Install JellyBam Android 4.2.1 Jelly Bean on Galaxy S3 I9300

Install JellyBam Android 4.2.1 Jelly Bean on Galaxy S3 I9300...  Now user can install JellyBam Android 4.2.1 Jelly Bean on Galaxy S3 I9300.

Here is the complete tutorial how you can it. Before going to forward, do not forget to backup all your personal data and apps.

JellyBam Android 4.2.1 Features:

For a quick look at what features are offered by the SuperNexus ROM, read the long list below:

1.     Built from source
2.     Overall features of AOKP, CM10.1
3.     Custom JellyBam Settings with preferences
4.     Tons of customizations
5.     Themes and Mods in JellyBam style
6.     Latest CM10/AOKP Kernel compiled from sources
7.     Google apps included
8.     New Mali driver
9.     Exynos HWComposer
10.     Lockscreen with x8 Custom app targets
11.     Bravia Engine libraries
12.     Bravia XLoud audio libraries
13.     PerApp DPI XPosed settings
14.     CM 10.1 Chronus widgets
15.     Infinite widgets on lockscreen
16.     Custom home action and hardware button in lockscreen
17.     Quick/Long click on weather and clock actions
18.     JellyBam Panel in settings app
19.     AOKP and CyanogenMod Settings
20.     Mass storage mode
21.     OTA Update via UpdateMe App
22.     GAPPS included, no need to flash anything else
23.     Apollo Music Player (Themed)
24.     Quick SMS
25.     AwesomBeats Lib
26.     A good combination of stability and performance (Thanks Siyah Kernel + Personal mod)
27.     Bluetooth hacked for send / receive APK
28.     YouTube hacked with 3G+WiFi HD 720p PlayBack
29.     Init.d scripts
30.     JellyBOOM script
31.     Media quality tweak
32.     3G and GPS Tweak
33.     RAM Optimization + Multitasking
34.     SmoothScrolling tweak
35.     V6 Supercharger included
36.     lot of Themes available in UpdateMe
37.     TouchWiz 5 Launcher
38.     Trebuchet Launcher
39.     *Beats Audio by Dr Dre*(Powerfull bass)
40.     Clearbass Sound by Sony*(Clear Bass)
41.     Xloud by SonyEricsson*(higher sound volume and clearer sound on speaker)
42.     Dolby Digital Sound*(Equalizer enhancer bass setting and Surround setting)
43.     Surround Sound*(Deeper bass and reduction of bass distortion plus Eq setting support)
44.     JellyBam custom Bootanimation by metallaxis
45.     Center Clock/No clock/Right Clock
46.     Volume Panel (Volume Rocker allows you to change ALL volume levels in one Menu)
47.     Lockscreen Weather
48.     Lockscreen Vibration on/off toggle
49.     Performance/Color Settings
50.     Brightness Control Slider
51.     Multilang
52.     JellyBam Style

Installed all your USB DRIVERS FOR Galaxy S3 I9300 through PC. Some things you should keep in mind.

1. Enable the Debugging Mode. By enable the debugging mode you can connect own android phone or tablet with PC.

2. You should check your battery. Your batter should be 80% to 85% charges. If your phone or tablet will be off during flashing ROMs or installing mods and updates due to low battery. Then your Phone or tablet will be dead permanently.

3. As, i told you. You should back up all your date. You will need it for new ROM.

4. Your tablet should be Unlocked. 

Now we move forward and important part.

Here is the complete detail in different steps.

Read the all steps carefully.

Step 1
Download JellyBam Android 4.2.1 Jelly Bean ROM for Galaxy S III to your computer.

Step 2
Connect and mount your Galaxy S3 USB memory on your computer using the USB cable.

Step 3 
Now copy/paste the downloaded Android 4.2.1 ROM zip file to your SD card. Make sure the file is in the SD card root (not in any folder).

Step 4
Then turn OFF your phone and disconnect from the USB cable.

Step 5
Now to get in the Recovery Mode. Switch ON the phone while pressing and holding Volume Up + Home + Power buttons together. 

Step 6
In ClockworkMod recovery, perform a full data wipe first. Then scroll down to “flash zip from SD card” and press the Power button to select it.

Step 7
Press the Power button again and select “choose zip from sdcard”.

Step 8
Now using your volume keys, navigate to the Android 4.2.1 ROM zip file that you copied to your SD card and select it using the Power button. Confirm the installation on the next screen and the installation procedure should start now.

Step 9
After the installation completes, go to “+++++Go Back” and reboot the phone by selecting “reboot system now” from the recovery menu. The phone will boot now and it might take about 5 minutes to boot on your first time. So, please wait.

That’s it! Your Galaxy S3 should now have JellyBam Android 4.2.1 Jelly Bean custom ROM installed on your phone! Go to Settings > About phone to verify.

Now JellyBam Android 4.2.1 Jelly Bean installed on Galaxy S3 I9300.