[Q] Unable to access bootloader - G4 Q&A, Help & Troubleshooting

I am unable to access the bootloader via "adb reboot bootloader". Basically the phone will restart without entering the bootloader. As far as I know you aren't able to manually access the bootloader without a custom recovery. Is there anything I can do to resolve this issue?

Related

problem TWRP recovery

Hello everyone, I followed the guide to have TWRP recovery for my Huawei g8, but now that I'm in recovery and I press the button restarts the system, it always appears recover, I tried a reset ard eliminating the operating system, and installing again with TWRP recovery but I have always the same problem. what can I do??
Same problem here. Bootloader unlock, but FRP locked. Not enable to use HiSuite because Fastboot dont' flash due FRP lock. Only I can use shell (Commands from terminal in TWRP). Unable to relock bootloader due TWRP is not stock

Zenfone2 stuck at bootloader!

Hello all,
I have Zenfone 2 on which I intended to use a custom ROM.
So the first thing was to unlock the bootloader.
On previous occasion, on my Nexus, I had used the - fastboot oem unlock - command and it had worked. So with that in mind, I booted into the bootloader and tried the command, but it failed - saying oem command unrecognized.
Then I searched online and apparently, to unlock the bootloader, Asus has launched an app! But to be able to install the app, I need to get a normal boot happening, which is not happening now.
In between all this, I tried the commands - fastboot flash recovery <recovery.img>, fastboot flash boot <boot.img> too. But none of these were successful, and each of them returned a 'Permission denied' message, probably coz the bootloader was locked.
Now the situation is that -
- Bootloader is locked.
- Phone is stuck in bootloader
- There is no recovery installed. In fact, from the bootloader, when I try to boot into 'Recovery Mode', it goes there for a second and returns back to the bootloader. Doesn't show the normal android image with a 'X' on top.
- There is no root access.
Now I think the first step is to get root access, and for this I want to try the method with installing CWM recovery and SuperSu.
But for this, I need to be able to push the SuperSu.zip to the phone, which I am not able to.
Can somebody please help!
r the drivers for fastboot & adb update to date?
Android version?
If the phone is stuck in bootloader, you can use Asus Flash Tool to flash .raw files and unbrick the phone.
Raw files: https://yadi.sk/d/FijRoAVJtvRiG
AFT: https://yadi.sk/d/NQCiY--IsQjBr (I use AsusFlashToolInstaller1.0.0.14.exe).
you can use Asus Flash Tool to flash .raw files and unbrick the phone.
Click to expand...
Click to collapse
Have to choose wipe the data or not?
hafiz019 said:
Have to choose wipe the data or not?
Click to expand...
Click to collapse
stay away from aft. if will f**k up yor device completely. AFT is too unstable. lot of times it bricks the device to unrecoverable state. tell me the bootloader version, ifwi version shown on screen while in bootloader mode.

Boot animation only, but can boot to bootloader and TWRP

Hate to start a new thread, but I don't see what I am running into .
My Nexus 5x is unable to boot past the animation (normally it would ask for my pattern, then boot into the system). I can access the bootloader and I can access TWRP.
But when I try adb commands like adb devices I get no response.
I just use this to sideload the new OTA from google which worked just fine so I know the sdk is setup correctly on this computer (rebooted etc).
With access to the bootloader and even TRWP (3.0.2-2) any clue as to where to go from here?
If I try to use adb sideload in advanced in TWRP, I can't talk to the phone (fastboot command fail)...
Phone Bootloader is: BHZ11g
The version of Nexus should be NRD91N 7.0
Seems I have some access on my phone, but cannot send commands to it via computer.
**Update** while at the bootloader (fastboot mode) I can see response when I use
fastboot devices
00b14a7d39589285 fastboot
Okay, I was able to recover from this by sideloading again the new OTA from google. The phone then rebooted but was wiped.
Will work from there

Trying to Root and Install Custom ROM

Edit: Issue resolved
Hello everyone,
Pardon my lack of knowledge on rooting devices and all the related things. This is my first time attempting to root a device and I am having a lot of trouble understanding how to go about things. Through my research, I'm finding a lot of different ways to do things and I want a direct opinion on my process so I don't mess up my phone. (Through as much research as I could) My end goal is to have TWRP flashed to my phone, root my device and install a custom ROM. My understanding is that I first need to unlock the bootloader, flash TWRP, install SuperSU, then flash the custom ROM. I won this phone from a raffle and I'm trying to root from a Windows 10 laptop.
I have the TWRP and SuperSU files at the ready and have also installed Kingo root. I enabled USB debugging and allowed the bootloader to be unlocked in developer settings. I tried to boot into download and bootloader and successfully recognized my device, but when trying to use "fastboot flash recovery twrp-3.2.3-0-hima.img" it gave me the error message "FAILED (remote: cannot flash this partition in s-on state)" and "FAILED (remote: 9 RU_SECURITY_FAIL recovery and bootloader isn't BL_UNLOCKE)"
I'd assumed my phone was already unlocked but that's obviously not the case. Doing some more research I found a lot of people needed to get a bootloader unlock from HTCdev.
Is this what I need to do now to continue?
What about this "s-on state" how can I turn it off?
Will unlocking the bootloader wipe my device?
Could I just use the "root" button in the Kingo root main app?
Can anyone verify my theoretical steps and give quick notes on how I should be doing them properly?
Any help is greatly appreciated
dont worry i will help you
Download all in one Android toolkit for your PC...
https://www.google.com/url?sa=t&sou...FjAAegQIBRAB&usg=AOvVaw0sohDTlAE3UaLSgUihYhS3
and connect your phone to PC and allow USB debugging after that
go to Android all in one toolkit and select unlock bootloader....on the screen of your phone it would ask you if you want to unlock bootloader press volume up for yes
volume down for no
Select yes...but
Note:It would reset everything on your phone so back up your necessary files
Make sure you download the right twrp image for your phone (Google search)
Move the Twrp.img to your PC local directory folder and rename it to TWRP.img ....next step is to:-
next step is to go to windows command prompt on your PC and type the following commands:-
Adb devices
Adb reboot bootloader
Fastboot devices
Fastboot flash recovery TWRP.img
Note:make sure you reboot your phone to recovery before normal reboot so that it would replace your previous stock rom
Go to twrp and install the latest version of super su
https://download.chainfire.eu/696/supersu/
This steps worked for me it can work for almost all types of phone
my name is Iduh Winner
I was a root struggler like you...all thanks to God ....I love you all for more info contact me on the following social media
facebook:Iduh Winner
YouTube:Iduh Winner

Can not access bootloader

Hello
Have flashed LOS and phone powering on and working, Can access download mode.
adb/fastboot reboot bootloader commands just reboots phone to android. Any guide about this? I want fastbook back... Stuck on android 9

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