BUT after booting up the LG G5 that corrupt device error appeared and I cannot manage to get rid of it.
Please I need your help! I also watched and tried (2+ hours) to manage to solve this via Google and different links and Unbrick guides but nothing happens. I cannot unlock the OEM because it is not allowed. I cannot flash anystuff because the OEM is not unlocked.
Update: So, there is no Recovery System present. No stock Recovery, No TWRP. And I think no OS either. So only thing that is present is the bootloader screen smh.
Can you still get to TWRP?
firenemesis7 said:
Can you still get to TWRP?
Click to expand...
Click to collapse
No If I hold the volume down button and Power and when the LG Logo appears I release the power off and press again nothing happens. It goes again into that error. I can go in bootloader but can't do anything with adb or fastboot.
I think TWRP is gone too :/
You should be able to get into download mode. Hold the volume up button with phone fully powered down. While you hold the volume up button insert the usb cable. Then you can flash the full system kdz with LGUP
https://www.youtube.com/watch?v=_V7Mtd3eKzk
firenemesis7 said:
You should be able to get into download mode. Hold the volume up button with phone fully powered down. While you hold the volume up button insert the usb cable. Then you can flash the full system kdz with LGUP
https://www.youtube.com/watch?v=_V7Mtd3eKzk
Click to expand...
Click to collapse
Thank you very much! I didn't know I could do it in anotherway. Will definitely try this! Thanks again!
Hi there XDA community,
I am turning to you with a specific question that I have regarding the issue with my Xiaomi Redmi Note 3 from 2/2017.
I had an accident where the phone fell on the side directly on the Volume Down button and it was constantly pressed in. I used to have issues with waking up my screen as it would automatically switch off if I didn't press the Volume Up and Back buttons simultaneously. Otherwise the phone is still in full working condition and I managed to unstuck the Volume Down button since.
When I ended one phone call, the black screen wouldn't turn on no matter what, so I got frustrated and played with the buttons and entered the Fastboot mode. I didn't do anything there so I just left and turned the device back on normally.
I was prompted to enter my password, which is always the same 4 charachter all-numbers code and it wouldn't get recognized by the phone no matter what. I am sure I typed it in correctly.
Ever since, I have been locked out of the phone and am looking for options to gain access to it.
The Android Device Manager is of no help, I do not have any Forget Password buttons, my bootloader is locked as far as I know because I didn't change anything there and the USB debugging is disabled.
Do I stand any chance of accessing my data without losing it, perhaps with use of some special software tool or passcode remover?
I don't know exactly what my firmware is, but it probably is MIUI 8 or 7.
Thank you very much for your help and advice!
Wish you to end 2017 being your bestself possible!
Odinlo
Did you tried this ?
http://en.miui.com/thread-292962-1-1.html
Hey,
the Android Device Manager is of no use because the phone is too new to change the password.
Also the recovery mode is inaccessible because the bootloader is locked any my USB debugging is not enabled.
Can you help yourself with the Fastboot mode in any way?
Also, I don't understand why something like this would happen and what is the password now that the device demands.
Do you know of any software tool that would recover all the data after restoring the phone and deleting all the data?
Thank you very much!
Odinlo said:
Hey,
Do you know of any software tool that would recover all the data after restoring the phone and deleting all the data?
Thank you very much!
Click to expand...
Click to collapse
Wait , what kind off lock is on your device ?
1. Pattern lock
2. MiAccount Lock
3. Lock Screen Password
Here is a tool to remove password :
https://mega.nz/#!10UDXQTI!sZb9wjh07rGAsSbE2YpOWyuu-0Vi4fujbHvSTnyz_I8
Warning!!! I didn't check file against viruses so do check .
How to use:
https://www.youtube.com/watch?v=eDb9BNLmiJ4
Hi Teddy Lo,.
thanks for help, I really appreciate it. It is the Lock screen password on the device
Hello there!
I received my Poco F1 yesterday and set it up with all the apps and settings I wanted to use (including WhatsApp and Signal Backups with private keys). Unfortunately the phone didn't survive the day - after less than three hours the screen went black and since then stayed like that. Additionally, it heats up like nothing else whenever it is turned on. I tried holding power, power + vol up etc. - the phone seems to reboot and booting up again but the screen stays dark. As I live in the EU and bought the phone here I contacted the seller, who agreed on shipping a new device, but I still have to send back the old and broken one. That's where my problem begins:
- There's already a load of private data and information on the phone I do not want to give to the seller and everyone who might gets the phone in their hands afterwards
- The phone itself still seems to work. I can reach it via adb, reboot to bootloader, reach it via fastboot and reboot back to the operating system
-
Code:
adb shell pm clear xxx
and
Code:
adb shell am broadcast -a android.intent.action.MASTER_CLEAR
both yield a SecurityException
-
Code:
fastboot -w
yields
Code:
FAILED (remote: 'Erase is not allowed in Lock State')
- I do not want to unlock the device, as I don't want to give anyone any reasons to refuse this guarantee case.
Do you have an idea?
Thanks in advance!
Your warranty doesn't void on this device. It was confirmed by CEO Jai Mani. If you still concern for warranty you can later relock it. Use this command - "fastboot oem lock". So stay calm and try this.
Hi and thanks for your suggestion! It looks like I don't have any other choice. Could maybe anyone guide me through what happens when (my screen is completely dark after all )?
So, I can easily go into fastboot mode by doing a "adb reboot bootloader". I will then use the unlock tool to unlock the phone. Does anyone have an exact idea of what will happen next?
Will it reboot automatically or do I have to do it by myself? Will it stay in fastboot mode?
Will it try to set something up or anything else I should not abort after rebooting? How long will this take approximately?
Will all data be lost by only unlocking the phone or will I still be able to "adb shell" into the system after unlocking (w/o accepting the computer's key again of course)?
In case I got stuck, is there a reliable way to go from anywhere into fastboot mode again (to "fastboot -w" and relock)? Which button combo can I use for "completely turn the phone off" - is it the "3min power button" or the "power button and volume up" one? After "fastboot -w", how does the phone behave? Does it reboot automatically and does it do something after that I should not abort? If yes, how long will it take approximately?
I see that these are kind of difficult questions for people who could see what's going on, but after all it's pretty important for me because I can't
Thanks for your help!
robo1337 said:
Hi and thanks for your suggestion! It looks like I don't have any other choice. Could maybe anyone guide me through what happens when (my screen is completely dark after all )?
So, I can easily go into fastboot mode by doing a "adb reboot bootloader". I will then use the unlock tool to unlock the phone. Does anyone have an exact idea of what will happen next?
Will it reboot automatically or do I have to do it by myself? Will it stay in fastboot mode?
Will it try to set something up or anything else I should not abort after rebooting? How long will this take approximately?
Will all data be lost by only unlocking the phone or will I still be able to "adb shell" into the system after unlocking (w/o accepting the computer's key again of course)?
In case I got stuck, is there a reliable way to go from anywhere into fastboot mode again (to "fastboot -w" and relock)? Which button combo can I use for "completely turn the phone off" - is it the "3min power button" or the "power button and volume up" one? After "fastboot -w", how does the phone behave? Does it reboot automatically and does it do something after that I should not abort? If yes, how long will it take pictures approximately?
I see that these are kind of difficult questions for people who could see what's going on, but after all it's pretty important for me because I can't
Thanks for your help!
Click to expand...
Click to collapse
First unlocking bootloader takes 3 days. Then after unlocking your all data will be wiped and you automatically boot into the system. If anything goes wrong you can use Mi flash tool to flash miui again in fastboot mode. The most reliable way to boot into fastboot mode is to boot into recovery by pressing volume+ button + power button at the same time and then boot from there. I have never encountered that prob so I can't surely tell about that. Please tell me if it works.
robo1337 said:
Hi and thanks for your suggestion! It looks like I don't have any other choice. Could maybe anyone guide me through what happens when (my screen is completely dark after all )?
So, I can easily go into fastboot mode by doing a "adb reboot bootloader". I will then use the unlock tool to unlock the phone. Does anyone have an exact idea of what will happen next?
Will it reboot automatically or do I have to do it by myself? Will it stay in fastboot mode?
Will it try to set something up or anything else I should not abort after rebooting? How long will this take approximately?
Will all data be lost by only unlocking the phone or will I still be able to "adb shell" into the system after unlocking (w/o accepting the computer's key again of course)?
In case I got stuck, is there a reliable way to go from anywhere into fastboot mode again (to "fastboot -w" and relock)? Which button combo can I use for "completely turn the phone off" - is it the "3min power button" or the "power button and volume up" one? After "fastboot -w", how does the phone behave? Does it reboot automatically and does it do something after that I should not abort? If yes, how long will it take approximately?
I see that these are kind of difficult questions for people who could see what's going on, but after all it's pretty important for me because I can't
Thanks for your help!
Click to expand...
Click to collapse
As you seem to be interested in only removing the data (not recovering it), the bootloader unlock will wipe your phone completely and it will automatically boot again into the initial Setup screen where the first screen will be asking for the country. At that point simply power off the phone and you will be done. I am saying this from the personal experience of unlocking the bootloader of this phone.
Hi and thanks for your help! The unlocking & relocking process was completely flawless. Vol + Power Up seems to be the "Turn off"-Combo, by the way
Thanks again!
SamyakJ said:
First unlocking bootloader takes 3 days. Then after unlocking your all data will be wiped and you automatically boot into the system. If anything goes wrong you can use Mi flash tool to flash miui again in fastboot mode. The most reliable way to boot into fastboot mode is to boot into recovery by pressing volume+ button + power button at the same time and then boot from there. I have never encountered that prob so I can't surely tell about that. Please tell me if it works.
Click to expand...
Click to collapse
nokia c100 doesnt seem to recovery.img to boot recovery only fastboot mode
I was thinking of a way to block the bootloader, and I came up with something very basic, so please who can try the method, share whether it works or not. (This method was checked and it WORKS !!)
Warning: I am not a super developer, just one more user who wants to help the community
Warning 2: This Process will erase everything in its path, remember to make a backup of your internal memory.
This series of steps is aimed at inexperienced users, if you think you are missing or there are many steps, this guide is not for you.
Without more to say, let's start.
How to re-lock bootloader:
1. Turn off your device.
2. Press Bixby Volume down and connect your device to a PC to start the download mode (now you can release both buttons)
3. Read the text below on the Download Mode screen
to block or unblock the Bootloader.
4.- Long press the vol (- or +) button as best suits you.
LOCK BOOTLOADER:
5. Long press the volume up button ( ) until the computer is restarted (this will erase your data and restart automatically). :fingers-crossed:
Ready! Now you have a device with an OEM lock.
Good luck my friends!!!
chalofito said:
I was thinking of a way to block the bootloader, and I came up with something very basic, so please who can try the method, share whether it works or not. (This method was checked and it WORKS !!)
Warning: I am not a super developer, just one more user who wants to help the community
Warning 2: This Process will erase everything in its path, remember to make a backup of your internal memory.
This series of steps is aimed at inexperienced users, if you think you are missing or there are many steps, this guide is not for you.
Without more to say, let's start.
How to re-lock bootloader:
1. Turn off your device.
2. Press Bixby Volume down and connect your device to a PC to start the download mode (now you can release both buttons)
3. Read the text below on the Download Mode screen
to block or unblock the Bootloader.
4.- Long press the vol (- or +) button as best suits you.
LOCK BOOTLOADER:
5. Long press the volume up button ( ) until the computer is restarted (this will erase your data and restart automatically). :fingers-crossed:
Ready! Now you have a device with an OEM lock.
Good luck my friends!!!
Click to expand...
Click to collapse
Thank you for posting this. I've had this method work once before but i am in a bit of a pickle at the moment.
I no longer get the options to 'long press vol up' which i think is the key to re locking the bootloader. Have you or anyone else got any idea why that would be?
akkaria said:
Thank you for posting this. I've had this method work once before but i am in a bit of a pickle at the moment.
I no longer get the options to 'long press vol up' which i think is the key to re locking the bootloader. Have you or anyone else got any idea why that would be?
Click to expand...
Click to collapse
This was tested once and it worked, it was not tried for the second time .. What version of Compilation do you have?
chalofito said:
This was tested once and it worked, it was not tried for the second time .. What version of Compilation do you have?
Click to expand...
Click to collapse
It has definitely worked before but not having much luck now. Maybe the latest software update has blocked this method?
This is my current version. I'm in Australia.
View attachment 4767541
akkaria said:
It has definitely worked before but not having much luck now. Maybe the latest software update has blocked this method?
his is my current version. I'm in Australia.
View attachment 4767541
Click to expand...
Click to collapse
It's a shame, I'm sorry that this happens to you, we hope that in the future this will be solved, for the moment we have to wait. someone will come who finds a definitive solution.
chalofito said:
It's a shame, I'm sorry that this happens to you, we hope that in the future this will be solved, for the moment we have to wait. someone will come who finds a definitive solution.
Click to expand...
Click to collapse
Thanks for your help. Yes, hopefully soon someone will find a method.
akkaria said:
Thanks for your help. Yes, hopefully soon someone will find a method.
Click to expand...
Click to collapse
Can you tell what exactly you already did with your phone? Did you unlock bootloader, re lock bootloader, then unlocked it again and then actually rooted it? And now after you unrooted your phone you can not re lock bootloader?
I am asking because I suspect that you can not re lock you bootloader again after you actually have rooted your phone once. I am suspecting I only read a post from a guy who managed to re lock is bootloader but he never actually rooted his phone once. So in other words after you tripped knox (which seems to only happen when you install magisk) you may not be able to re lock you bootloader (ever) again.
SakazukiAka said:
Can you tell what exactly you already did with your phone? Did you unlock bootloader, re lock bootloader, then unlocked it again and then actually rooted it? And now after you unrooted your phone you can not re lock bootloader?
I am asking because I suspect that you can not re lock you bootloader again after you actually have rooted your phone once. I am suspecting I only read a post from a guy who managed to re lock is bootloader but he never actually rooted his phone once. So in other words after you tripped knox (which seems to only happen when you install magisk) you may not be able to re lock you bootloader (ever) again.
Click to expand...
Click to collapse
Yes!! You hit the nail on the head!! So i was able to re lock bootloader once before but i wasnt successful in rooting the phone. After i then successfully rooted the phone with Magisk i restored back to normal and no i cannot re lock the bootloader.
It seems as though a few people have said you can't re lock it after successfully rooting! Quite frustrating!!
akkaria said:
Yes!! You hit the nail on the head!! So i was able to re lock bootloader once before but i wasnt successful in rooting the phone. After i then successfully rooted the phone with Magisk i restored back to normal and no i cannot re lock the bootloader.
It seems as though a few people have said you can't re lock it after successfully rooting! Quite frustrating!!
Click to expand...
Click to collapse
I see. There is another method, that seems to work, tested by @robbo1947 that he explained here.
robbo1947 said:
Assuming you had the standard Samsung ROM (you hadn't flashed a custom ROM)
Change OEM switch while rooted, exit settings, no need to flash stock firmware.
Power off phone.
Press and hold Bixby and Volume down, whilst holding connect with USB cable to computer. Release buttons when Download screen appears.
Long press the Volume up.
At this stage, the phone will wipe the data and overwrite the Magisk modification then reboot.
You should now have an S10, standard boot screens, stock ROM and no root.
Click to expand...
Click to collapse
I did not check it myselff yet, but it worked for robbo1947. All credits goes to @robbo1947 !! Please let us know if that worked for you or not.
SakazukiAka said:
I see. There is another method, that seems to work, tested by @robbo1947 that he explained here.
I did not check it myselff yet, but it worked for robbo1947. All credits goes to @robbo1947 !! Please let us know if that worked for you or not.
Click to expand...
Click to collapse
I am going to have a go again in the next few days to prove to myself and others that it is possible to relock the bootloader after rooting. Will let you know.
Watch this space.
robbo1947 said:
I am going to have a go again in the next few days to prove to myself and others that it is possible to relock the bootloader after rooting. Will let you know.
Watch this space.
Click to expand...
Click to collapse
I look forward to your findings. As i am running my phone as my daily driver now i am hesitant to re root it if this method wont work. I have my fingers crossed though
samsung doesn't allow you to unlock and then lock back the device multiple times. It only works once, then your bootloader stay unlocked for ever.
I I had root and twrp on my s10 + but I quietly put the last nobrand ASE7 firmware back and I re-locked the bootloader without any difficulty I no longer have any warning messages at startup and in the developer options I have the oem option working like new.
akkaria said:
I look forward to your findings. As i am running my phone as my daily driver now i am hesitant to re root it if this method wont work. I have my fingers crossed though
Click to expand...
Click to collapse
Lebrun213 said:
samsung doesn't allow you to unlock and then lock back the device multiple times. It only works once, then your bootloader stay unlocked for ever.
Click to expand...
Click to collapse
OK, sorry for delay in getting back to this question of locking and unlocking the bootloader on the Galaxy S10.
During the last few days I have locked, unlocked, locked and unlocked again, probably 15 or 20 times to test various scenarios.
Please remember, each time you lock or unlock the bootloader all of your data is wiped.. any Root will also be gone. You will also be needing your current firmware.
This is for the Galaxy S10 without TWRP.
Scenario 1. Your phone is rooted with Magisk.
Go into Developers options and check OEM options, the switch must be ON (to the right). If it isn't turn it ON.
Turn off your phone. Press and hold the Bixby and Volume-down button, then connect with USB to your computer. (The cable shouldn't be connected until after you press the buttons).
Within seconds of USB connection the Download screen will appear. You will see 3 optiions, choose and Long press volume up and hold button until you see the 2 options at bottom of screen. Choose and hold volume up until screen goes off. Then the S10 logo screen will briefly apppear, before it flicks back to the Download screen with the words 'VBMETA: Error verifying vbmeta image etc' at the top, as the image below.
This is all good so far. Leave the phone exactly as it is with this screen showing and make sure the phone is still connected to the computer.
On your computer, fire up Odin3_v3.13.1, you can leave the Reboot option in Odin ticked. Locate your firmware on your computer and put the 4 file parts (BL, AP. CP and CSC) into Odin.
Let Odin finish.
The phone will reboot ready for setup.
The Unlocked bootloader warning screen will be gone.
Scenario 2. Your phone has been rooted but isn't now, and the greyed out OEM switch is ON
Easy, turn off your phone and proceed from the 2nd paragraph of Scenario 1.
Scenario 3 Your phone has been rooted but isn't now, and the greyed out OEM switch is OFF
Sorry, but in this situation, you are going to have to root your phone with Magisk as the OEM switch will only be available when rooted.
When rooted, proceed as Scenario 1.
Scenario 4 Your phone has never been rooted, and the greyed out OEM switch is ON i.e. you unlocked the bootloader but never proceeded to root the phone
Turn off your phone and proceed from the 2nd paragraph of Scenario 1.
If you want proof that I have locked and unlocked time and time again see HERE
:victory:
robbo1947 said:
OK, sorry for delay in getting back to this question of locking and unlocking the bootloader on the Galaxy S10.
During the last few days I have locked, unlocked, locked and unlocked again, probably 15 or 20 times to test various scenarios.
Please remember, each time you lock or unlock the bootloader all of your data is wiped.. any Root will also be gone. You will also be needing your current firmware.
Scenario 1. Your phone is rooted with Magisk.
Go into Developers options and check OEM options, the switch must be ON (to the right). If it isn't turn it ON.
Turn off your phone. Press and hold the Bixby and Volume-down button, then connect with USB to your computer. (The cable shouldn't be connected until after you press the buttons).
Within seconds of USB connection the Download screen will appear. You will see 3 optiions, choose and Long press volume up and hold button until you see the 2 options at bottom of screen. Choose and hold volume up until screen goes off. The S10 logo screen will briefly apppear, before it flicks back to the Download screen as the image below.
With the phone still connected to your computer, fire up Odin3_v3.13.1, you can leave the Reboot option in Odin ticked. Locate your firmware on your computer and put the 4 parts into Odin.
Let Odin finish. The phone will reboot and the Unlocked bootloader warning screen will be gone.
Scenario 2. Your phone has been rooted but isn't now, and the greyed out OEM switch is ON
Easy, turn off your phone and proceed from the 2nd paragraph of Scenario 1.
Scenario 3 Your phone has been rooted but isn't now, and the greyed out OEM switch is OFF
Sorry, but in this situation, you are going to have to root your phone with Magisk as the OEM switch will only be available when rooted.
When rooted, proceed as Scenario 1.
Scenario 4 Your phone has never been rooted, and the greyed out OEM switch is ON i.e. you unlocked the bootloader but never proceeded to root the phone
Turn off your phone and proceed from the 2nd paragraph of Scenario 1.
Click to expand...
Click to collapse
No dramas, thanks heaps for your reply.
So it seems I am in scenario 3 meaning I'll need to re root my phone which is fine. However, when I hold down the bixby and volume up and plug in I don't get the option to long hold volume up which I previously did. I only have press volume up or down. Is this because my bootloader is already unlocked? I should still be able to re root my phone in this scenario shouldnt i?
akkaria said:
No dramas, thanks heaps for your reply.
So it seems I am in scenario 3 meaning I'll need to re root my phone which is fine. However, when I hold down the bixby and volume up and plug in I don't get the option to long hold volume up which I previously did. I only have press volume up or down. Is this because my bootloader is already unlocked? I should still be able to re root my phone in this scenario shouldnt i?
Click to expand...
Click to collapse
Yep, your bootloader is unlocked.
When you have re-rooted and you go into Developer options you will be able to control the OEM switch and ensure it is ON.
Then when you get into Download mode you will see that option of LONG press Volume-up.
I've just added video proof to original post.
robbo1947 said:
Yep, your bootloader is unlocked.
When you have re-rooted and you go into Developer options you will be able to control the OEM switch and ensure it is ON.
Then when you get into Download mode you will see that option of LONG press Volume-up.
I've just added video proof to original post.
Click to expand...
Click to collapse
Awesome. Will give it a go in the next day or two and report back but given your success I'm hoping I'll have the same.
Cheers
akkaria said:
Awesome. Will give it a go in the next day or two and report back but given your success I'm hoping I'll have the same.
Cheers
Click to expand...
Click to collapse
Don't forget the :good:
robbo1947 said:
Don't forget the :good:
Click to expand...
Click to collapse
You sir, are my hero. It all worked perfectly and i no longer get the bootloader warning screen and my bootloader is now relocked!!
For anyone else having this problem, i too can confirm that this method works. The only issue i had was that for some reason, i was stuck on the Samsung flashing boot screen for nearly half an hour. A simple reboot into recovery(hold power and volume down for 7 seconds to shut down and then quickly hold power, vol up and bixby) and wipe factory data then system reboot fixed it.
I can also confirm that after doing this and re locking the bootloader, i now have access to all apps that i was previously having issues with and my google play store recognises my devices as certified.
I now have a fully working and functional device. Thank you again.
if i revert to stock rom after root and samsung status says official and relock bootloader will be able to get otas again???