Database Develop

[Q] Stuck in Bootloader

After flashing successfully viper rom after a full data wipe my phone is now stuck in the Bootloader screen. I can't get to recovery, I can't reboot, and factory resetting does nothing. Help?

cknuth said:
After flashing successfully viper rom after a full data wipe my phone is now stuck in the Bootloader screen. I can't get to recovery, I can't reboot, and factory resetting does nothing. Help?
Click to expand...
Click to collapse
What happens when u choose reboot in fastboot mode in the bootloader??

cknuth said:
After flashing successfully viper rom after a full data wipe my phone is now stuck in the Bootloader screen. I can't get to recovery, I can't reboot, and factory resetting does nothing. Help?
Click to expand...
Click to collapse
Can you reboot into recovery again and enter to fastboot mode?

Can go between fast boot and the Bootloader menu but if I hit reboot, it just comes back to Bootloader. If I pick recovery it just flashes for a second and comes back to Bootloader. I am S-off btw.

cknuth said:
If I pick recovery it just flashes for a second and comes back to Bootloader. I am S-off btw.
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Click to collapse
fastboot erase cache

nkk71 said:
fastboot erase cache
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Click to collapse
Computer wont recognize device. While I can enter fastboot mode it does not go to fastboot usb mode when I plug it in and fastboot only will "waiting for device"

cknuth said:
Computer wont recognize device. While I can enter fastboot mode it does not go to fastboot usb mode when I plug it in and fastboot only will "waiting for device"
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Click to collapse
OS, and hboot versions? (and if you're on Windows what does Device Manager show?)

nkk71 said:
OS, and hboot versions? (and if you're on Windows what does Device Manager show?)
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Click to collapse
unfortunately my HBOOT is 1.44 (I just now read that it needs to be 1.55) My OS is Win 8.1. My work computer is Vista though.
device manager shows nothing connected via USB

cknuth said:
unfortunately my HBOOT is 1.44 (I just now read that it needs to be 1.55) My OS is Win 8.1. My work computer is Vista though.
device manager shows nothing connected via USB
Click to expand...
Click to collapse
if you have a USB stick, just make an Ubuntu Live USB (no need to install, you just make it, then boot the laptop/pc from the USB), check my guide under FAQ #5 (i think) it's very easy and ubuntu doesn't have issues with hboots, drivers, etc...

nkk71 said:
if you have a USB stick, just make an Ubuntu Live USB (no need to install, you just make it, then boot the laptop/pc from the USB), check my guide under FAQ #5 (i think) it's very easy and ubuntu doesn't have issues with hboots, drivers, etc...
Click to expand...
Click to collapse
ok so the guide walks me up to the point of installing fastboot for unbuntu using a couple cmd lines but for my specific situation will I need any files saved in specific locations? I have never used Ubuntu or Linux before so youll have to bear with me.

Ok so im in Ubuntu, I think I have the guide pretty much figured out, but It still doesnt want to detect my device. I installed ADB according to the guide, but "sudo fastboot devices" comes up blank and the phone only says "fastboot" not "fastboot usb"
entering the command to flash CWM gives me the same waiting for device message. I have tried multiple USB cables as well.

cknuth said:
Ok so im in Ubuntu, I think I have the guide pretty much figured out, but It still doesnt want to detect my device. I installed ADB according to the guide, but "sudo fastboot devices" comes up blank and the phone only says "fastboot" not "fastboot usb"
entering the command to flash CWM gives me the same waiting for device message. I have tried multiple USB cables as well.
Click to expand...
Click to collapse
the phone has to say FASTBOOT USB, otherwise it's a problem with the port (phone/PC/cable).
ubuntu doesn't have driver issues, but when you connect your phone to the PC, it has to change from FASTBOOT to FASTBOOT USB.

nkk71 said:
the phone has to say FASTBOOT USB, otherwise it's a problem with the port (phone/PC/cable).
ubuntu doesn't have driver issues, but when you connect your phone to the PC, it has to change from FASTBOOT to FASTBOOT USB.
Click to expand...
Click to collapse
It doesnt change, so then its likely something with the system partition as it relates to the USB port? Because the port was working fine until the failed flash. But what it sounds like is this is a brick?

cknuth said:
It doesnt change, so then its likely something with the system partition as it relates to the USB port? Because the port was working fine until the failed flash. But what it sounds like is this is a brick?
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Click to collapse
doesn't sound like a brick at all, as long a hboot (ie bootloader is fine) no brick should be involved.
but i have to call it a night, hopefully someone will be along shortly, and take over... (timezones ) take it ease, DO NOT PANIC, DO NOT RUSH things!!

Cool, all your help is greatly appreciated. So I should hold off on the trip to the phone store?

Any other ideas to get communication to the phone?

Different Computer, USB Port, and USB Cable. Without saying FASTBOOT USB on the phone, can't do anything.

Fastboot Flash <remote failure>

I was on my phone and an app closed. Then it closed again when I tried to re-open it. Third time's the charm, it closed again and then google services stopped. Then my phone shut off. I wouldn't turn on, so I had to do the power button+volume down to get into the bootloader menu. I tried to boot up and was stuck with a bootloop. I downloaded a factory image and the latest android sdk.
So here is where I hit the issue. No matter what command I issue "fastboot flash bootloader bootloader.img" or even "fastboot format cache" I get the same error "Failure <remote failure>".
I tried a different image to see if that was the issue and it didn't help. The device is being detected through fastboot. Any ideas?

melgibson666 said:
So here is where I hit the issue. No matter what command I issue "fastboot flash bootloader bootloader.img" or even "fastboot format cache" I get the same error "Failure <remote failure>".
I tried a different image to see if that was the issue and it didn't help. The device is being detected through fastboot. Any ideas?
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Click to collapse
My idea is that the bootloader is locked.

Bad cable or USB port perhaps or drivers not installed properly. The result of these can often be fastboot devices will show the device as connected yet be unable to flash.

NLBeev said:
My idea is that the bootloader is locked.
Click to expand...
Click to collapse
It is not.
danarama said:
Bad cable or USB port perhaps or drivers not installed properly. The result of these can often be fastboot devices will show the device as connected yet be unable to flash.
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Click to collapse
I uninstalled and reinstalled the drivers to be sure, used the original USB cable the phone came with, and tried 3 different USB ports. Still not working.

melgibson666 said:
It is not.
I uninstalled and reinstalled the drivers to be sure, used the original USB cable the phone came with, and tried 3 different USB ports. Still not working.
Click to expand...
Click to collapse
Please screenshot the error.

melgibson666 said:
. . .Bootloader unlocked
. . .reinstalled the drivers to be sure,
. . .used the original USB cable. . .
. . .tried 3 different USB ports . . .
. . .fastboot detected the device.
Still not working.
Click to expand...
Click to collapse
The quotes from you posts gave me the impression that the hardware is OK.
Probably the drivers on your PC are also OK.
I assume the command 'fastboot devices' responded a device ID.
Other issues could be:
- the dosbox and fastboot commands on the PC are not started as administrator;
- the driver on the pc is an adb-driver and not an adb combined driver;
- the version of fastboot is obsolete;
- images flashed before were corrupt;
Possible actions:
Make sure the fastboot and also adb files including the dll's are up to date.
Check if the command 'adb devices' works.
Try to adb sideload a (stock) rom.

help with unlocking the bootloader and rooting the latest version H811-20p

Hi,
I looked all over the place but could not find a way to unlock the bootloader of the latest version of my device. Currently running Android 6.0 H81120p and rooting this version as well!

hammy88 said:
Hi,
I looked all over the place but could not find a way to unlock the bootloader of the latest version of my device. Currently running Android 6.0 H81120p and rooting this version as well!
Click to expand...
Click to collapse
i recommend for you to KDZ 20p refurbished..
and heres the instruccions same as 20i
http://forum.xda-developers.com/tmobile-g4/development/stock-h811-20i-images-kdz-flashable-t3308227

i tried but its not working as i get stuck on waiting for device after i type the command to reboot to bootloader, installed google usb drivers , lg drivers and all but nothing seemed to be fixing the issue

hammy88 said:
i tried but its not working as i get stuck on waiting for device after i type the command to reboot to bootloader, installed google usb drivers , lg drivers and all but nothing seemed to be fixing the issue
Click to expand...
Click to collapse
did you click on screen when you gave the command to go into fastboot it shows some sort of numbers and leters and asks you if you want to allow phone .??/ did you

Yes I did allow the computer to have access to the phone, when i typed the command to reboot to bootloader it did, but then when i type the command to fastboot oem unlock it gets stuck on waiting for any device. I tried doing it again just to check, after i get to bootloader, i typed adb devices it doesn't show any device thats connected

hammy88 said:
Yes I did allow the computer to have access to the phone, when i typed the command to reboot to bootloader it did, but then when i type the command to fastboot oem unlock it gets stuck on waiting for any device. I tried doing it again just to check, after i get to bootloader, i typed adb devices it doesn't show any device thats connected
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Click to collapse
adb reboot bootloader (phone reboots to bootloader)
fastboot oem unlock (this wipes ALL data!!)
debugging tick and unlock oen in dev options.?

raptorddd said:
adb reboot bootloader (phone reboots to bootloader)
fastboot oem unlock (this wipes ALL data!!)
debugging tick and unlock oen in dev options.?
Click to expand...
Click to collapse
I checked the oem unlock, and the USB debugging thing is checked as well. Developers Options is on but same issue. I installed the latest USB drivers, installed Google USB drivers. I went to device Manger and I can't see that my device is even connected!

hammy88 said:
I checked the oem unlock, and the USB debugging thing is checked as well. Developers Options is on but same issue. I installed the latest USB drivers, installed Google USB drivers. I went to device Manger and I can't see that my device is even connected!
Click to expand...
Click to collapse
can try another computer maybe. i use the drivers from LGUP..
am afraid i do not know how to proceed from here. am pretty sure you are not alonei gave read someting similar but.. i didnt pay attention

I tried 3 other computers , did not help resolve the issue

hammy88 said:
I tried 3 other computers , did not help resolve the issue
Click to expand...
Click to collapse
i came across this try it.
http://forum.xda-developers.com/showpost.php?p=69339003&postcount=2

Use Linux dude, also try different cables. My stock g4 came with a bad cable that only charged.

I've had exactly the same problem as hammy88. Is what is referred to as "fastboot mode" the same as download mode? I know it's relatively easy to get into download mode. But "adb reboot bootloader" doesn't work for me.

Fastboot mode ≠ Download mode
If you did tick "Enable OEM unlock" , and adb reboot bootloader doesn't work, then I guess is BL is locked now.

I tried the method , i found that Android Bootloader does not have a green light, so i went to device manager to try to update the driver but it wasn't even there, clicked on view to show the hidden items or whatever then found android device, when i clicked update the driver i could not find the Google fastboot thing to update it with, all i got was either LG usb or ADB interface even thoough i downloader google fastboot usb drivers few days ago

hammy88 said:
I tried the method , i found that Android Bootloader does not have a green light, so i went to device manager to try to update the driver but it wasn't even there, clicked on view to show the hidden items or whatever then found android device, when i clicked update the driver i could not find the Google fastboot thing to update it with, all i got was either LG usb or ADB interface even thoough i downloader google fastboot usb drivers few days ago
Click to expand...
Click to collapse
Brother, be calm. Find the fastboot drivers. And update.
You will figure it out. Just do it.

MI 9 fastboot problem

Hi everyone,
I'm having some problems with fastboot mode, 2 computers don't recognize my MI9 in fastboot mode.
I tried to install and reinstall adb & fastboot drivers but nothing, I cannot unlock the bootloader.
Someone has a solution?
Thanks in advance

Have you enabled Debug USB?

Potato997 said:
Have you enabled Debug USB?
Click to expand...
Click to collapse
yes.
In adb mode the phone is recognized, but in fastboot not

Did you already tried some other USB ports or cables?
Try that.
Use
adb reboot bootloader
then as soon as it reboots try again with
fastboot devices

Potato997 said:
Did you already tried some other USB ports or cables?
Try that.
Use
adb reboot bootloader
then as soon as it reboots try again with
fastboot devices
Click to expand...
Click to collapse
Tried now with the original cable... it works!!!
Thank you very much!!!!

You install fastboot rom with locked bootloader or unlocked?

Boooader locked in developer options but root working fine

Developer option shows bootloader as locked but after reboot bootloader shows as unlocked . twrp working but Fastboot not working so I'm afraid I might brick my device as I can't flash fastboot rom. Please help.

I wanna know what you mean by 'Fastboot not working'. Does it mean you can't boot into fastboot mode, or does it mean you can't access fastboot commands on your pc?
Also i wanna know, while unlocking Bootloader. Did you used commands
Code:
fastboot oem unlock
and
Code:
fastboot oem unlock_critical
?

The device does boot into fastboot but doesnt respond to any fastboot command
It doesn't even show up on typing fastboot device
I unlocked the bootloader using miunlocktool
But the device doesnt even show up in the tool

pythonner said:
The device does boot into fastboot but doesnt respond to any fastboot command
It doesn't even show up on typing fastboot device
I unlocked the bootloader using miunlocktool
But the device doesnt even show up in the tool
Click to expand...
Click to collapse
If it's not responding to fastboot commands I worry that if correct drivers are installed on your pc.
Plug-in ur device while in fastboot mode to your pc.
Open Mi Unlock tool(this works very first time, you don't even have to install this tool). There's a setting icon on top right corner.
A dialogue box will appear, displaying to install drivers.
Install 'em. It will ask you to remove and plug-in your device again.
Now, download the platform tools file.
Open cmd in the platform tools folder.
Now try using fastboot commands.

It's same for me.
You can ignore that safely.

eleven.co said:
If it's not responding to fastboot commands I worry that if correct drivers are installed on your pc.
Plug-in ur device while in fastboot mode to your pc.
Open Mi Unlock tool(this works very first time, you don't even have to install this tool). There's a setting icon on top right corner.
A dialogue box will appear, displaying to install drivers.
Install 'em. It will ask you to remove and plug-in your device again.
Now, download the platform tools file.
Open cmd in the platform tools folder.
Now try using fastboot commands.
Click to expand...
Click to collapse
I updated the usb driver but unlock tool can't even detect the devices and when I type fastboot devices in platform tools the device is also not detected
I'm afraid of installing custom roms because if I brick it I will not be able to even flash the official fastboot rom

VD171 said:
It's same for me.
You can ignore that safely.
Click to expand...
Click to collapse
Actually when I type fastboot devices in platform tools the device is not even detected. So I'm afraid that if I flash custom rom and brick it I will be unable to flash even the official fastboot rom.

pythonner said:
I updated the usb driver but unlock tool can't even detect the devices and when I type fastboot devices in platform tools the device is also not detected
I'm afraid of installing custom roms because if I brick it I will not be able to even flash the official fastboot rom
Click to expand...
Click to collapse
Boot your phone, connect through USB to PC. Now check in Windows File Explorer. Is your device visible there?
If not, open Device Manager and you'll find something with the name adb (You can go through this guide). In my case it was under Acer. Just update those drivers manually and see if your device is visible now.

eleven.co said:
Boot your phone, connect through USB to PC. Now check in Windows File Explorer. Is your device visible there?
If not, open Device Manager and you'll find something with the name adb (You can go through this guide). In my case it was under Acer. Just update those drivers manually and see if your device is visible now.
Click to expand...
Click to collapse
the devices shows up in file explorer and device manger when its turned on but after putting in fastboot mode the platform tools cant detect the device

pythonner said:
the devices shows up in file explorer and device manger when its turned on but after putting in fastboot mode the platform tools cant detect the device
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Click to collapse
This is sad. Try fiddling around. I am unable to identify what could be the possible reason behind non-detection of device over platform tools as there are many. Maybe go through this article. It has various methods to fix non - detection of device.

eleven.co said:
This is sad. Try fiddling around. I am unable to identify what could be the possible reason behind non-detection of device over platform tools as there are many. Maybe go through this article. It has various methods to fix non - detection of device.
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Click to collapse
Now developer options is showing as unlocked and adb is also working good
but fastboot is still not working when I type fastboot devices It returns nothing

eleven.co said:
This is sad. Try fiddling around. I am unable to identify what could be the possible reason behind non-detection of device over platform tools as there are many. Maybe go through this article. It has various methods to fix non - detection of device.
Click to expand...
Click to collapse
What could be possible explanation to adb working but fastboot not working. The usb cable is tight and bootloader is unlocked even in developer options

eleven.co said:
This is sad. Try fiddling around. I am unable to identify what could be the possible reason behind non-detection of device over platform tools as there are many. Maybe go through this article. It has various methods to fix non - detection of device.
Click to expand...
Click to collapse
I just realised that I flashed twrp using the root app flashify. Could that be the reason for root not working

VD171 said:
It's same for me.
You can ignore that safely.
Click to expand...
Click to collapse
If you're rooted and have magisk hide enabled, it's normal, Magisk spoofs locked bootloader to pass safetynet in MIUI