unlock bootloader on a bricked device - Transformer TF300T Q&A, Help & Troubleshooting

hello
my asus is bricked but its bootloader is locked for no reason(it was unlocked before)
so i wanted to ask for a guide how to unlock the bootloader on a bricked device(if its possible) with fastboot or adb

aviv903 said:
hello
my asus is bricked but its bootloader is locked for no reason(it was unlocked before)
so i wanted to ask for a guide how to unlock the bootloader on a bricked device(if its possible) with fastboot or adb
Click to expand...
Click to collapse
A bootloader cannot relock itself even after a brick, so the problems are most likely caused by the brick itself. How did you brick your tablet?

cmendonc2 said:
A bootloader cannot relock itself even after a brick, so the problems are most likely caused by the brick itself. How did you brick your tablet?
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i cant remmeber
the only thing that i know is that when i am tring to flash something its flashing and then stucks
after that i must reboot the bootloader and the flashed thing has gone

Related

[Q] Does boot.img can brick bootloader

if we flash boot.img can we brick the bootloader. or bootloader need another type of img file. if bootloader image need another img file what if i flash everything like system/boot/and other but le bootloader and brick my phone does this mean it is a sot brick and i can boot into bootloader and flash stock.
last thing if bootloader need another img file so why do we even risk to flash bootloader why we need to modify it. and if we brick bootloader can we fix it or sony may be able to fix it.
android-vinay said:
if we flash boot.img can we brick the bootloader. or bootloader need another type of img file. if bootloader image need another img file what if i flash everything like system/boot/and other but le bootloader and brick my phone does this mean it is a sot brick and i can boot into bootloader and flash stock.
last thing if bootloader need another img file so why do we even risk to flash bootloader why we need to modify it. and if we brick bootloader can we fix it or sony may be able to fix it.
Click to expand...
Click to collapse
Boot.img cant brick bootloader.
There is no img file for bootloader.
hell_lock said:
Boot.img cant brick bootloader.
There is no img file for bootloader.
Click to expand...
Click to collapse
i,ve seen some forms were people brick there bootloader. how do they brick bootloader. so is that mean in any cause we can,t permently damage our phone with flashing.(insted of hardware damages that kernel can cause)

Nexus 5 stuck in bootloop

Hi. My Nexus 5 is stuck at the flying dots after Lollipop OTA update. Already try factory reset. Can´t connect to my Lap (running Windows 10) because it says in the device manager: Unknown USB Device (Device Descriptor Request Failed), so I can´t manually update the driver and can´t access it with ADB and Fastboot tool. The device has no USB debugging enabled. In the old computer where I used to connect the device and has the drivers installed says the same thing in device manager as my new laptop. Please help.
So you can't boot into fastboot using the button combination?
Hi. Thanks for your reply. I can boot into fastboot with the buttons. I entered in recovery mode and do a factory reset but still stuck at flying dots.
Is the bootloader unlocked?
audit13 said:
Is the bootloader unlocked?
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Click to collapse
No, is locked
Here'';s a test: boot into fastboot and unlock the bootloader, reboot the phone into fastboot and see if the bootloader remains unlocked. If it remains unlocked, try flashing a stock ROM since you already did the factory reset.
audit13 said:
Here'';s a test: boot into fastboot and unlock the bootloader, reboot the phone into fastboot and see if the bootloader remains unlocked. If it remains unlocked, try flashing a stock ROM since you already did the factory reset.
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Click to collapse
Is there a way to unlock the bootloader without using a PC?
Not sure as I gave always used a pc to unlock the bootloader.
Was the bootloader unlocked before and it happen to relock itself?
audit13 said:
Not sure as I gave always used a pc to unlock the bootloader.
Was the bootloader unlocked before and it happen to relock itself?
Click to expand...
Click to collapse
No, always locked. I only installed OTA updates.
OTA updates will always work with an unlocked bootloader as long as the phone is running a stock recovery and is not rooted.
I asked about the unlocked bootloader because a bootloader that relocks itself after being unlocked in a good indication that the motherboard's emmc is defective and the motherboard needs to be replaced.
audit13 said:
OTA updates will always work with an unlocked bootloader as long as the phone is running a stock recovery and is not rooted.
I asked about the unlocked bootloader because a bootloader that relocks itself after being unlocked in a good indication that the motherboard's emmc is defective and the motherboard needs to be replaced.
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Click to collapse
I never rooted or do anything to the phone, just OTA. Is dead anyway. Can´t do anything to fix it.
You don't have access to a computer to unlock the bootloader? I ask because an unlocked bootloader is required to flash a stock ROM.
audit13 said:
You don't have access to a computer to unlock the bootloader? I ask because an unlocked bootloader is required to flash a stock ROM.
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Click to collapse
I do but can´t do it. Is not detected in my laptop, my laptop send my an error that says that is not working properly and if I go to device manager it says: Unknown USB Device, and can´t update the driver. So is not detected in the minimal ADB tool and can´t unlock the bootloader.
Maybe try another computer, USB cable, USB port, or OS? Could the USB port be damaged?
audit13 said:
Maybe try another computer, USB cable, USB port, or OS? Could the USB port be damaged?
Click to expand...
Click to collapse
Turns out the micro USB port was damaged and that´s why any computer was able to recognize the Nexus. It was replaced. Now I fixed the persist partition problem and booting for the first time in Marshmallow . Thank you so much for your replies. Take care
Glad you got the phone working. We're all here to help.

[Completed] Moto G 3rd Gen bricked or not bricked???

Hi,
My phone went into a boot loop.
I can access the fastboot menu but the device is locked, I obviously now cannot enter developer options to unlock it
When means I can't unlock the bootloader, and without unlocking the bootloader I can't reflash the device. Bit of a loop of death
Any suggestions or is it a door wedge?
JOEBOUK said:
Hi,
My phone went into a boot loop.
I can access the fastboot menu but the device is locked, I obviously now cannot enter developer options to unlock it
When means I can't unlock the bootloader, and without unlocking the bootloader I can't reflash the device. Bit of a loop of death
Any suggestions or is it a door wedge?
Click to expand...
Click to collapse
Hello and welcome to XDA-developers!
You can follow this guide to flash stock firmware through fastboot. If you have any doudts just report!

Help!!! Bricked device

I was trying to unroot I was on 9.0.4 and had magisk 17.1 and no twrp since i updated from 9.0.3 or whatever update was before. I factory reset and had no more root, and no twrp. I still had a unlocked bootloader so I went to adb and locked it and then it rebooted and gave me the red message "your device is corrupt and will not boot." it doesnt boot at all to anything not even recovery and I am just in fastboot. I tried MSMdownloadtool but it doesnt work. I am in windows test mode and tried but it would not show up on the msmdownloadtool. It doesnt connect. Also in adb it does not show up. Help me!!!!
it says bootloader is locked now in fastboot though i cannot boot in to anything
i just unlocked through fastboot so now im still stuck with just a unlocked bootloader
ChrisChris123 said:
i just unlocked through fastboot so now im still stuck with just a unlocked bootloader
Click to expand...
Click to collapse
install this - https://forum.xda-developers.com/oneplus-6/how-to/rom-stock-fastboot-roms-oneplus-6-t3796665
ChrisChris123 said:
i just unlocked through fastboot so now im still stuck with just a unlocked bootloader
Click to expand...
Click to collapse
Msm download should work now as well with your bootloader unlocked
ChrisChris123 said:
i just unlocked through fastboot so now im still stuck with just a unlocked bootloader
Click to expand...
Click to collapse
MSM download will work.
Just download appropriate Qualcomm drivers before proceeding.
Use Volume Up while connecting to PC.
MSM should detect the device connected in any of COM ports.
Just go to this thread https://forum.xda-developers.com/oneplus-6/how-to/tool-msmdownloadtool-v4-0-international-t3798892 and follow procedures to recover your phone just like how it is when you bought your device. Also, it will lock your bootloader.

Question Failed to Lock bootloader

Hello
So I followed instructions for relock the bootloader but I think I made a mistake now I'm in a big big mess :/
I got a message "Your device is corrupt can't boot", thing is I wasn't rooted anymore I flash some file before relock the bootloader.
The thing is I don't have access to the Fastboot anymore no commands working so no EDL.
The only thing I have access is the Start/Restart Bootloader/Restart recovery
So I wanted to know is there a solution of do I need to contact asus and pay for repair.
Thanks in advance

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