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
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.

Fastboot not working

Hey guys,
I have a problem while trying to flash TWRP on my Xiaomi Mi5. TWRP was installed earlier and worked completly fine with flashing custom ROMs, flashing OpenGAPs or rooting the device but now for some reason TWRP got lost and the standard Xiaomi recovery is on the device again. Installed was MIUI 8 in the Dev-Version (weekly patches) for the last half year and was the last ROM flashed with TWRP.
And now comes the problem when i try to install/flash the twrp image via fastboot: If i reboot the device in fastboot mode it shows the following behaviour:
1. It show the fastboot logo on the screen for about 10-30 seconds before it reboots automaticly (doesn't matter if i connect it via USB before or while it shows the fastboot logo)
2. While it shows the logo on the screen and it is connected via USB it's not showing up in the console when i list the all connected fastboot devices
I can still use the devices standard recovery and the installed OS, just the fastboot part seems to be brocken. Am i missing a driver on my computer or something?
Has somebody else an idea how i can solve this automatic reboot in fastboot mode?
Edit: If this Thread belongs into another catagory, i apologize

Make sure minimal adb and fastboot are installed in your pc. After that, enable usb debugging from developer options and connect with your pc and let it there for a while to install drivers on your pc. Then go to twrp and your phone should no longer reboot after your connect usb. Flash twrp here.
Sent from my Xiaomi Mi5 using Tapatalk

SilverMarcs said:
Make sure minimal adb and fastboot are installed in your pc. After that, enable usb debugging from developer options and connect with your pc and let it there for a while to install drivers on your pc.
Click to expand...
Click to collapse
ADB and FASTBOOT installed -> checked!
USB-Debugging enabled -> checked!
Windows installing drivers automaticly -> unsure. Windows didn't installed anything it just notified me that there is a new USB-Device (Device is also showen as ADB-Device and appears in the list of connected adb devices)
SilverMarcs said:
Then go to twrp and your phone should no longer reboot after your connect usb. Flash twrp here.
Click to expand...
Click to collapse
To that: TWRP is not installed on the phone anymore. I just have the standard xiaomi recovery where i'm not able to flash a .zip or something. I can just wipe all my data there
The reboot behaviour also appears if i switch to fastboot via "adb reboot bootloader" command while spamming "fastboot devices" to check if it appears before it reboots.
The standard recovery is usable as it should be without any reboots only the fastboot mode seems brocken.

FrozenPie1 said:
ADB and FASTBOOT installed -> checked!
USB-Debugging enabled -> checked!
Windows installing drivers automaticly -> unsure. Windows didn't installed anything it just notified me that there is a new USB-Device (Device is also showen as ADB-Device and appears in the list of connected adb devices)
To that: TWRP is not installed on the phone anymore. I just have the standard xiaomi recovery where i'm not able to flash a .zip or something. I can just wipe all my data there
The reboot behaviour also appears if i switch to fastboot via "adb reboot bootloader" command while spamming "fastboot devices" to check if it appears before it reboots.
The standard recovery is usable as it should be without any reboots only the fastboot mode seems brocken.
Click to expand...
Click to collapse
Weird. Everytime this sorta problem happens to me, its because windows didnt have the drivers installed after you connect your pc with debugging enabled. So thats the only troubleshooting i did to fix things. And yeah it did show me drivers installed correctly after i connected phone with debugging enabled. Maybe for some reasonn those drivers arent being installed to windows. Give it more time maybe? [emoji23]
Sent from my Xiaomi Mi5 using Tapatalk

SilverMarcs said:
Weird. Everytime this sorta problem happens to me, its because windows didnt have the drivers installed after you connect your pc with debugging enabled. So thats the only troubleshooting i did to fix things. And yeah it did show me drivers installed correctly after i connected phone with debugging enabled. Maybe for some reasonn those drivers arent being installed to windows. Give it more time maybe? [emoji23]
Click to expand...
Click to collapse
It's not working on both Windows 10 Machines i have. I'll try to install Windows 7 on my Laptop (or in a VM) and look if that works when i'm home again
Edit: Well, now i'm totally confused... For some reason fastboot started working again this morning so i was able to flash TWRP again. Anyway thanks for the help

FrozenPie1 said:
Hey guys,
I have a problem while trying to flash TWRP on my Xiaomi Mi5. TWRP was installed earlier and worked completly fine with flashing custom ROMs, flashing OpenGAPs or rooting the device but now for some reason TWRP got lost and the standard Xiaomi recovery is on the device again. Installed was MIUI 8 in the Dev-Version (weekly patches) for the last half year and was the last ROM flashed with TWRP.
And now comes the problem when i try to install/flash the twrp image via fastboot: If i reboot the device in fastboot mode it shows the following behaviour:
1. It show the fastboot logo on the screen for about 10-30 seconds before it reboots automaticly (doesn't matter if i connect it via USB before or while it shows the fastboot logo)
2. While it shows the logo on the screen and it is connected via USB it's not showing up in the console when i list the all connected fastboot devices
I can still use the devices standard recovery and the installed OS, just the fastboot part seems to be brocken. Am i missing a driver on my computer or something?
Has somebody else an idea how i can solve this automatic reboot in fastboot mode?
Edit: If this Thread belongs into another catagory, i apologize
Click to expand...
Click to collapse
I too have the same problem..****

Install MiFlash on your PC and try again, the device will show up correctly on fastbook devices command. It was a USB drivers issue in my case.

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
Click to expand...
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.
Click to expand...
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

Question Stuck on the fastboot screen

Hey,
So, basically, I'm having this issue where my phone fails to enter fastboot mode. It just gets stuck on the screen. I can restart normally if that happens by just holding down the power and volume down button, but I really don't get why it isn't booting into fastboot properly. Anything I can do to fix it? I'm on 12.5.9, Redmi 9T Global version. I need to boot into fastboot in order to install TWRP, and I can't do that due to this issue. Also, as a side question, how can I downgrade MIUI?
Thanks in advance.

Bump.

Bump.

Bump.

Xenomorphs said:
Hey,
So, basically, I'm having this issue where my phone fails to enter fastboot mode. It just gets stuck on the screen. I can restart normally if that happens by just holding down the power and volume down button, but I really don't get why it isn't booting into fastboot properly. Anything I can do to fix it? I'm on 12.5.9, Redmi 9T Global version. I need to boot into fastboot in order to install TWRP, and I can't do that due to this issue. Also, as a side question, how can I downgrade MIUI?
Thanks in advance.
Click to expand...
Click to collapse
Have you tried using adb and fastboot method. Try using adb to force boot it into fastboot

qwertz512 said:
Have you tried using adb and fastboot method. Try using adb to force boot it into fastboot
Click to expand...
Click to collapse
Any detailed steps for that? Right now, I'm facing another issue, too, where I apparently have an update (MIUI 13), but it can't verify it, hence, not installing it.

Xenomorphs said:
Any detailed steps for that? Right now, I'm facing another issue, too, where I apparently have an update (MIUI 13), but it can't verify it, hence, not installing it.
Click to expand...
Click to collapse
Enable developer options and enable usb debugging after that download android adb tools and adb drivers for your phone. After that you have installed everything go to the directory where you have adb installed and from that open a elevated command prompt and type in "adb devices". It should say a random string followed by device (if your device is plugged in) After that type adb reboot bootloader and it should reboot into fastboot. For the update issue I've had that too its when the download was interrupted mid-way and it got corrupted somehow and the md5 doesn't match. Make sure to download it on the screen without turning off the screen or switching off to others apps.

hakudayo said:
Enable developer options and enable usb debugging after that download android adb tools and adb drivers for your phone. After that you have installed everything go to the directory where you have adb installed and from that open a elevated command prompt and type in "adb devices". It should say a random string followed by device (if your device is plugged in) After that type adb reboot bootloader and it should reboot into fastboot. For the update issue I've had that too its when the download was interrupted mid-way and it got corrupted somehow and the md5 doesn't match. Make sure to download it on the screen without turning off the screen or switching off to others apps.
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Click to collapse
Thank you so much. I'm going to try.

Xenomorphs said:
Thank you so much. I'm going to try.
Click to expand...
Click to collapse
No problem if you have any questions just ask me

Now I'm stuck with this same issue.,
Got into this while trying to boot TWRP OrangeFox-R12.1_3_A12_FBEv2-Unofficial-lime.zip on xiaomi A12 ROM

Question [Resolved] No connection with pc in fastboot mode.

Hello all, I'm trying to install a new ROM but one of the first steps consists in getting access to adb and fastboot mode.
Unfortunately, I can easily access to adb mode, and adb commands respond well, but when I then go in fastbood mode 'adb reboot fastboot", My phone goes to fastboot with the icon on the screen, but won't answer to any fastboot commands.
I've tried to install adb drivers, uninstall/reinstall the drivers (but it's always the windows drivers that installs first). I even tried to install google usb drivers using SDK manager, but didn't succeed this step.
I've tried to change the usb cable, but with another one, it was worse: even the adb commands would not work. So I guess the one I'm using is ok.
I'd be very happy if someone could help me fixing this frustrating bug!
Model:M1903F11A
kernel:4.14.117-perf-g0f2347b
MIUI Global 12.0.6
Android version : 10 QKQ1.190825.002

Cyjam said:
.. new ROM but one of the first steps consists in getting access to adb and fastboot mode.
...
Click to expand...
Click to collapse
The first step is to unlock the bootloader.
Cyjam said:
... when I then go in fastbood mode 'adb reboot fastboot", My phone goes to fastboot with the icon on the screen, but won't answer to any fastboot commands.
....
Click to expand...
Click to collapse
For fastboot try:
adb devices
........... (here you must see a number)
adb reboot bootloader
fastboot devices
........... (here you must see that number again)

Hi, thanks for trying to help me:
you're right , first is the unlock, but it's done. it's even in "grey" on the screen and written: bootloader is already unlocked. I've tested my phone with "root checker" and test is ok.
you're right about the command, this is the one I've used to go to fastmode and actually this command works: as I said, when in adb mode, it's all good: my phone is connected to pc and accepts the adb commands. But once I switch to fastboot, this is when it's going wrong: my phone's not answering to any commands.
To be more precise: when prompting: adb devices: i get a number. When prompting, in fastbood mode, fastboot devices: i get nothing.

Alleluia!!
Finally found out how to fix it!
After going in fasboot mode with the command: adb reboot bootloader, i opened the windows device manager: There I found a android XXx interface, or something like this: anyway, something barely identified by windows. Right clik, update drivers, manually update, pointing to the folder I store the google usb drivers and : Bingo! It works like a treat.
I now can step further in the process... Hope I won't need to come back with another question in the next minutes!