On this page, you will learn how to unlock the bootloader on your Symphony X100. Using the bootloader you can install custom ROM, custom recovery, custom kernel, and flash the factory images, etc. The bootloader will help you to unlock your device legally binding, but it will affect the device warranty. Symphony doesn’t allow you to unlock the bootloader. Mostly Android OEM manufacturers lock the bootloader, if you want to install any CUSTOM ROM, you must need to unlock the bootloader of your X100. It will void the warranty.
Symphony X100 Unlock The Bootloader Quick 10 Steps
Step 01: Firstly, you need to enable the Developer Options on your Symphony X100.
Go to Settings->>About Phone->> and press the Build Number 6 to 7 times until you see a pop message that shows you “You are now a developer”.
Into the Developer Options, now you need to Enable USB Debugging,
and the OEM Unlock Option.
After that, again head to the Settings>>>>Developer Options>>>>enable USB Debugging and OEM Unlock.
Step 02: Download and setup the ADB and Fastboot tools
on your Computer.
Step 03: Now, connect your X100 to your Laptop/PC using a USB cable.
Step 04: Now, you should wait until all the USB Drivers
installed on your computer.
Step 05: Now open the CMD or command prompt and go to the same folder, where you have extracted the contents of the ADB and Fastboot tools.
Step 06: After that, type the below command into the command prompt area and press the Enter button;
Step 07: You will see a popup message on your smartphone such as “Always allow from this computer”. Now You can press the OK button.
Step 08: You should type the below command to enter the bootloader mode, and press Enter; button on your keyboard.
ADB reboot bootloader
Step 09: Now, you must enter the below command so your X100 and you will reboot into Fastboot mode;
Fastboot flashing unlock
Step 10: Now, enter again your device into the Fastboot mode using the Volume Down + Power button together.
Step 11: After that, enter the below command;
Fastboot flashing unlock_critical
Step 12: That’s It! You have successfully unlocked the bootloader of the Symphony X100 device.