CyanogenMod is a free, community built, aftermarket firmware distribution of Android 4.2 (Jelly Bean), which is designed to increase performance and reliability over stock Android for your device.JellyNexus is a mod of CM10.1 through custom graphics and scripting makes it better.
Code:
#include <std_disclaimer.h>
/*
* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you.
*/
• Slim, with no bloatware.
• System tweaks for better hardware support, and better experience.
• Performance tweaks, for much better performance.
• Completely modification-able, with multiple modification files.
• Tweaked bulid.prop for better performance.this is new script and it work very well :)
• Tweaked int.d
• Better GPS, and maps.
• Exclusive system tweaks.
• New Bootsplash
• Nexus Kernel Beta III
• New SMS Graphic style....it's a modern siii graphic
• More tweak in the kernel
• More Governor and I/O schedular
• Extreme Undervolted Kernel
• SuperBigMem Kernel with 394mb without 720p
• SnapDragon.......Neon and -O3 Optimizazion
• DPI: 230
• Based on Xistance alpha 4.2.2with my Nexus Kernel Beta III !
• More More Tweak and Optimization
• PIE Control
• S4 Ringtones
• S3 Sound Notify
• S3 Allarms
• New S series Bootanimation
What’s Working
- Audio
- Receiving and making calls
- GPS
- Compass
- Proximity sensor
- Wifi
- USB mass storage
- HW accelerated gui
- HW accelerated video
- Camera
- BLN9
- USB/Wifi tethering
- VSync
What’s Not Working
- 720p video recorder because we have 394mb of ram :)
- Bluethooth
Installation
• Take a full backup ( be sure to do this )
• Wipe data and cache.
• Flash the ROM.
• Flash Gapps.
• No need to fix Permissions
• Reboot.
• Most important step : Enjoy With JellyNexus!

JellyNexus i9001 31-03-2013
Downloads Gapps JB 4.1.2
Gapps JellyNexus 4.2.2
CREDIT:
thank alireza for infinity engine
Ivendor and arco
Cyano team
Xistance
Cristopher
Davidteri
And other that i forgot now