[hovatek]

To successfully unlock the Bootloader of the Tecno Camon C9 or C9 Pro:

* Backup your important stuff as unlocking the Bootloader wipes your data
* Enable USB Debugging on the Tecno C9 (see https://forum.hovatek.com/thread-10109.html)
* Enable OEM Unlocking under Settings > Developer options
* Setup ADB and Fastboot on the PC (see https://forum.hovatek.com/thread-588.html)
* Connect the phone to the PC via USB cord (while On)
* Launch ADB
* In ADB, run the following command (press Enter after the command)

Code:

adb devices

* ADB should detect the device. If ADB detects other devices but not the Tecno C9 or C9 Pro  then it must be an ADB clash, see https://forum.hovatek.com/thread-10111.html
* Once the device gets detected, boot it into Fastboot by running the following command (press Enter after the command)

Code:

adb reboot-bootloader

* The phone should now enter Fastboot (black screen with only fastboot written at the top or bottom)
* In Fastboot, run the following command (press Enter after the command)

Code:

fastboot oem unlock

* You should get a prompt on the device asking you to confirm Bootloader unlock, press the volume up button for Yes
* You should now get a success message
* Reboot the device by running the command below (press Enter after the command)

Code:

fastboot reboot

[Olorunffunmi]

Bootloader not unlocking, I am getting "unlock operation is not allowed" on the system after clicking the volume up button of my C9

[hovatek]

Bootloader not unlocking, I am getting "unlock operation is not allowed" on the system after clicking the volume up button of my C9

You probably didnt enable OEM unlocking as instructed by the guide

[sarry86]

Bootloader not unlocking, I am getting "unlock operation is not allowed" on the system after clicking the volume up button of my C9

You probably didnt enable OEM unlocking as instructed by the guide

Does this erase all my data as i was warned inside the unlocking process??

[oprezy]

nice tut. thanks @hovatek

[hovatek]

Does this erase all my data as i was warned inside the unlocking process??  

Yes, it does.
Ensure to backup your stuff

[harry56]

I'm sorry but I don't know anyone that has a model that is same model with mine. The chipset is Qualcomm Snapdragon 430 MSM8937, 2016, 64 bit, octa-core, 28 nm, Qualcomm Adreno 505 GP.

[dpol]

Hi, Hovatek,
My phone didnt proceed 4rm the blank space with ''fastboot''. Didnt pop up any msg after i entered d unlock command - ''fastboot oem unlock''. 
Pls, help.

[hovatek]

Hi, Hovatek,
My phone didnt proceed 4rm the blank space with ''fastboot''. Didnt pop up any msg after i entered d unlock command - ''fastboot oem unlock''. 
Pls, help.

reboot the phone into fastboot and retry

[dpol]

Stil d same thing after reboot into fastboot