Flash a costum Rom to your Android without using a PC [ROOT]

What's a ROM?

One of the best things about the openness of the Android platform is that if you're unhappy with the stock OS, you can install one of many modified versions of Android (called ROMs) on your device. A new ROM can bring you the latest version of Android before your manufacturer does, or it can replace your manufacturer-modded version of Android with a clean, stock version. Or, it can take your existing version and just beef it up with awesome new features—it's up to you.

Well, it is highly recommended that before going into remodding or tweaking your phone rom, you should do a backup if your current rom,Apps,system data..
This way even after flashing a new Rom you can reinstall your Apps+the data they had before the backup

Make a Backup of Your System, Apps, and Data

Now that you've got a custom recovery on your phone, the first thing you should do—before you ever make a big change to your system—is back it up. First, we'll make a Nandroid backup, which is basically a image of your current system. That way, if something goes wrong, you can restore your phone to exactly the way it was before you started tweaking. This will save you a lot of hassle if something goes wonky (which, let's be honest, can happen often). To do this:

Reboot your phone and enter recovery mode. This is a bit different on every phone, but usually involves some permutation of pressing the power and volume buttons at the same time.Head to the "Backup" or "Nandroid" section of your recovery mode. The default settings should be fine. If given the option, give your backup a name that helps you remember what it is (like "Pre-CyanogenMod Backup 07-03-16"). Confirm your backup and let it run.Wait for the backup to finish. This may take awhile.

I also recommend making a second type of backup: your apps and settings using Titanium  backup App..
This is different from a Nandroid backup because it just backs up the apps themselves, which you can then restore on any ROM you want. Nandroid backups take your entire system as it is, ROM included.

Note that you'll need to be rooted to use Titanium Backup. To perform a backup in Titanium:

Open Titanium Backup and grant it root permissions if it asks for them. If it experiences any problems with root, it'll tell you right now.Tap the "Batch" button in the upper right-hand corner (the one that looks like a little checkbox). Scroll down to the "Backup" section and find "Backup All User Apps." Tap the "Run" button. This will back up any apps you've downloaded from the Play Store, and their data. (You can try backing up your system data as well, but I find this usually doesn't work very well).

Download and Flash the ROM of Your Choice

When you've found a ROM you want to try, download it and save it to your phone. It should come in the form of a fairly large ZIP file, so you'll probably want to be on Wi-Fi to download it. You can either download it directly from your phone, or download it on your computer and transfer it over via USB.

GET A COSTOM RECOVERY IMAGE.
You need this as your stock recovery is Limitedvand may not allow you to the the fun tweaking you wished.


To flash your ROM:

Reboot your phone into Recovery mode, just like we did back when we made our Nandroid backup.Head to the "Install" or "Install ZIP from SD Card" section of your recovery. Navigate to the ZIP file you downloaded earlier, and select it from the list to flash it.Wait for the process to complete; it may take a few minutes.Depending on your situation (see below), you may also need to wipe your data and/or cache. In TWRP, you'll find this under the "Wipe" section, and in ClockworkMod, you'll need to either choose the "Wipe Data/Factory Reset" option or the "Wipe Cache Partition" option. When you're done, you're free to reboot into your new ROM.

I recommend using [WIPE TO INSTALL A NEW ROM] if available on your recovery.

So, when should you wipe your data and cache? Here are a few general guidelines:

If you're flashing a ROM different than the one you're currently running, you should wipe data and cache. Essentially, this performs a factory reset on your phone, and you will lose all your data.If you're flashing a new version of a ROM you're already running, we recommend wiping your data and cache—but you should be able to get away with just wiping the cache, meaning you get to keep all your apps and settings.

Remember, if you backed everything up with Titanium, then doing a factory reset isn't all that bad, since you can just restore most of it. Keep in mind that even if you're just upgrading your existing ROM, factory resets can be helpful. If you only wipe your cache, note that a few apps may run into issues, but reinstalling them or wiping that app's data usually fixes the problem.

Download and Flash Google Apps

Because Google's apps are not open source, custom ROMs can't bundle Google's apps—like Gmail, Hangouts, or the Play Store—with their ROMs. That means you'll need to download and flash them separately. Luckily, this is pretty easy to do
just head to this page on RootzWiki to find out which ZIP file you need, download it to your phone, and flash it just like you did the ROM
[usually when downloading a Rom, the appropriate GAPPS.ZIP file is attached so download and install them d same way...

Once you've flashed the latest Google Apps package, you should be all set! You'll have a new ROM with tons of settings to play with, the Play Store to download new apps, and—if you made a backup with Titanium—you can now head into Titanium Backup and restore all your apps and their settings. Enjoy!


Always Remember To Use The Share Buttons,Sharing Is Caring

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