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[Tutorial] How to unlock Unisoc (SPD) bootloader using Identifier Token
[Tutorial] How to unlock Unisoc (SPD) bootloader using Identifier Token
(12-02-2020, 06:25 PM)hovatek This tutorial will explain how to unlock a Unisoc / Spreadtrum (SPD) Android device's bootloader using its Identifier Token. This guide is ideal for those who had tried the generic fastboot bootloader unlock guide but had no success due to fastboot commands not getting recognized e.g
Code:FAILED (remote: 'unknown cmd.')
fastboot: error: Command failed
Requirements
- Basic Linux and command line knowledge
- A Linux based PC or Ubuntu Live USB on a Windows PC
- Enable USB Debugging and OEM Unlocking on the device
- Get the device into Fastboot
- Download modified fastboot @ https://mega.nz/#!WCAgFCTY!0nwMwAlnKXkYR...IwDGbSmlPU
How to unlock Unisoc (SPD) bootloader using Identifier Token
Follow the steps below to unlock the bootloader of Unisoc (SPD) devices
See the Video below or @ https://youtu.be/HhBTezxlAYw
- Open the modified_fastboot folder, right-click then select Open in Terminal
- Test detection using
Code:./fastboot devices
- Get Identifier Token using
Code:./fastboot oem get_identifier_token
- You should get an output like
Identifier token:
XXXXXXXXXXXXXXXXXXXXXXXX
OKAY [ 0.019s]
finished. total time: 0.019s
- Copy out the Identifier token
- Run this command ; replace XXXXXXXXXXXXXXXXXXXXXXXX with your Identifier token
Code:./signidentifier_unlockbootloader.sh XXXXXXXXXXXXXXXXXXXXXXXX rsa4096_vbmeta.pem signature.bin
- You should have an output like
Identifier sign script, ver 0.10
1+0 records in
1+0 records out
50 bytes copied, 0.000257562 s, 194 kB/s
Identifier sign successfully
- You should also see a signature.bin file in the modified_fastboot folder
- Finally, run this command
Code:./fastboot flashing unlock_bootloader signature.bin
- You should get a prompt on the device asking you to push a volume button to confirm unlock, do so
- You should now have an output like
downloading 'unlock_message'...
OKAY [ 0.001s]
unlocking bootloader...
Info:Unlock bootloader success! OKAY [ 85.787s]
finished. total time: 85.788s
- Reboot the device using
Code:./fastboot reboot
- Your bootloader should now be unlocked
Important Notice
- You can enter bootloader by first booting the device into recovery mode then selecting Reboot to Bootloader
- This guide isn't guaranteed to work on all Unisoc devices especially if they require a different private key
- Unlocking bootloader wipes your data so ensure to backup important stuff first
- To hide the Warning: Lock flag is : unlock, skip verify!!! message, try flash stock vbmeta using
Code:fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img- For those who wish to relock their bootloader, then simply run the fastboot command below
Code:fastboot flashing lock_bootloader- If you run into permission issues while running fastboot then run
and cd back into the fastboot folderCode:sudo -i
sudo usermod -aG plugdev root
- If you still encounter permission denied error then right click the fastboot file > permissions > tick the checkbox for allow executing as a program then save and retry running a fastboot command
- If you encounter /usr/bin/dd : input/output error, then the current folder dd has no write access to the current folder. Change the permissions of the current folder
- Credits goes to ruslan_3_ for originally sharing the bootloader unlock tool & Petercxy
Video Transcript
Quote: In this video tutorial, I'll be explaining how to unlock the bootloader of a Unisoc (Spreadtrum) Android 9 (Pie) device using its unlock token. Now, you're going to need this modified fastboot. You're also going to need this private key used to sign a lot of Unisoc devices. You're going to need these scripts. Also, you're going to use a Linux based PC so make sure you get that in place. Now, once you have these in place, launch terminal by right-clicking and you select Open in Terminal.
Now, you're going to (or might) run into a couple of issues when using Linux as I did so this is just how to go about (fixing) them. You're going to first elevate your permission level then you're going to run this command to enable you have the permission you need to run fastboot. Now you're going to cd back to the fastboot folder so you just copy the path up here, paste then you tap Enter. Now you're back in fastboot directory. You boot the device into fastboot mode, you can use any method you wish. I boot from recovery mode usually and then I have detection. Next you get the identifier token by running this command.
Now, you select the identifier token then you paste it into this next command. Make sure there's just a space between the token and the private key in the command. Now you select.. sorry, select this, paste and and run (tap Enter). This is going to generate a signature.bin file. Yes, this is the file. Now, you're going to unlock bootloader proper. You paste. At this point, usually, your device is going to request for you to hold a button. I'm yet to run the command though but usually, your device would ask you to authenticate or verify Bootloader unlock either by pressing a button or thereabout. I'm going to run this right now and on my device, I have a confirmation prompt. In my case, I need to just tap volume down. Its going to vary with yours.
Once that is done, you're going to have the phone going into Erase Mode. Its going to erase your data so ensure you had backed up your important stuff before unlocking the bootloader and wait till that is done. Once the bootloader is done (with) unlocking, you're going to have a success message like I have here. At this point, you can either disconnect and boot up the device by holding the power button or you could run fastboot reboot. So that's how to unlock the bootloader of a Unisoc (SPD) Android 9 (Pie) device using its unlock token.
