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unlocking bootloader

hey please help i am unable to unlock boot loader of my coolpad note 5 which has snapdragon 617 soc, no unlock code type help or instruction on official forum and no help there because all command returns as unknown command ,
i tried many command except these two command all return unknown command ,
fastboot devices works shows device no
fast getvar all works showing something
i checked all driver installed properly and pc showing it on device manager as fastboot device even fastboot recognized it as a fastboot devices, also i allow oem unlocking on developer setting and enabled usb debugging
after this all command like
fastboot oem unlock
fastboot oem unlock-go
fastboot boot
fastboot reboot
fastboot flashing unlock
fastboot oem device-info
fastboot flash
all and more i found i net returns unknown command remote
i tried with vendor id but no result
i checked fastboot getvar all returns its kernal as lk
so do little kernel has problem , i have its firmware package but not found aboot.c
please help its unrooted
attached error command screenshot in zip

fastboot error commands

plse help, fastboot oem get_unlock_data this command giving error FAILED(remote:unknown command), i have moto c plus, need to unlock bootloader, how i can get my device id from fastboot, any other commands is their? for get device id from fastboot, fastboot oem get_unlock_data this command not working for me, communication bwt pc&mobile is well, but giving error for getting unlock data,....... any idea???

Razer bootloader unlock

Hi,
I'v got used Razer phone today with Oreo 8.1, tried to unlock boot but it failed. Commands I've ran so far (debug and oem unlock both on)
adb reboot bootloader
got the download mode
android bootloader interface version 11 driver from google.
fastboot -i 0x1532 devices
xxx40xxxx fastboot (xx are numbers)
then
fastboot -i 0x1532 flashing unlock
...
FAILED (command write failed (No error))
finished. total time: 0.004s
on the phone download mode words disappeared and no driver appear in the PC
also tried another root method with posted here in XDA for Oreo but still not working.
Please I need help as I bought the phone to root and enjoy it
Majed

NeverMind, used another laptop and i was able to do it... I think AMD has some usb filters or something

Problem with unlocking OnePlus Nord bootloader

I have been trying to unlock my oneplus nord's bootloader but when I enter "fastboot oem unlock" with my phone in fastboot mode it says "
FAILED (remote: 'Command not supported in default implementation')
fastboot: error: Command failed
"
Even though I have oem unlock and USB debugging enabled in the developer settings! Please help
(EDIT: I fixed it, it turns out I used "./adb reboot fastboot" instead of "./adb reboot fastboot")

It has been fixed

Can you please delete this post, the forum is dedicated to custom roms, not peoples problems with the phone.

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?