What is Bootloader ?

> Hey Guys, Did you heard anything Like Bootloader. I'm sure your answer will be No,

Thats Why I wrote This Post.


What Is A Bootloader?

> In literal terms, the bootloader is code that is executed before any Operating System starts to run. Bootloaders basically package the instructions to boot operating system kernel and most of them also have their own debugging or modification environment. Think of the bootloader as a security checkpoint for all those partitions. 

As the bootloader kicks off before any piece of software on your device, it makes it extremely processor specific and every motherboard has its own bootloader.

Every Android phone has a bootloader that instructs the operating system kernel to boot normally. But you need to understand one thing here that as Android OS is an open source OS and is available on a variety of different hardware, every manufacturer has their own version of bootloader specific for the hardware present in its environment.

Why Bootloader's are Locked ?

> A bootloader is usually locked on smartphone by OEM because they want you to stick to their stock OS. With locked bootloader its completely impossible to flash any custom rom , recovery , kernels. If you forcefully try to install anything then it wills surely broke your hardware. 

> Still Many Manufactures are providing their smartphones with unlocked bootloader. Like Micromax , XOLO and Many other Indian and Chiniese Companies.

> On the Other hand Companies like Motorola , Google , LG , Samsung etc are giving their every smartphones or Tablets with Locked Bootloader.

* Therefore , First Step Should be Unlocking Bootloader.


How to Unloack Bootloader ?

> Backup Everything you want First

 Install the Android SDK and Your Phone’s Drivers

> Connect your phone to your PC with a USB cable. 

> Open Command Prompt (Typr below Commands)

1. adb shell (to connect phone)

2. adb reboot-bootloader (to reboot into bootloader(fastboot) mode)

3(a). fastboot oem unlock (to unlock device)  

(If you have newer device)

Then,

3(b). fastboot flashing unlock

> If you have a non-Nexus device, your manufacturer will tell you what command to run. Motorola devices, for example, need to run fastboot oem unlock UNIQUE_KEY, using the unique key from the email you received. HTC devices will run fastboot oem unlocktoken Unlock_code.bin using the Unlock_code.bin file you should get from HTC.

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