This guide will walk you through the process of unlocking the bootloader on your Lenovo Vibe K5 Plus smartphone. Please note that unlocking the bootloader may void your device’s warranty. However, doing so gives you the freedom to install TWRP recovery, flash rooting files, or install custom ROMs on your phone. For a detailed explanation of what unlocking the bootloader entails, read the section below. Follow this guide carefully to unlock the bootloader on your Lenovo Vibe K5 Plus, and remember, this method is specifically for this device. While the steps are straightforward, it’s crucial to follow them precisely.
What is a Bootloader and Why Unlock It?
A bootloader is a program that runs every time you power on your device. It initializes the hardware, loads the kernel and ramdisk, and starts the boot process. This concept applies to all technology, including laptops, PCs, smartphones, and more. Most Android OEMs lock the bootloader by default, even though Android is an open-source platform. This restriction makes it impossible to install a custom ROM without first unlocking the bootloader.
Manufacturers lock the bootloader to encourage users to stick with the stock ROM, and unlocking it typically voids the device’s warranty. However, unlocking the bootloader opens up a world of possibilities. It allows you to root your Android smartphone, install TWRP recovery, and flash custom ROMs. By unlocking the bootloader, you can fully customize and optimize your device according to your preferences.
About Lenovo Vibe K5 Plus
The Lenovo Vibe K5 Plus, launched in February 2016, features a 5.00-inch display with a resolution of 1080 x 1920 pixels, delivering 441 pixels per inch. It is powered by a Qualcomm Snapdragon 616 processor paired with 2GB of RAM. The device is backed by a 2750mAh removable battery and includes a 13-megapixel rear camera and a 5-megapixel front camera for selfies. The phone comes with 16GB of internal storage, expandable up to 32GB via microSD card. It runs on Android 5.1 Lollipop with Lenovo’s custom UI. Connectivity options include Dual SIM, Wi-Fi, GPS, Bluetooth, FM, 3G, and 4G.
Prerequisites to Unlock Bootloader on Lenovo Vibe K5 Plus
- Charge Your Phone: Ensure your phone is charged up to 70-80%.
- Warranty Warning: Unlocking the bootloader may void your warranty.
- Data Backup: Unlocking the bootloader will wipe all data, so back up your smartphone.
- Follow Instructions Carefully: Ensure you follow all steps precisely to avoid damaging your phone. We are not responsible for any potential damage.
What Do You Need?
Steps to Unlock Bootloader on Lenovo Vibe K5 Plus
- Enable Developer Options:
- Go to
Settings -> About -> Software Information -> More.
- Tap on
Build Number 7-8 times until you see the “Developer option enabled” pop-up. 
- Enable OEM Unlocking and USB Debugging:
- Go to
Settings -> Developer Options.
- Enable
OEM Unlock and USB Debugging.
- Download and Extract ADB Fastboot:
- Download and extract the ADB Fastboot zip file on your PC.
- Connect Your Phone:
- Connect your Lenovo Vibe K5 Plus to your computer via USB cable.
- Wait for all drivers to install.
- Open Command Prompt in ADB Fastboot Folder:
- Open the ADB Fastboot folder.
- Press
Shift + Right Click and select Open Command Prompt Here.
- Check Device Connection:
- Type the command:
adb devices.
- If a pop-up appears on your phone to allow USB Debugging, click OK.
- Reboot to Bootloader:
- Type the command:
adb reboot bootloader.
- Your phone will reboot into the bootloader.
- Verify Device in Bootloader:
- Type the command:
fastboot devices.
- Ensure your phone’s serial number appears. If it doesn’t, reinstall the drivers.
- Unlock the Bootloader:
- Type the command:
fastboot oem unlock.
- This process will wipe all data from your device.
That’s it! Your Lenovo Vibe K5 Plus bootloader is now unlocked. You can now install custom ROMs, TWRP, or root your device.
If you have any questions or doubts about unlocking the bootloader on your Lenovo Vibe K5 Plus, feel free to leave a comment below. Thank you!
i tried to unlock bootloader as mentioned above but i get message:FAILED (remote:oem nlcok is not allowed)