I'm on Linux Mint 18.3 and my G620S-L01 phone is on Android 4.4.4
I have downloaded minimal adb and fastboot tool.
First question, when issueing "adb devices" and "fastboot devices" command, shouldn't I get the same output? ( which is from what I understand the device serial number ). This is what I get:
Code:
./adb devices
List of devices attached
84dbac441b79 device
./adb reboot-bootloader
./fastboot devices
no permissions (user in plugdev group; are your udev rules wrong?); see [developer.android.com/tools/device.html] fastboot
sudo ./fastboot devices
3a226eb fastboot
Then when I issue any oem commands I tried, I always get "FAILED (remote: 'unknown command')" like for example:
Code:
sudo ./fastboot oem device-info
FAILED (remote: 'Invalid command')
fastboot: error: Command failed
I have read in some other thread, that to make oem commands working "OEM unlock" needs to be set up in Developer options. But from what I understand, this option is for >= Android 5.something. How to make those commands working on 4.4.4 version?
Edit:
I have then downloaded and installed full-blown Android studio. But the result is the same.
Hello all,
I currently have a Blu Studio Mega 2019 android device with me. It is running android 9. I have spent the last 3 days trying my hardest and expending all resources to root the device. I have been unsuccessful every time and the main reason is that When I run the below command it always fails. I have tried "fastboot oem unlock" or "fastboot oem device-info" and it always returns command not valid.
fastboot flash recovery twrp.img
Sending 'recovery' (16356 KB) OKAY [ 0.527s]
Writing 'recovery' FAILED (remote: 'Flashing Lock Flag is locked. Please unlock it first!')
fastboot: error: Command failed
Yes I do have usb debugging on, OEM unlock on, I have the android drivers for the "fastboot gadget installed". My device shows up when I type "fastboot devices" and will reboot with "fastboot reboot". I have not been able to find a solution to my 'Flashing Lock Flag is locked. Please unlock it first!' problem. I hope someone else has found the solution.
Hey, I have an alcatel 3 and I wanna see how I can root it. I'm trying to root it using magisk but fastboot keeps returning the error unknown command all the time.
when I do
fastboot flash ...
it sends the file but then writing produces an error.
I know that I can root it and that I've done it before using magisk. but now it doesn't work. btw i don't think i fully unrooted my device so that may be the issue.
Fastboot deals with phone's bootloader where it doesn't matter whether phone's Android got rooted or not.
If you get shown
FAILED (remote: 'unknown cmd.')
fastboot: error: Command failed
or
FAILED (remote: 'Not implemet.')
fastboot: error: Command failed
means the bootloader wasn't unlocked properly.
Try this command sequence
Code:
fastboot devices
fastboot flashing unlock
fastboot flashing unlock_critical
What if
fastboot flashing unlock.
Returns command not found
If "command not found" is returned by Fastboot when trying to unlock bootloader then unlocking phone's bootloader is denied.
what if i have to run sudo to use fastboot could that be the problem
Fastboot deals with Android device's bootloader: So it's irrelevant whether Android is rooted or not.
Take note that Fastboot isn't Fastboot hence not all Fastboot commands do necessarily work as expected: it depends on how OEM implements Fastboot.
having the same problem with my qlink tablet but when using command fastboot flashing unlock
it returned fastboot oem operation fail: unknown cmd' : error: command failed This is my first time rooting anything help please?
hellp me ty pls!
Have you turned on "allow OEM to be unlocked" in developers option
I need the boot.img for the EU-Version. Can someone please help me? Thx in forward.
Here are both magisk patched and stock boot.img files
Using latest magisk 25.1 stable
Stock
Magisk Patched
Thank you. I've now read rooting is not possible because Mediatek. Is it true please? Will not break it.
I'm rooted on my Nord2T. Whoever said that does not know what they are talking about.
The original Nord 2 was also mediatek and has a few custom ROMs and everything
I'm not able to boot correct in bootloader. There is written at the display extreme small "Fastboot Mode". If I set command "fastboot oem unlock" there is no reaction and nothing written. Changing with up/down is nothing doing.
Pushing Vol- and Powerbutton ends in recovery. There it is only possible to choose language and then wipe, reboot and power off.
My firmware is: CPH2399_11_A.09
Wrong code not
Code:
fastboot oem unlock
The correct command is
Code:
fastboot flashing unlock
Sorry, can not unlock the bootloader
Both commands failed
PS C:\adb2> fastboot flashing unlock
FAILED (remote: 'Unrecognized command flashing unlock')
fastboot: error: Command failed
PS C:\adb2> fastboot oem unlock
FAILED (remote: 'Unable to open fastboot HAL')
fastboot: error: Command failed
PS C:\adb2>
Try using a different ADB and fastboot. I use official platform tools from here
Also what comes up when you type
Code:
fastboot devices
Have downloaded and used the tools from official platform (your link)
PS C:\adb3> fastboot devices
UKGYBYZTL7699T8T fastboot
PS C:\adb3> fastboot flashing unlock
FAILED (remote: 'Unrecognized command flashing unlock')
fastboot: error: Command failed
PS C:\adb3> fastboot oem unlock
FAILED (remote: 'Unable to open fastboot HAL')
fastboot: error: Command failed
I'm in "Fastbootd Mode".
The command was "adb reboot fastboot". The command "adb reboot bootloader" does not work at mine N2t
mystery007 said:
Have downloaded and used the tools from official platform (your link)
PS C:\adb3> fastboot devices
UKGYBYZTL7699T8T fastboot
PS C:\adb3> fastboot flashing unlock
FAILED (remote: 'Unrecognized command flashing unlock')
fastboot: error: Command failed
PS C:\adb3> fastboot oem unlock
FAILED (remote: 'Unable to open fastboot HAL')
fastboot: error: Command failed
I'm in "Fastbootd Mode".
The command was "adb reboot fastboot". The command "adb reboot bootloader" does not work at mine N2t
Click to expand...
Click to collapse
I had the same problem while opening Bootloader...Tried everything - Windows 10
I did the same on Windows 7 and immidiately bootloader open.
mystery007 said:
Have downloaded and used the tools from official platform (your link)
PS C:\adb3> fastboot devices
UKGYBYZTL7699T8T fastboot
PS C:\adb3> fastboot flashing unlock
FAILED (remote: 'Unrecognized command flashing unlock')
fastboot: error: Command failed
PS C:\adb3> fastboot oem unlock
FAILED (remote: 'Unable to open fastboot HAL')
fastboot: error: Command failed
I'm in "Fastbootd Mode".
The command was "adb reboot fastboot". The command "adb reboot bootloader" does not work at mine N2t
Click to expand...
Click to collapse
Did you enable developer options and select Enable OEM unlock first?
garylawwd said:
I'm rooted on my Nord2T. Whoever said that does not know what they are talking about.
The original Nord 2 was also mediatek and has a few custom ROMs and everything
Click to expand...
Click to collapse
Did you pass the safetynet check?
My new Nord 2T is arrived today, I will see how many days it will resist unrooted
cioce said:
Did you pass the safetynet check?
My new Nord 2T is arrived today, I will see how many days it will resist unrooted
Click to expand...
Click to collapse
It will if you flash kdragon safetynet fix in magisk
cioce said:
Did you pass the safetynet check?
My new Nord 2T is arrived today, I will see how many days it will resist unrooted
Click to expand...
Click to collapse
Don't rush and don't do it like me. Here boot images are for 09. So upgrade first.
Safety net passes with magisk module
Root easily hidden with lsposed and shamiko module.
Riski3Run said:
Did you enable developer options and select Enable OEM unlock first?
Click to expand...
Click to collapse
Yes
mystery007 said:
Have downloaded and used the tools from official platform (your link)
PS C:\adb3> fastboot devices
UKGYBYZTL7699T8T fastboot
PS C:\adb3> fastboot flashing unlock
FAILED (remote: 'Unrecognized command flashing unlock')
fastboot: error: Command failed
PS C:\adb3> fastboot oem unlock
FAILED (remote: 'Unable to open fastboot HAL')
fastboot: error: Command failed
I'm in "Fastbootd Mode".
The command was "adb reboot fastboot". The command "adb reboot bootloader" does not work at mine N2t
Click to expand...
Click to collapse
u should not be in fastbootd mode in adb type adb reboot bootloader
then type
fastboot flashing unlock
this should unlock your bootloader
I try to root the OPPO A54 5G. I got into the fastbootd mode and i want to unlock the bootloader.
I have no PIN or something, OEM Unlocking is activated and Developer Options are activated too.
If i execute the command fastboot devices
it shows my device.
If i execute the command fastboot flashing unlock
it says: FAILED (remote: 'Unrecognized command flashing unlock')
but if i execute the command fastboot oem unlock
it says: FAILED (remote: 'Command not supported in default implementation')
Can anyone help me?