Any solution to unlock bootloader second time? - Asus ZenFone 4 Max Questions & Answers

Hi, I found my old Asus ZenFone 4 Max hard bricked from last time when I lock the bootloader after installing lineage OS. I leave the phone abandoned around 6 months since I already feel hopeless.
First I unlocked the bootloader, then flash lineage os recovery then lineage os.
After completing flashing lineage os, I locked the bootloader and it can't be unlocked anymore.
I tried to unlock the bootloader again but it receives an error. (Forgot the error long ago). Tried to flash stock ROM or recovery with bootloader locked also can't.
Send to service center probably cost more then the phone value, since it's not very good condition (screen crack) and old device.
Is there any way to solve it?
Thanks

Also, it can't be used any more. Stuck on fastboot screen but can't unlock bootloader.
Forgot to mention, X00HD

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Huawei p8 bootloader unlocked But oem greyed

Hi everyone.
So I am in a bit of a pickle. I unlocked bootloader and rooted phone few months ago. Phone started playing up. Did not have a backup, I know, stupid me... So had to do official install stock rom straight after booting phone. Another thing to point out, I have lost my unlock bootloader code and huawei have stopped giving them out. Now when I boot in fastboot it's noted as unlocked but the other one think protection something is locked. In developer options oem unlocking is greyed out. Every fastboot command comes back as failed. Tried reflashing twrp and its result is yet again failed. Twrp has gone after the new official rom update. Root has also gone. Any ideas would be really helpful. Tried dc unlocker but it's gone, lol. Thank you everyone.

Moto G5 plus XT1686 bootloop issue.

Hi Developers,
I unlocked bootloader of my Moto G5 plus XT1686 and installed a custom rom months back. Which worked good.
But last week i tried to return to stock rom and relock bootloater. Since i am not good at coding/commands, my device now bootloops. I am using a TWRP to flash the rom but failing since my device shows as FLASHING LOCKED. I even tried to UNLOCK the bootloader considering it is locked, it shows INVALID BOOT STATE. Moto/Lenovo website shows as BOOTLOADER NOT IN LOCK STATE.
I am very much worried and confussed. The device bootloader is UNLOCKED but behaves as LOCKED state. I went to few of the service centers and even they tried to flash a rom and all failed. They finally suggest me to change mother board which would cost arround 5k-8k and are not sure if that could fix this issue.
I am looking for a help from you developers to fix this or atleast need to find what is the issue and what hardware needs to be replaced.
was this issue resolved pls help

[SOS!!!] My Pixel doesn't boot!!!

Hi there:
I’ve got a second-hand Pixel 1 last week, I unlocked, installed TWRP and rooted yesterday, but I unrooted today because some reasons.
I did a wrong decision, I erased the phone by System Settings, and locked it.
After I locked it, when I boot it, it only have Google logo flash for about 0.1second then gone. I tried to flash the factory images from Google, but it requires unlock to flash it.
I even can’t unlock it now because I can’t get into the System to turn on “Allow unlock OEM loader”, so it got failed. I used fastboot OEM unlock and fast flashing unlock, they both doesn’t work.
I don’t really want to send the phone back to Google US because I doesn’t live in America, so it’s not really easy and really expensive to send it, and I also really need this phone because the battery of my old phone is almost dead. And the Google Support Team in my country/region says that I can’t send to the repair center locally because they only accept Pixel 3/3XL/3a/3aXL/4/4XL
Thanks the suggestions from you guys!
I have a similar issue.
I unlocked the bootloader via ADB but I couldn't even get a copy of TWRP to work at all. The phone also eventually stopped working on the stock install too but taking the option it presented of doing a full wipe and reset fixed at least THAT part.
Still can't get TWRP or Lineage up on it :/
Reboot to fastboot mode and flash stock recovery image (according to your os version).

Phone just crashed. Could it be because of an unlocked bootloader ?

I opened up the developer options on my Moto G Stylus and went under OEM Unlocking and selected the allow the bootloader to be unlocked option. That was either last week or a few weeks ago because I wanted to root it and put a custom rom on it. I didn't rooted it yet because I'm not sure what roms are good, I only had cyanogin mod roms on my other phones and I'm not sure which rom is the safest and best to use so I still use the stock rom. I turned on Pandora to play music before I went to sleep. When I woke up my phone was in some kind of recovery mode and said something like the operating system failed to boot. Two options were available, 1- to try booting again, and 2-factory reset the phone which would erase all data. I selected 1, and my phone booted up. Could this be because the bootloader is unlocked? Does having the bootloader unlocked leave it suspectable to being hacked? Could my phone have been hacked?
Switching OEM Unlocking is not enough to unlock, you then must on motorola unlock webpage paste code from your phone and, wait for unlock code in email, via fastboot with this unlock code doing finaly real umlocking...
k3dar7 said:
Switching OEM Unlocking is not enough to unlock, you then must on motorola unlock webpage paste code from your phone and, wait for unlock code in email, via fastboot with this unlock code doing finaly real umlocking...
Click to expand...
Click to collapse
Would selecting the bootloader option to be unlocked in the developer options make my phone more vulnerable to be hacked?
A few hours later my phone did the same thing and went into recovery mode saying that my phone could not load the OS and might be infected or something. I had the same options to either try to load the OS again or factory data reset the phone. How could this happen?
I factory data reset my phone this time. I just hope I don't have some kind of malware.
Mine was hacked like this. Changed stuff so it won't boot back to original. Got into system files and remote control my phone. Is there a way to get back to original without computer? It's useless now

Question Flash stock firmware and lock bootloader

HHello, I wanted to consult something before getting into a problem. I have the moto g100 with the challenge channel, since the Android 12 ota did not come out for this channel, I decided to install the Android 12 retail ota, Everything worked correctly, but now I want to install my original firmware which is RETAR and block the bootloader, so my question is the following, can I flash my original firmware and lock the bootloader?.
Yes if you flash ORGINAL ROM (Android Version) for your device you can LOCK bootloader for your device.
Lock the bootloader at your own risk, this forum has a thread full of people who have bricked their device after relocking.
Phone wouldn't boot into the system after bootloader locking back...
I wanted to help someone whose phone wouldn't boot into the system after bootloader locking back, phone hangs on a red warning. And in the process of experimenting myself got confused and got into the same situation. Unlocking the bootloader...
forum.xda-developers.com
The stock roms found on lolinet won't boot after relocking and you'll loose the ability to flash anything else. YOU HAVE BEEN WARNED! Also, you can't downgrade the bootloader. What this means is that if you flash older Android 11 stock image it may result in bootloop.
I have a G8 doha that was hard bricked a few years ago.. It did not show up in device manger at all, no matter how i tried. Not even the Qualcomm mode. This did happen after locking bootloader or change slot A/B. (Don't remember, sorry). The phone was totally dead, so it was just "archieved for later use".. Then one month ago i found a description on how to wake it up to qualcomm mode by shorting two points on pcb. I tried, and it did work. Phone showed up in device manager, and i flashed blankflash. After that i flashed stock rom. Phone is now working again. I had to do several tries to get it up running. The description on how to do it was not accurate, but i found a sequence to start it. Unfortunately i don't remember exactly. It is something with pushing/holding a button when connecting USB or shorting points on pcb.. Youtube link show how to do it..
GT
Somebody try relock bootloader on g100 and have succes ? I back to stock rom with Rescue and Smart Assistant tools but I am slightly afraid that the phone will not get up after relock the bootloader. :|
sp6ina said:
Somebody try relock bootloader on g100 and have succes ? I back to stock rom with Rescue and Smart Assistant tools but I am slightly afraid that the phone will not get up after relock the bootloader. :|
Click to expand...
Click to collapse
Yes I relock my bootloader on the Moto g100 the North American version. Right after I did it I tried to set up my phone and it wanted my last four digit Google pin code and if you didn't do it fast enough it kept rebooting so for a half hour I tried everything under the sun Google kept asking me I want to try another way. But I have two step verification on my Google account so it couldn't send me the code over my telephone number so after a couple tries using the recover my account option underneath which asked you like personal information like your name and everything it finally gave me three options of three different Google emails I have. I got my unlock code and unlock the bootloader without using a PC or a computer. I used bugjaeger. The premium app is well worth the $10 it works super easy and super efficient
sp6ina said:
Somebody try relock bootloader on g100 and have succes ? I back to stock rom with Rescue and Smart Assistant tools but I am slightly afraid that the phone will not get up after relock the bootloader. :|
Click to expand...
Click to collapse
Yes I relock my bootloader on the Moto g100 the North American version. Right after I did it I tried to set up my phone and it wanted my last four digit Google pin code and if you didn't do it fast enough it kept rebooting so for a half hour I tried everything under the sun Google kept asking me I want to try another way. But I have two step verification on my Google account so it couldn't send me the code over my telephone number so after a couple tries using the recover my account option underneath which asked you like personal information like your name and everything it finally gave me three options of three different Google emails I have. I got my unlock code and unlock the bootloader without using a PC or a computer. I used bugjaeger. The premium app is well worth the $10 it works super easy
sp6ina said:
Somebody try relock bootloader on g100 and have succes ? I back to stock rom with Rescue and Smart Assistant tools but I am slightly afraid that the phone will not get up after relock the bootloader. :|
Click to expand...
Click to collapse
Yes I relock my bootloader on the Moto g100 the North American version. Right after I did it I tried to set up my phone and it wanted my last four digit Google pin code and if you didn't do it fast enough it kept rebooting so for a half hour I tried everything under the sun Google kept asking me I want to try another way. But I have two step verification on my Google account so it couldn't send me the code over my telephone number so after a couple tries using the recover my account option underneath which asked you like personal information like your name and everything it finally gave me three options of three different Google emails I have. I got my unlock code and unlock the bootloader without using a PC or a computer. I used bugjaeger. The premium app is well worth the $10 it works super easy

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