For better performance and good battery life I'm loading SpeedMod K3-7 on top of Android 4.0.4 N7000DXLR2.
How to install it?
1. Download jBroid_Kernel_Cleaning_Script_Ed-1.zip (to clean-up previous kernel)
2. Download SpeedMod K3-7 for CWM
[of course you need to copy both files to your external sd-card]
3. Boot Recovery (Home + Volumne UP + Power Button)
4. Flash jBroid
5. Flash SpeedMod
-Assumption you have ROOT + CWM.
-If you don't download this [CWM zip] and [SUPERSU-Busybox-Installer.zip]
-You may use Mobile Odin directly but I just want to test CWM mode flashing.
-Have battery more than 60%. The best 100%. I have case where I flash kernel when battery 50%, after 1st boot the battery percentage show 30%. 20% decrease after flashing even I had the phone connected to power cord.
-You should have external sd-card and keep your tools/ZIP/TAR in a folder for easy flashing.
Performance works like before but fail to ON Bluetooth. If you need Bluetooh very much, DO NOT load SpeedMod K3-7
Continue reading jBroid here and SpeedMod here
-I had tried NOTECORE Kernel, it's fast but the battery became hot and bad battery life