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Flash a Custom ROM to an Android Phone

Details about Android Custom ROM and How to Flash a Custom ROM to an Android Phone

Dec. 17, 2014 10:35 am / Posted by Jenefey Aaron to Android Tips
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Wonder what the whole Android custom ROM is all about? Or perhaps you already know it and look for ways to flash a custom ROM to your Android phone? No matter where you are, this article will show details about custom ROM and how to install a custom ROM to Android devices running from Android 2.3 to the latest Android 5.0.

Part 1: Must-know Info before Installing a Custom ROM

What ROM Stands for

"ROM" stands for "Read-only memory". A custom ROM replaces your device's Android operating system - normally stores in read-only memory - with a new version of the Android operating system. Custom ROMs are different from acquiring root access.

Why Install a Custom Android ROM

Part 2: Detailed Steps to Flash a Custom ROM to an Android Phone

The following are the 5 steps to finish the android flash ROM process. Read on to know more.

Step 1: Root Your Android Phone

The first thing is to root your phone, which will bring 10 bebnefits to Android device. We already have a post covering some versatile Android root apps to help you. This usually takes you about 5 minutes. Wait patiently until it finishes.

android flash rom


Step 2: Install ROM Manager App

Go to the Android Market on your phone and install ROM Manager. This application handles backing up and restoring, as well as flashing new ROMs. If you have installed this app, you can directly go to the third step.

Step 3: Backup Your System, Apps and Data

Before you make a change to your system, we suggest a Nandroid backup.

Step 4: Download and Save the ROM You Want to Your Phone

It's important to note that not every ROM is available for every device. So just pay attention to that. If you don't know exactly what you are looking for, you can search Google for help. For reference, CyanogenMod is the most installed Android ROM.

how to flash a rom to an android phone


When you've found a ROM that suits you, download it and save it to your phone. It should come in the form of a fairly large ZIP file. You can either download it directly from your phone, or download it on your computer and transfer it over via USB.

Step 5: Flash Your ROM

To flash a ROM, you need to do:

Note: Many users asked if they can flash a ROM without wiping data. We always recommend a full wipe before installing a new custom ROM for best performance. If you just follow one ROM and keep up with the updates, you may not always need to.

The flashing process should take 5-10 minutes installing everything and then 10-20 minutes during the first boot. Please be patient during this process.

Part 3: Restore a Previously Backed up ROM

Since you have backed up your original ROM, you can restore to it if you are having problems with the new one.

After that, you'll be back to the original OS.

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