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How to Bootloader on Koolnee K5 via ADB Fastboot

On this page, you will learn how to unlock bootloader on your Koolnee K5. Here we will provide you a complete guide step by step on how to unlock your phone. But before start the unlocking process, you must take a look at what is unlock bootloader and what advantages and disadvantages are there if you unlock the bootloader? If you are looking to custom ROM, custom recovery, custom kernel or want to flash the factory images of your Koolnee K5. You know that bootloader unlock is the best way to custom recovery, custom kernel, and factory flash of your device. Of course, bootloader unlocking is legally binding and it will affect device warranty. Koolnee doesn’t allow you to unlock the bootloader.

How to unlock the bootloader on Koolnee K5 via ADB Fastboot

1. If you want to save your all data such as images, videos, and files. You must backup your Koolnee K5. The Bootloader unlocking process will affect your data.
2. First of all, you must download and install the Android USB Drivers. Now extract the ADB Fastboot set up in your PC / laptop in the C:/ Drive.
3. Before unlocking the bootloader, you need to activate the developer option to Enable OEM Unlock and USB debugging.
4. Now Go to Settings –>> System –>> About Phone and press on Build Number 6 – 7 times to activate the developer option. See the below image.

how to enable developer option

5. Now open the developer option and enable the OEM to unlock and USB Debugging.
how to enable the oem unlock

6. Now connect your phone to PC using the original Type C cable.
7. Once it connected, open the ADB folder inside the C:/Drive
8. On your ADB Folder, Open the command window / PowerShell: To open Press the Shift key and Right Mouse click anywhere inside the folder, see the below image.

ABD command window

9. First of all, please open window command, now enter the below-given commands to verify that your device is connected with PC:
ADB devices
10. If the command show device is unauthorized on your Koolnee K5. Then, you will see a popup message to allow USB Debugging. You may also enable always allow from this computer and press on the OK button.

ABD command window

11. The next step is; you can enter the bootloader or ADB Fastboot mode on your Koolnee K5 device, using the command below.
adb reboot bootloader
12. Your K5 smartphone will boot into bootloader mode, now check command, if your device is connected properly to ADB fastboot mode ->>
fastboot devices
13. Your device value will be shown; if connected properly. If not, then make sure to download the latest USB Drivers, and follow the steps again.
14. To unlock the bootloader, please write the below-given commands and press the enter.
ADB fastboot flashing unlock
15. Now, click on the enter button on your Koolnee K5 smartphone will show you a warning message about the risks of the bootloader unlocking. Now you can confirm using the Volume Key then enjoy unlocked your K5. using the bootloader method. Your device will produce a factory reset, and once you must reboot. The device will look the same interface just like the out of box setup.
16. Once you have done, you can reboot your device using the command ->>
fastboot reboot
17. Using the above-given steps you can unlock the bootloader on your Koolnee K5.
You can now go ahead, to root your device, and install various MODs, custom ROMs or modify the firmware of your device.

How to Unlock Bootloader Video Tutorial?

Video Tutorial

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We hope you have understood all of the above steps carefully. You have done successfully unlocked the bootloader of your K5 phone.
Note that this is method is only for unlocking the K5 smartphone. Comments us if you have any issues while unlocking the bootloader.

The Koolnee K5 comes with 64GB internal memory with 6GB Ram. It is powered by Android 8.1 (Oreo), it has a powerful Octa-core 2.0 GHz ARM Cortex-A53 CPU, and MediaTek Helio P23 (MT6763V) chipset. The smartphone comes with 6.1 inches, 92.9 cm2 (~81.2% screen-to-body ratio) with 1080 x 2160 pixels, 18:9 ratio (~403 ppi density) resolution, and Non-removable Li-Ion 8000 mAh battery. Koolnee K5 comes the primary camera is Dual: 13 Megapixels + 2 Megapixel Dual LED Flash, and secondary camera is 13 Megapixels. The Koolnee was announced their latest K5 is powered by Android 8.1 (Oreo), which is run on GSM / HSPA / LTE / 2G / 3G / 4G technology, this device was announced on 12 April, 2018, and the release date of the device is 14 April, 2018.

NOTE: The bootloader will wipe off the entire data. Follow the steps very carefully to avoid permanent damage or bricking of your device. If anything goes wrong the author or getdroidpro.com is not responsible for it.

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