NEW COOL FEATURES:
- Based on DDLF1.
- Totally Dark Jelly Bean themed.
- Each and every icon fine tuned to look like Jelly Bean.
- A new Jelly Bean task manager ( Recent apps list).
- Added Swipe to clear notifications on Status Bar.
- A new, AWESOME JELLYBEAN status bar and notification panel.
- New music app based on stock Touchwiz, but contains DSP equalizer support.
- NEW LOCKSCREENS- Never miss a chance to show off your cool lockscreen.
- OTA FEATURE added. Now users can automatically update the ROM from OTA upgrades, in the settings menu.
- A TOTALLY REVAMPED SETTINGS MENU ,With the following new controls : Statusbar Control, Lockscreen Control, Sound Effect Control, and Quick Toggles Control...finally, your phone is truly yours!
- New Jelly Bean Digital Clock, analogue clock, and Jelly Bean Search Bar.
- New smarter JellyBean keyboard.
- Extented power menu: Now those long processes are long no more!
- NEW KURO KERNEL, be it more power for gaming, or power saving mode for Deep Sleep, Kuro kernel takes care of your batteries in the best possible way.
- Battery life megaboosted, last upto 2 days in power saving mode!
- CPU control feature added....high performance or underclock...choice is yours!
- Improved memory management.
- Two awesome launcher choices: You get both HOLO LAUNCHER, and the STOCK Touchwiz launcher, which is Jelly Bean themed.
- Full Screen Caller Mode: Now see your friends in FULLSCREEN while calling them.
- SONY BRAVIA ENGINE added...your pictures are clearer than before!!
- MULTILANGUAGE: Cestina , Dansk, German, Dutch, English ( US, UK) , Spanish, Estonian, French, Gaeliege, Hravatski, Islenska, Italiano, Kazakh, Latviesu, Lietuviu, Macedonian, Magyar, Nederlands, Norsk, Polski, Portuguese, Ronan , Slovencina, Srpski, Suomi, Svenska, Turkish, Thai, Greek, Chinese, Russian, Hebrew.
- Net speed tweaks: Increase your net speed.
- Superfast Chrome browser included.
- New superb bootanimation.
Download: Click here!
Alternative download link: Click here!
- Root your phone. If already rooted, proceed to the next step.(How to root Galaxy Y-click here)
- Remove a2sd if you have it. You can use link2Sd.
- Place the above file to your sd card (NOT IN ANY FOLDER!!!)
- Switch off your phone.
- Go to Clockwork mode. If you don't know what is CWM, click here.
- Use the volume keys to move up and down.
- Wipe data and cache and Dalvik cache.
- Now choose: Install zip from sd card.
- Choose JELLYBLAST V3.signed.zip
- Choose "yes"
- It will be Installed. Now reboot your phone. First bot will take time. Be patient.
- Please wait until media scanning is completed.
- Enjoy!!! :P
Source: http://forum.xda-developers.com/showthread.php?t=1679563 (Click Thanks button)
For Trouble Shooting Guide: Please visit XDA Forum (http://forum.xda-developers.com/showthread.php?t=1679563)