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Question Bootloader Unlock Error (Unable to open fastboot HAL)

Hello,
I'm trying to bootloader unlock this phone and have encountered the above error. I am using the OEM cable, and basic ADB commands work (adb reboot ______, etc.) The command fastboot oem device-info yields the same error message. I'm thinking I don't have the right USB drivers but the phone is so new I can't find anything for it.
Do you guys have any ideas?

Boyo Synth II said:
Hello,
I'm trying to bootloader unlock this phone and have encountered the above error. I am using the OEM cable, and basic ADB commands work (adb reboot ______, etc.) The command fastboot oem device-info yields the same error message. I'm thinking I don't have the right USB drivers but the phone is so new I can't find anything for it.
Do you guys have any ideas?
Click to expand...
Click to collapse
Getting the same error, OnePlus 10 Pro NE2213
dev options enabled, OEM unlock checked, debugging enabled
device is seen in 'fastboot devices':
c:\adb>fastboot devices
84250aa3 fastboot
c:\adb>fastboot oem unlock
...
FAILED (remote: Unable to open fastboot HAL)
finished. total time: 0.002s

same happens with me.....IQOO Neo 6...
C:\Users\*****\Desktop\A13\platform-tools>fastboot oem unlock
FAILED (remote: 'Unable to open fastboot HAL')
fastboot: error: Command failed

Under developer options set the OEM unlocking ON

Relock bootloader after unlock with PotatoNV

Hi guys, I want to relock the bootloader of my Huawei P Smart FIG LX1 unlocked with PotatoNV. When I try to do the operation with adb "fastboot oem relock (or lock) 1111111111111111" I get this error message "failed: remote stat not match". But by entering the command "fastboot oem unlock 1111111111111111" the procedure is successful.
I also tried to install a stock rom but the bootloader remains unlocked. Thank you all!

Use
Code:
fastboot oem lock
or
Code:
fastboot flashing lock

Same error
remote: stat not match

i have the same problem here, flashed aex with twrp everything works fine besides safetynet, tried magisk manager but I can't flash the patched.img.
FAILED (remote: 'stat not match')
fastboot: error: Command failed

Unlock Bootloader Doogee X95

Hey all,
Trying to unlock Bootloader on Doogee X95. I've managed to get as far as selecting yes to unlock bootloader from fastboot mode however it fails. When pressing vol up it says "unlock failed" with no further reason then returns to fastboot menu.
In the cmd window the following was printed:
fastboot flashing unlock
<bootloader> start unlock flow
FAILED (remote: '
Unlock operation is not allowed
'>
fastboot: error: Command failed
Any ideas on what might be going on? Is this just one of those phones that do not allow for bootloader to be unlocked?
I've accidentally rebooted into fastboot mode menu rather than bootloader once and the info on bootloader it had was:
Bootloader version - Unknown
Trying to see if I can flash full/original android onto it to replace android go it has from manufacturer to open display over apps feature.

Failed to get unlock data

Hello. I've been trying to unlock my bootloader, but when trying to generate the key for the unlock code, I get the following message in cmd:
C:\platform-tools_r32.0.0-windows (1)\platform-tools>fastboot oem get_unlock_data
(bootloader) Failed to get unlock data.
Can anyone who has had this problem help me?

Are you in the bootloader, or did you select fastboot mode? If you're in something that says fastboot at the top, try it in the bootloader.

recently bought Pixel 2(with no sim carrier) with OEM unlock enable in developer options can't unlock it bootloader.

I recently bought a new Pixel 2 to install a custom OS. In the developer option OEM unlocked is enable. but after I tried to "fastboot flashing unlock" in cmd it return this error.
FAILED (remote: 'Flashing Unlock is not allowed
')
fastboot: error: Command failed
and when I return to Developer option the OEM unlocking become grayed out.
I could return the OEM unlocking to enabled again if I factory reset the whole phone. but I still couldn't unlock the bootloader.
how can I fix this and unlock my bootloader?
edit: i tried to used "fastboot flashing lock_critical" command but the output become.
FAILED (remote: 'unknown command')
I used this platform tool: platform-tools_r33.0.2-window
(according to this thread https://forum.xda-developers.com/t/oem-unlocking-issue-solved.3716668/)

My Pixel2 OEM Unlocking was greyed out but it appeared availble to change once I rebooted having connected to the internet. Then I was able to carry on towards unlocking etc.

tata33003 said:
I recently bought a new Pixel 2 to install a custom OS. In the developer option OEM unlocked is enable. but after I tried to "fastboot flashing unlock" in cmd it return this error.
FAILED (remote: 'Flashing Unlock is not allowed
')
fastboot: error: Command failed
and when I return to Developer option the OEM unlocking become grayed out.
I could return the OEM unlocking to enabled again if I factory reset the whole phone. but I still couldn't unlock the bootloader.
how can I fix this and unlock my bootloader?
edit: i tried to used "fastboot flashing lock_critical" command but the output become.
FAILED (remote: 'unknown command')
I used this platform tool: platform-tools_r33.0.2-window
(according to this thread https://forum.xda-developers.com/t/oem-unlocking-issue-solved.3716668/)
Click to expand...
Click to collapse
I just paid to get my Pixel XL bootloader unlocked to this guy from China
his info about unlocking the bootloader
EMAIL:[email protected]
QQ:247830063
skype id:[email protected]
you can try him to get it done.

zfk110 said:
I just paid to get my Pixel XL bootloader unlocked to this guy from China
his info about unlocking the bootloader
EMAIL:[email protected]
QQ:247830063
skype id:[email protected]
you can try him to get it done.
Click to expand...
Click to collapse
That's interesting, I just got a pixel 2 but unlocking is disabled, toggle greyed out after attempting. How much did you pay?
Does he have some alternative way to undo the restrictions?

tata33003 said:
I recently bought a new Pixel 2 to install a custom OS. In the developer option OEM unlocked is enable. but after I tried to "fastboot flashing unlock" in cmd it return this error.
FAILED (remote: 'Flashing Unlock is not allowed
')
fastboot: error: Command failed
and when I return to Developer option the OEM unlocking become grayed out.
I could return the OEM unlocking to enabled again if I factory reset the whole phone. but I still couldn't unlock the bootloader.
how can I fix this and unlock my bootloader?
edit: i tried to used "fastboot flashing lock_critical" command but the output become.
FAILED (remote: 'unknown command')
I used this platform tool: platform-tools_r33.0.2-window
(according to this thread https://forum.xda-developers.com/t/oem-unlocking-issue-solved.3716668/)
Click to expand...
Click to collapse
I'm in the same boat, tried everything I could find.
Is your pixel 2 also set to boot-slot: B by default?