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Unable to unlock Bootloader of Meizu m6 m711h

I have meizu m6 m711h with:
Android 7.0
Flyme 7.1.2.0G
I am trying to unlock its bootloader but adb is not recognize the device.
Tried with different drivers pdaNet method as well but no success.
Can someone guide me how to unlock the bootloader ? Want to install a good custom rom in my phone.
Update:
I have managed to boot into fast boot mode now adb is recogaizig the phone and fastboot as well but, when I use fasboot oem unlock it does not work.
online tutorials says I should find OEM Unlock option in developer options to make fastboot oem unlock work but there is no such option in developer options.

Hi!Yes,I'm late,but want to say that we can't unlock bootloader on this device. Company"Meizu" don't give this opportunity. Many users from other forums have tried to unlock,but all attempts have failed. OEM Unlock option is absent.

[Realme 5i] HOW TO unlock bootloader && access fastboot

Hello,
Did anyone managed to unlock bootloader on Realme 5i ?
I flashed the latest Android 10 firmware from RealMe website, everything went ok, but now I want to unlock bootlader to root the device, and it seems that nothing helps.
Please help, thanks

how to unlock the bootloader in Realme 5i RMX2030
Here is a good guide that worked for me to unlock the bootloader:
www ytechb com/how-to-root-realme-5i-and-unlock-bootloader/
The root part didn't work, Magisk complains about unknow boot image format

G0bl1n said:
Here is a good guide that worked for me to unlock the bootloader:
www ytechb com/how-to-root-realme-5i-and-unlock-bootloader/
The root part didn't work, Magisk complains about unknow boot image format
Click to expand...
Click to collapse
I've done the in-depth test and it's on the Fastboot screen but when I type fastboot flashing unlock in a command window it just shows me the help text for fastboot, which doesn't show any command or option for either flashing or unlock, so how can I get it to work if those aren't valid commands?
fastboot devices shows my phone, so the device is recognised.
EDIT: I'm still on Android 9 A.15. I understand that there's no unlocked for Android 10 yet.
EDIT: Nevermind. I was using adb/fastboot from the link in this guide, which is v1.3 https://www.ytechb.com/how-to-root-realme-5i-and-unlock-bootloader/
After I updated to minimal v1.43 from here it worked https://androidmtk.com/download-minimal-adb-and-fastboot-tool

My problem was same. But i successfully downgrade to color os 6. I guess you can try it too.
Enable USB Debugging and Allow unlock boot loader option in USB debugging.
Connect your mobile with PC and use following Command.
adb reboot bootloader
fastbook flashing unlock
Check mobile for unlock option.

How did you downgraded to colour os 6?
I'm trying to root my realme 5i that i upgraded to 10.
Can you help me?

M. Farhad said:
My problem was same. But i successfully downgrade to color os 6. I guess you can try it too.
Enable USB Debugging and Allow unlock boot loader option in USB debugging.
Connect your mobile with PC and use following Command.
adb reboot bootloader
fastbook flashing unlock
Check mobile for unlock option.
Click to expand...
Click to collapse
what's the next step

Pixel 3a - OEM Unlocking is active but no option to unlock bootloader

Hi Everyone,
I'm having some difficulties unlocking my Pixel 3a to install a ROM.
I have activated developer options, activated OEM Unlocking, but when I get into the bootloader, there is no option to unlock the bootloader itself...
The only options I have are :
Start
Power off
BarCode
Recovery Mode
Restart Bootloader
I have no idea what's happening and haven't found anything online that would even hint at what is wrong. Does anyone have any idea about what is going on with this ?
Thanks for your help.

when booted to bootloader you need to execute the command
'fastboot flashing unlock'
see here:
How to Unlock the Bootloader on Your Pixel 3a
The first thing you'll always have to do before getting your customization game on with most phones is to unlock the bootloader. Doing so opens the true potential of the device, allowing you to root, install TWRP, Magisk, custom ROMs, and other mods. No matter your wants or needs, there's no way...
android.gadgethacks.com

To Unlock bootloader
- Install adb and fastboot on your PC. https://dl.google.com/android/repository/platform-tools-latest-windows.zip
- Run through the initial setup if you haven't already, if you haven't don't bother logging into your google account.
- Enable dev options(settings>about phone>build number>tap it 7 times).
- Go into settings>system>advanced>dev options>oem unlocking, click the toggle.
- While still in dev options scroll down a little and enable usb debugging.
- Plug your phone into your pc. If or when the phone asks you to trust the computer make sure to check the "always allow this computer" check box.
Open up command prompt type into the cmd window
adb reboot bootloader
The phone will reboot into fastboot mode.
Now type into the cmd window
fastboot devices
See if it lists a device, if not you need to install the drivers I linked to. If you had to install the drivers try the fastboot devices command again after installing them, it should list the device now.
type in:
fastboot flashing unlock
You will then have to use the phone to select yes to the unlock. you use the volume keys to select and the power button to confirm.
Your bootloader is now unlocked and you follow one of the root methods.
reboot your phone

Help unlocking Bootloader for flashing stock Rom

So I had actually posted about this phone already but I wanted to get a seoerate discussion on unlocking
I am currently trying to flash a stock Rom to an Asus ZenFone 5Q ZC600KL X017DA with a Qualcomm chipset
The issue with the phone is that it's stuck on the logo when turning on it will say powered by Android then goto Asus then stops there
Factory reset is out of the question as the hardware keys only bring me to CSC fastboot mode
Now here is my problem the bootloader is locked and when running device info command in fastboot on laptop it will say something along the lines device unlock false same for unlock critical false
To unlock the boot loader everywhere is telling me I need to enable the slider for OEM unlock in developer and also enable USB debugging and Asus has an unlock tool but it's an apk file
Now as phone is stuck on logo when turning on I obviously cannot enable the OEM unlock it even enable USB debugging
So my goal right now before I proceed with flashing stock Rom is to get the bootloader unlocked
Is there any way to do this any software I can download with instructions or any options to unlock the bootloader via EDL mode
Is there an option to wipe out the bootloader and reinstall it from a firmware
Or is there something like TWRP that I can flash over to the phone under EDL that will give me options to unlock
Thanka

zte a7 blade 2019 instant switch to os from fastboot*

Hi, i am loading booting to bootloader from adb with commnad (adb reboot bootloader) this isnt working, only restart its instantly switch to normal os, any ideas ?

Run
Code:
adb reboot
or
Code:
fastboot reboot

oh sorry man, i am idiot, and i am say it wrong.. I trying boot to fastboot but not working instantly switch to os, any ideas please ?

Unlock bootloader if not done yet.

where i unlock bootloader ? In developer settings ? (i have unlocked)

Enabling OEM Unlock in Developer options doesn't unlock the bootlader, it simply prepares the bootloader to get unlocked via fastboot command.
More info here:
How to Unlock Bootloader via Fastboot on Android
Unlocking the bootloader via Fastboot is the easiest thing to do. But not all Android devices support straightforward bootloader unlocking. Many manufacturers put up a setup on their devices to let…
nerdschalk.com

xXx yYy said:
Enabling OEM Unlock in Developer options doesn't unlock the bootlader, it simply prepares the bootloader to get unlocked via fastboot command.
More info here:
How to Unlock Bootloader via Fastboot on Android
Unlocking the bootloader via Fastboot is the easiest thing to do. But not all Android devices support straightforward bootloader unlocking. Many manufacturers put up a setup on their devices to let…
nerdschalk.com
Click to expand...
Click to collapse
Only I have a small problem I don't unlock my bootloader via fastboot when it doesn't work :/ It immediately jumps to my system when I boot fastboot, even with a command like ,,adb reboot fastboot"

Matyas66055 said:
Only I have a small problem I don't unlock my bootloader via fastboot when it doesn't work :/ It immediately jumps to my system when I boot fastboot, even with a command like ,,adb reboot fastboot"
Click to expand...
Click to collapse
I have new thread, where i am writing all info :/ https://forum.xda-developers.com/t/zte-blade-a7-2019-fastboot-mode-missing.4462035/

I don't know if you are still interested in accessing Fastboot but you can access it using a specific firmware version.
Still, let me tell you that unlocking the bootloader is virtually impossible. Since the well-known generic method doesn't work for the SoC SC9863A, you need to have a special Fastboot's program version and a dedicated private key that only they provide.... and I emphasize the word "dedicated" since apparently ZTE did not use a generic key to sign their ROMS. At least on this device.
Unless they decide to release the key or give support to unlocking the bootloader, all we can do is wait for them to change their minds. Because they don't want to provide it. I know because I tried to order it several times.