Database Develop

LG G4 T-Mobile version 20x kdz

https://www.androidfilehost.com/?fid=818222786056028333
To regain root, simply use
Code:
fastboot boot
and drag and drop the TWRP file and press enter, and install root of your choice.

Boot loader won't unlock LG G4 H811
Boot loader won't unlock LG G4 H811
I have a LG G4 H811 (firmware version H81120o)
I want to unblock the bootloader but all attempts did not help
when you try to unlock through the ADB, after the second command line
the following text appears on the phone:
--------------------------------------------------------------
* Welcome to Fastboot Mob for bootloader unlock:
* Quik Guidance
1) How to ulock: fastboot oem unlock
2) Check bootloader is unlocked: fastboot getvar unlocked
* HOW TO exitfastboot mode
1) Press the Power button for 10 secs to turn off the device
2) Use "fastboot reboot" command if the fastboot is available
----------------------------------------------------------------
After the appearance of such text, the phone freezes and does not respond to any commands
I've tried all the ways that you can find on "YouTube" but they do not help
help me please
sorry for the incorrect text, I use Google translator
thanks to everyone

Can this just be flashed in twrp along with the gapps zip?

Guess not

vov4ik59 said:
Boot loader won't unlock LG G4 H811
I have a LG G4 H811 (firmware version H81120o)
I want to unblock the bootloader but all attempts did not help
when you try to unlock through the ADB, after the second command line
the following text appears on the phone:
--------------------------------------------------------------
* Welcome to Fastboot Mob for bootloader unlock:
* Quik Guidance
1) How to ulock: fastboot oem unlock
2) Check bootloader is unlocked: fastboot getvar unlocked
* HOW TO exitfastboot mode
1) Press the Power button for 10 secs to turn off the device
2) Use "fastboot reboot" command if the fastboot is available
----------------------------------------------------------------
After the appearance of such text, the phone freezes and does not respond to any commands
I've tried all the ways that you can find on "YouTube" but they do not help
help me please
sorry for the incorrect text, I use Google translator
thanks to everyone
Click to expand...
Click to collapse
This is 2 months late, but if you're still looking for a possible solution, this is what I did:
1.) Download the tools you need here: https://developer.android.com/studio/releases/platform-tools/ and extract
2.) Install LG United Mobile Drivers from here: https://lg-united-mobile-driver.en.lo4d.com/. I recommend uninstalling previously installed LG G4 drivers from Device Manager and then reinstall from that page. You may need to install additional drivers once you connect your G4 to your computer.
3.) In Developer Options, make sure you have "Enable OEM unlock" checked and "USB Debugging"
4.) Open a command prompt in the tools directory (hold shift, right-click inside the folder, and click "open command prompt here." If you've authorized your device to be recognized by your computer (two prompts should popup: one to allow USB connection and another to allow USB debugging), your device should be listed if you enter the command "adb devices"
5. Enter "adb reboot bootloader"
6. Once the phone has rebooted into the bootloader, you should be at the stage where you get the text on your phone, as you described. Enter "fastboot oem unlock"
7. Check if you've unlocked the bootloader: "fastboot getvar unlocked"
8. If successful, you can then go on to flash TWRP onto the recovery partition and root your phone by flashing Magisk from there.

Hello .. I have a LG G4 811 t mobile32GB phone, what is the appropriate flash?

Mi A2 BOOTLOOP can't get into Fastboot or Recovery

So i followed this guide to root my Mi A2 "theandroidsoul (insert dot here) com/xiaomi-mi-a2-root/"
It went all fine but the phone was still not rooted. So i thought maybe get the newest Magisk.zip wich i put on the phone.
So I went back to step 11. to install the new version with TWRP but it didnt go to TWRP although i held the volume up butten and then used the command "fastboot reboot" and then it weent into bootloop
so i Guess i am stuck on my Partition A (in my case) where i installed TWRP but i cant shut the phone dont to get into fastboot and ADB says Error: no device Found".
I Need Help plssss :crying:

If you cant go to fastboot then you need open up phone and use testpoint to force edl mode
But before that hold volume down and power for 10-15 sec to force fastboot

The battery is drained now, i tried to plug it in to the wall and boot into fastboot right away, i saw the fastboot screen for a splitsec but it cut off because it had not enough charge, so i left it plugged in and tried to go to fastboot constantly till the phone had enough charge to hold the boot, i was in fastboot for about 1 minute or so (my plan was to charge it in fastboot mode, leave it like that and then go to the pc to change the active partition back, but the pc didnt recognise the phone) but after that it startet bootlooping again while it was in fastboot.
Could i try to got to TWRP with "volume up + power button" ? and change the active partition in there?

Facing almost similar problem like you yesterday.
Try method I post here
https://forum.xda-developers.com/mi-a2/how-to/ota-v9-6-5-0-odimife-t3823445/page24
1. Have phone in fastboot mode
2. Launch adb cmd (NOT your pc usual cmd)
3. Connect to pc, type 'fastboot devices'

Need help to relock the Razer Phone 2 bootloader.

Hi, Im kinda new to this bootloader thingy. What happen is, i updated the razer phone 2 to Pie, but notice wifi and sim card cant be detect. Even factory reset fails. So i thought of flashing new image on it. KINDA easy on my oneplus, but im not sure where I gone wrong on this razer phone 2, i accidentally unlock the bootloader. NOW the problem is HOW to relock it back? i been follow all youtube and guides all over the place but still fails.
The state of device atm, cannot be boot into Download Mode. Everytime I plug in usb c from Windows, it will boot into unlock bootloader warning page, and continue boot into the homescreen. testing the adbtools, fastboot also to no avail. Can anyone help and guide me how to relocking it back? Maybe i type wrongly on cmd or maybe other android steps not similar to razer one etc....:crying:help much appreciated.

Hold volume down while turning on. Then fastboot flashing lock.

the stock usb doesnt send things correctly in BL mode, https://www.amazon.com/Blackweb-3-Foot-Charge-Cable-Connector/dp/B07SG7P3KZ/ worked for me. with the correct usb cable you should be able to perform the lock commands correctly. can you give us more detail of what you tried on this phone so we know if we need to provide you additional information?

https://developer.razer.com/razer-phone-dev-tools/general-instructions/
"Locking the Bootloader
Locking the bootloader is recommended for security reasons. Some applications will not work with an unlocked bootloader.
Start the Phone in Download Mode with one of the following methods:
Using the adb tool: With the Phone powered on, execute: adb reboot bootloader Enter Download Mode:
Plug in a USB cable to connect your Razer Phone to your computer, Power Off the Phone, then turn it on and immediately press and hold the Volume Down button until “Download Mode” appears on screen.
Lock the critical partitions of the Bootloader first by running this command: fastboot flashing lock_critical
Your Razer Phone will show you a confirmation screen. Use the Volume Up/Volume Down buttons for navigation, and press the Power button to select. Your Phone will reboot."

I can't seem to enter download mode. All I have is fastboot mode and the option to either reboot, close the phone or enter recovery mode. I would really like to lock the bootloader, but I can't seem to be able to detect my phone on my PC even though I installed the fastboot driver.

The_Vinlander said:
I can't seem to enter download mode. All I have is fastboot mode and the option to either reboot, close the phone or enter recovery mode. I would really like to lock the bootloader, but I can't seem to be able to detect my phone on my PC even though I installed the fastboot driver.
Click to expand...
Click to collapse
You must use a USB 2.0 port. The RP2 isn't detected by fastboot when connected to a 3/3.1 port.

Reznor7 said:
You must use a USB 2.0 port. The RP2 isn't detected by fastboot when connected to a 3/3.1 port.
Click to expand...
Click to collapse
I tried this, but to no avail. I tried with 2 cables I had and it keeps telling me < waiting for device > when I enter this command; fastboot flashing lock_critical

The_Vinlander said:
I tried this, but to no avail. I tried with 2 cables I had and it keeps telling me < waiting for device > when I enter this command; fastboot flashing lock_critical
Click to expand...
Click to collapse
You need to go into your device manager and select [ android bootloader interface ] while in fastboot

Rog Phone 3 in fastboot will not accept: fastboot oem asus-lock command for locking bootloader- <waiting for device>error

If my android 10 phone is encrypted in security settings, does this mean that I will not be able to use fastboot command or adb when I hold power button and vol up to get into fastboot mode? I have rog phone 3 and am lost am trying to relock the bootloader using command fastboot oem asus-lock but I keep getting <waiting for device> this must be due to the fact my device is encrypted right?
If it is does anyone know of a way of decrypting the rog phone 3 without doing a complete factory reset because its so time consuming and android backups suck

KashDaMan007 said:
If my android 10 phone is encrypted in security settings, does this mean that I will not be able to use fastboot command or adb when I hold power button and vol up to get into fastboot mode? I have rog phone 3 and am lost am trying to relock the bootloader using command fastboot oem asus-lock but I keep getting <waiting for device> this must be due to the fact my device is encrypted right?
If it is does anyone know of a way of decrypting the rog phone 3 without doing a complete factory reset because its so time consuming and android backups suck
Click to expand...
Click to collapse
also is the error due to my device being encrypted in the first place?

The encryption relates to files etc stored on device and should not effect settings and system commands .. only way to decrypt keeping files intact is booting the device and disabling security on device .. or finger print face pin etc

I finally found a fix for: <waiting for device> error when trying to use minimal ADB and fastboot in the bootloader.
this video explains why and I was after installing the fastboot drivers correctly able to use command: fastboot oem asus-lock to relock my rog phone 3 bootloader. IMPORTIANT: WHEN INSTALLING FASTBOOT DRIVERS YOU MUST HAVE YOUR PHONE IN THE BOOTLOADER!

Question Can't get into fastboot to unlock bootloader

Phone info
OPPO A74 5G
Model number - CPH2197
Build number - CPH2197_11_A.12
Android 11
Developer Mode enabled
OEM Unlock enabled
USB Debugging enabled
Below are screenshots of all of the above
[Screenshots](https://imgur.com/a/qw0fUAw)
Phone is recognised by ADB but not Fastboot and as such I cannot unlock the Bootloader. Is there something I've done wrong or something else I can try?
When entering "Fastboot devices" in CMD nothing comes up.
When entering command "ADB reboot Bootloader" in CMD the phone restarts instead of loading into Bootloader.
I have tried turning phone off and the pushing power button + vol up - this just keeps restarting phone.
Any help would be much appreciated as I'd really like to root this phone all extra info in images on Imgur. Link above.

DeeSkye said:
Phone info
OPPO A74 5G
Model number - CPH2197
Build number - CPH2197_11_A.12
Android 11
Developer Mode enabled
OEM Unlock enabled
USB Debugging enabled
Below are screenshots of all of the above
[Screenshots](https://imgur.com/a/qw0fUAw)
Phone is recognised by ADB but not Fastboot and as such I cannot unlock the Bootloader. Is there something I've done wrong or something else I can try?
When entering "Fastboot devices" in CMD nothing comes up.
When entering command "ADB reboot Bootloader" in CMD the phone restarts instead of loading into Bootloader.
I have tried turning phone off and the pushing power button + vol up - this just keeps restarting phone.
Any help would be much appreciated as I'd really like to root this phone all extra info in images on Imgur. Link above.
Click to expand...
Click to collapse
Did you find a way? I tried everything but I couldn't get into fastboot

No way to enter fastboot mode for oppo phones. Now I use Oppo A74 4G version. Cannot enter fastboot mode. It's locked by Oppo. And they don't give bootloader code for unlock BL. Only way is to change phone

I've been trying run fastboot too. 4 hours later I find this thread. That explains it
Last Oppo phone I buy I guess.
Did you manage to find a workaround for this by chance?

Has anyone tried rebooting from recovery to then enter fastboor or?
Im gonna look into myself soon...
Ive seen this issue before on a different phone but cant remember how they bypassed it
Perhaps yall can try to find a post where they did so.. maybe it'll work on this phone too.

I was able too get to fastboot mode. The phone labels it "recoveryd mode", however, fastboot commands work.
1st. Connect phone and confirm ADB is connected by using "ADB devices" command.
2nd. Enter "adb reboot fastboot bootloader"
Phone will reboot into "recoveryd mode". It looks exactly like the normal recovery mode except the title displayed after you select the language and fastboot commands will work.
However, I still have not found out how to unlock the bootloader, so it does me no good.

try doing adb reboot fastboot or adb reboot bootloader

fastboot oem unlock
FAILED (remote: 'Unable to open fastboot HAL')
fastboot: error: Command failed
guys ,, fails
when trying to boot to fastboot and not fastbootd