The new Blackview Rugged Smartphones and Tablets Android device comes with a locked bootloader; You can’t flash recoveries like TWRP or other .img files until you unlock the bootloader. But after unlocking the Android bootloader, you can flash any recovery, modded image file, and even root the device. Blackview has not released an official bootloader unlock guide, but there is a way to still unlock the bootloader of Blackview phones. In this guide, we will share a free method to unlock the bootloader of Blackview phones using the fastboot OEM command.
Unlocking the bootloader is a straightforward process. Any Android user can do that. Blackview also supports it, but only for their own phones; some other Android phones may not support it directly. Unlocking the bootloader via fastboot. Many Android vendors, including Huawei, LG, HTC, Motorola, and Sony, don’t support direct bootloader unlocking. You must request the unlock code through their official website, and then you can unlock it. However, Blackview has not yet launched an official bootloader unlock website; however, an unofficial free method is available. A 4pda forum member has posted a free Blackview bootloader unlock guide via the fastboot method. We will show you how to do it.
Key Notes
- Blackview devices come with a locked bootloader, preventing custom recoveries and rooting until unlocked.
- You can unlock Blackview phones using a fastboot method, which is detailed in an unofficial guide.
- Unlocking the bootloader allows installation of TWRP Recovery, custom ROMs, and device customization.
- Be cautious, as unlocking may decrease device security and affect certain apps, especially banking apps.
- Ensure to backup your data and follow prerequisites like enabling Developer Options and installing necessary drivers.
Benefits of Unlocking Bootloader:-
After unlocking the Bootloader, you will be able to install TWRP Recovery, root the device, install custom ROMs, and customize the device. Also, you can unbrick the device with the flash boot.img, system.img, recovery.img, userdata.img. You can flash a full ROM after unlocking the bootloader.
There are particular disadvantages also. The most critical function of the simple fact your cellphone becomes marginally less protected. If you are not careful, a hacker can compromise your mobile device by installing malicious programs. Some programs, typically from banks, also limit certain aspects of the program’s functionality on unlocked devices.
Note: Unlocking the bootloader will completely reset your device. So first backup apps, Contacts, Messages before start the process.
Supported devices:
Blackview Rugged Smartphones and Tablets.
Pre-requisites:
- Before starting the Bootloader Unlock process, complete a full backup of your device, including apps, Contacts, Messages, Gallery files, and Internal Storage Files.
- Charge the device for the interrupt installation.
- Install Google ADB-FASTBOOT Driver.
- Enable Developer Options, USB Debugging, and OEM Unlock to connect your device in ADB and fastboot mode.
- Download fastboot Tool ⇒ ADBfastboot Tool
How To Unlock Blackview Phones Bootloader via fastboot Method
1. First, read the Prerequisites and Enable Developer Options, USB Debugging, and OEM Unlock.
2. Download and unzip ADB fastboot Tool.
3. Connect your device to the PC and go to the platform tools folder.
4. Now open the command prompt and navigate to the ADB & fastboot folder by holding Shift + Mouse Right Click and typing the commands one by one.
adb reboot bootloader
- If you see the “Allow USB Debugging” prompt on your phone, Then Enable the “Always allow from this computer” and tap OK.
- This command will reboot your device into fastboot mode. Alternatively, you can manually enter fastboot mode by holding the Volume UP and Power keys together.
5. Use this command to unlock the Blackview Phones’ Bootloader.
fastboot oem unlock
or (for new phones).
fastboot flashing unlock
and then
fastboot flashing unlock_critical
6. Press the Volume Up or Down key on your phone to confirm unlocking use fastboot OEM lock or fastboot flashing lock commands to relock the bootloader.



hello, I have a blackview a85 phone, unisoc t606 processor, I can’t unlock the bootloader in any way, not a single instruction works in either Windows or Linux, can you help me