How to Unlock Bootloader on Android Phone
How to unlock the bootloader on an Android phone is the first step to rooting and flashing a custom ROM. Many people do not know this. In fact, unlocking the bootloader is very important.
There are two types of smartphones, namely allowing to unlock the bootloader and not. It is permissible or not to check the unlock bootloader method depending on the brand and type of cellphone.
Before unlocking the bootloader, you should do a data backup, because the bootloader unlock process will delete all data from the cellphone.
The following is a way to unlock the bootloader that you can try.
How to Unlock Bootloader Officially
Here's how to unlock the Xiaomi bootloader without a PC or other phone, quoted from the How To Geek page:
1. Install Android SDK Manager and Phone Driver
Before unlocking the bootloader, you must install the Android SDK Manager on your PC. You can get this application on the official Android Developers page.
How to Unlock Bootloader on Android Phone (1)
How to download Android Android SDK Manager on the Android Developer page. Photo: Shofura tone/coil
Go to the official Android Developers page and search for 'Command line tools only', then download according to PC type.
In addition to the Android SDK Manager application, you also need a USB Driver for HP which can be downloaded through your HP brand's official website.
After that, connect your cellphone and computer with a USB cable. Open the Android SDK Manager app and click on the 'Tools' folder. Hover over an empty area, then click 'Shift+Right-click' and select 'Open a Command Prompt Here'. Next, type:
adb devices
If it shows your mobile serial number, then the phone will be recognized and you can continue the process.
2. Enable USB Debugging and OEM Unlocking
The next way to check the unlock bootloader without a PC is to activate USB Debugging on your cellphone. The trick, open the 'Settings' on the cellphone.
Then, click 'About Phone' and select 'Build Number' seven times.
After that, return to the initial settings menu and the 'Developer Options' will appear. You need to enable 'OEM Unlocking' and 'USB Debugging'. Then, connect your phone with your computer again.
How to Unlock Bootloader on Android Phones (2)
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How to enable OEM unlocking and USB debugging. Photo: How To Geek
3. Get Unlock Key
Some HP brands may require this step. If so, you need to open the bootloader unlock page on your HP brand's official website. Next, follow the required steps:
How to Unlock Bootloader on Android Phone (3)
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How to get bootloader key for HTC devices. Photo: Shofura tone/coil
After that, enter the prompt code that has been obtained. Right click on an empty page of the Android SDK Manager folder.
Then, select 'Open a Command Prompt Here' and type the prompt code, (for example on Motorola: get_unlock_data and on HTC: get_identifier_token).
The Command Prompt will issue a token in the form of a very long character string. Copy the text and copy it to your HP manufacturer's website in the box provided.
4. Unlock Bootloader
Open the fastboot menu on your cellphone by pressing 'Power + Volume Down' for 10 seconds.
Don't forget to connect your phone with a computer that has Android SDK Manager installed.
Click an empty area in the Android SDK Manager and click 'Shift + Right Click'. Then, select 'Open a Command Prompt Here'. Type the command:
fastboot oem unlock
The command above is the most common example, you can find out what to type through the HP manufacturer's official website.
After entering the command, the phone will ask you whether you are sure you want to unlock the bootloader or not. Use volume keys to confirm.
If the process is complete, reboot your phone and you will get a notification if the bootloader is unlocked.
That's how to unlock the bootloader that you can try to unlock the bootloader on your phone.
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