Database Develop

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
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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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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.?
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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!
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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
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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.

While unlocking le2 bootloader though AIO toolkit getting waiting for device

Hi Guys,
When i try to unlock my le 2 bootloader through AIO toolkit i am getting error waiting for device then nothing happens.:crying:
I am on win 10.

Guys please help

Same problems found

Boot Le2 In To Fastboot Mode Manually

Run fastboot as administrator
When opening aio toolkit, open it as administrator
Hope that helps

If u are using windows the device is failed to find the driver so manually install adb drivers after that connect the phone then it will search for driver and it will say not found so got device manager and click le2 and u will find adb with ? Mark open it and press update driver and press manual search and type c drive . this search help you install adb drive

Prateekmvd​ said:
Same problems found
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Click to collapse
Google bootloader driver needed to be installed to run fastboot commands.My win 10 automatically downloaded google bootloader drivers after that i can run fastboot commands.

Just reboot your device manualy in boot loader by pressing power button + volume down ..And don't forrget to turn on usb debugging and ome unlock which you can find in developer menu

unlock bootloader

With your phone on, make sure under developer options oem unlocking is allowed. . .
Then plug in the device to the computer....
Time for the fun to begin....
In ADB
Adb reboot bootloader (it takes your phone to bootloader mode)
Fastboot flashing unlock (warns you not to)
Click Yes when prompted on phone. (YAY!!!)
Please don't forget to save anything you need from ur phone , unlocking your bootloader will fully wipe your device ?

Quick question, Is it supposed to just be text on the bottom left that says fastboot mode?. I've done this on a couple of other phones but this is the first time I haven't seen a menu, also when I run fastboot flashing unlock I'm stuck on fastboot flashing unlock.

TheRedPandaSSN said:
Quick question, Is it supposed to just be text on the bottom left that says fastboot mode?. I've done this on a couple of other phones but this is the first time I haven't seen a menu, also when I run fastboot flashing unlock I'm stuck on fastboot flashing unlock.
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Click to collapse
Yes fastboot mode ... On the left bottom.
Do u have mediatek drivers installed ?
Did u go into developer options and click on the allow oem unlocking ?

greeneyez15o said:
Yes fastboot mode ... On the left bottom.
Do u have mediatek drivers installed ?
Did u go into developer options and click on the allow oem unlocking ?
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Click to collapse
I believe I have them installed but I'll try again, thanks.

TheRedPandaSSN said:
I believe I have them installed but I'll try again, thanks.
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Click to collapse
Edit: I've tried a couple of drivers but none seem to work.

TheRedPandaSSN said:
Edit: I've tried a couple of drivers but none seem to work.
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Click to collapse
https://androidmtk.com/download-mtk-driver-auto-installer
Try this

Tied all sorts of drivers but no luck. I'm stuck in fastboot <waiting for device>. Any suggestions?

USB debugging
ycgr2002 said:
Tied all sorts of drivers but no luck. I'm stuck in fastboot <waiting for device>. Any suggestions?
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Click to collapse
Have you enabled USB DEBUGGING?

ycgr2002 said:
Tied all sorts of drivers but no luck. I'm stuck in fastboot <waiting for device>. Any suggestions?
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Click to collapse
Here

fastboot does not respond to commands
brunkonjaa said:
Here
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Click to collapse
Same issues, run adb reboot bootloader and reboots but in funky fastboot. When sending fastboot commands such as fastboot devices nothing happens its not responding. Also if you get into fastboot via power and volume up, and connect to pc and try to run any fastboot commands no response back.

jackmaddy said:
Same issues, run adb reboot bootloader and reboots but in funky fastboot. When sending fastboot commands such as fastboot devices nothing happens its not responding. Also if you get into fastboot via power and volume up, and connect to pc and try to run any fastboot commands no response back.
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Click to collapse
Turn on your phone, and do not connect to pc. Revoke USB debugging authorisation. Disable USB debugging. Enable USB debugging. Now connect your phone to pc. You should get a message on your phone about allowing USB debugging from that pc. Click don't ask again and then yes.
If you don't get that message try accessing phones storage through pc , that should prompt the phone to ask you about allowing USB debugging from that pc.
So click yes.
Now you should be able to run fastboot commands without problems.

brunkonjaa said:
Turn on your phone, and do not connect to pc. Revoke USB debugging authorisation. Disable USB debugging. Enable USB debugging. Now connect your phone to pc. You should get a message on your phone about allowing USB debugging from that pc. Click don't ask again and then yes.
If you don't get that message try accessing phones storage through pc , that should prompt the phone to ask you about allowing USB debugging from that pc.
So click yes.
Now you should be able to run fastboot commands without problems.
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Click to collapse
No, sorry that is wrong.
ADB permission is not needed for fastboot. These are 2 different programs, with different protocals .
The fact there is no response from phone when in fastboot is a sign that pc drivers are not correctly installed, or the fastboot program needs to be updated.

mrmazak said:
No, sorry that is wrong.
ADB permission is not needed for fastboot. These are 2 different programs, with different protocals .
The fact there is no response from phone when in fastboot is a sign that pc drivers are not correctly installed, or the fastboot program needs to be updated.
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You are absolutely right. Thanks for clarifying the issue. Spot on !!

Fastboot error Android Q

Hi guyz i wanted to root my phone for enabling camera2api. İ did it on Android 9 and worked perfectly. But i disabled it for updating to Android 10. Now im trying to boot patched boot for installing magisk. Everything is okay untill i type adb reboot bootloader for entering fastboot mode and boot img file. When it enters to fastboot mode i type fastboot devices for checking phone but nothing happening and when i type fastboot boot patched_boot.img it says waiting for device and nothing happening. Also when it restarts, usb debugging automatically turning off. İm turning it on checking phone with abd everything is okay but when it restarts from fastboot usb debugging turns off. Any help? İdk if its bug or im doing something wrong

Maharram said:
Hi guyz i wanted to root my phone for enabling camera2api. İ did it on Android 9 and worked perfectly. But i disabled it for updating to Android 10. Now im trying to boot patched boot for installing magisk. Everything is okay untill i type adb reboot bootloader for entering fastboot mode and boot img file. When it enters to fastboot mode i type fastboot devices for checking phone but nothing happening and when i type fastboot boot patched_boot.img it says waiting for device and nothing happening. Also when it restarts, usb debugging automatically turning off. İm turning it on checking phone with abd everything is okay but when it restarts from fastboot usb debugging turns off. Any help? İdk if its bug or im doing something wrong
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Click to collapse
AFAIK, your first point of reference is the fastboot issue. As long as device isn't recognized in fastboot mode, you won't be able to proceed. Drivers ? USB debugging on and authorized with the PC ? Command prompt being used with elevated rights ?
Regarding Cam2Api, I used a Magisk Module since I use Magisk.

Tianhe said:
AFAIK, your first point of reference is the fastboot issue. As long as device isn't recognized in fastboot mode, you won't be able to proceed. Drivers ? USB debugging on and authorized with the PC ? Command prompt being used with elevated rights ?
Regarding Cam2Api, I used a Magisk Module since I use Magisk.
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Yep i used magisk module too. Yeah usb debugging on and authorized with pc but not recognized on fastboot mode ( adb mode works )

Maharram said:
Yep i used magisk module too. Yeah usb debugging on and authorized with pc but not recognized on fastboot mode ( adb mode works )
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I know this might sound silly but are you using the latest platform tools version ?

Tianhe said:
I know this might sound silly but are you using the latest platform tools version ?
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Click to collapse
Yeah. Everytime i used 1.4.3 but this time specially downloaded latest version of adb and platform tools (from What is Adb post on xda)

Maharram said:
Yeah. Everytime i used 1.4.3 but this time specially downloaded latest version of adb and platform tools (from What is Adb post on xda)
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The only thing I can think of right now is Windows version. I have faced issues on Windows 10 but not in Windows 7. Also try downloading the Platform Tools from developer.android.com (adb is already available in the folder)

Tianhe said:
The only thing I can think of right now is Windows version. I have faced issues on Windows 10 but not in Windows 7
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Yeah im using win 10 redstone (latest version)
But also i did it on win 10 with Android 9

Tianhe said:
The only thing I can think of right now is Windows version. I have faced issues on Windows 10 but not in Windows 7. Also try downloading the Platform Tools from developer.android.com (adb is already available in the folder)
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Going to try this. Thanks a lot <3

Maharram said:
Going to try this. Thanks a lot <3
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Click to collapse
Hope you get the desired result. I am also on Win 10 latest update and I had faced issues initially. I have also added a registry hack so that everytime I open CMD with shift+right click it opens with administrator privileges.

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
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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.
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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.
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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
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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.
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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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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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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.
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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.
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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