Why flashing android

The stock ROM refers to Android version which is officially provided by mobile company along with the device; a custom ROM, on the other hand, is Android version that is customized and distributed by other developers. Why do so many users want to root their Android devices? Because only by rooting, they have the privilege to do things that is inaccessible to normal users : remove build-in apps that barely being used, install apps that is blocked by carriers, change keyboard, themes or other settings, add features like widgets in notification bar, speed up the device, improve battery life and more.

If you need the above features to fit your personalized needs, you may want to think about getting your Android device rooted.

What especially worth mentioning is that there is a certain amount of users rooting their Android phones to flash a custom ROM.

Though rooting is not necessary for flashing, but in some cases, when unlocking bootloader during flashing, root access is needed. The reasons to root Android devices and the reasons why flashing a new ROM sometimes overlap. Some users flash a new ROM to modify the Android operation system of their smartphones , such as getting new features and customizations, removing bloatware, altering custom UI. More users flash their Android phones to keep the devices up to date.

The reality is that most phone manufacturers and carriers tend to focus on developing new phones while stop updating their older models. So the owners of these devices have to flash a custom ROM on their devices so that they can still enjoy the later versions of Android and have a new experience. Other than that, if you want to unroot your phone or fix problems such as phone stuck during booting, system crash or instability, flashing a stock ROM to your device could be an effective solution.

Both rooting and flashing give you the ability to modify the Android operation system, but both of them come with some side effects. Users can use different methods to backup as per our article on taking backups depending upon whether the device is rooted or not. Backups make sure that users can return to a pre-flash stage if something goes wrong with the process and not lose their precious apps and data.

The next step in this process is determining whether the device has an unlocked bootloader or not. A Bootloader is the program which loads the OS into the Phone memory once the device is booted or started, and a locked bootloader will only allow an OS with an approved OS signature to load, in process blocking any custom OS.

Thus it is important to unlock the bootloader before a ROM is flashed. Given that users flashing a custom ROM generally use a rooted device, there is a very high probability that the bootloader will already be unlocked.

However, rooting does not necessarily require an unlocked bootloader. Many devices come with unlocked bootloaders from factory, and therefore users with these devices can skip this step. Users with devices having locked bootloaders can google or take help from various Android forums such as XDA-developers to get the device specific steps to unlock the bootloader on their device. Users can now reboot their devices to recovery, in order to wipe device memory and storage. Each device has a specific key combination, which when pressed during boot will take them to the recovery console.

Here users should wipe cache , dalvik cache and factory reset their device, which essentially implies cleaning apps and existing firmware. Basically, the Android screen flickering issue occurs when the system hardware switches between the CPU and the GPU for displaying content on the screen. By toggling on the Disable HW overlays option, you can physically eliminate the Android screen flickering issue by putting the display operation under the GPU.

Rooting a phone will not carrier-unlock it, but it will let you customize the operating system or install a new one. The flashing process will begin and should take about 10—12 minutes. Skip to content Android Windows Linux Apple.

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