[Galaxy S II General] codeworkx:
CyanogenMod is a free, community built, aftermarket firmware distribution of Android 4.1 (JB), which is designed to increase performance and reliability over stock Android for your device.

#include
/*
* 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.
*
* Submitting bug reports on nightly builds is the leading
* cause of male impotence.
*/

CyanogenMod is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. CyanogenMod does still include various hardware-specific code, which is also slowly being open-sourced anyway.

All the source code for CyanogenMod is available in the CyanogenMod Github repo. And if you would like to contribute to CyanogenMod, please visit out Gerrit Code Review. You can also view the Changelog for a full list of changes & features.

http://teamhacksung.org/wiki/index.php/Main_Page

First time installing CyanogenMod 10 to your Galaxy S II, or coming from another ROM:

- Make sure you're NOT RUNNING A KERNEL WITH THE MMC-SUPERBRICK-BUG. If you're unsure, flash this ClockworkMod-Recovery using Odin/Heimdall.

- Make sure you're running a proper working ClockworkMod-Recovery

- Copy GApps and CM10 ZIPs to your internal SDCard

- Boot into Recovery

- Flash CM10 zip from internal SDCard

- Flash GApps zip from internal SDCard

- DO A DATA WIPE / FACTORY RESET (otherwise your device will be stuck at boot)

- Reboot

- Don't restore system data using Titanium Backup!

- Restoring Apps + Data might cause problems and is not recommended, avoid it if possible!

Upgrading from earlier version of CyanogenMod 10:

- Copy CM10 ZIP to your internal SDCard

- Boot into Recovery

- Flash CM10 zip from internal SDCard

- Reboot

CM10 nightly builds:

i9100: http://www.get.cm/?device=i9100

Google Apps:

http://goo.im/gapps

CWM flashable Modems:

LQ6: Download

Have a look at ROM-Manager (Developer: codeworkx) for much more Modems.

http://changelog.bbqdroid.org/#i9100/cm10/next

Webchat: http://webchat.freenode.net/?channels=teamhacksung-support

Server: chat.freenode.net

Channel: #teamhacksung-support

Don't expect any support if you:

- are not running stock cm-kernel

- have installed any mods

- have modified system files

If you're going to reuse our work, which we're doing for free, be fair and give proper credits.

This is the only payment we're really demanding and we deserve it to be mentioned because of the countless hours we've put into this project.

Open-Source doesn't meant Out-of-Respect!!!

http://xdaforums.com/showthread.php?p=29280368

If you want to donate a few bucks for the work we're doing in our freetime, goto teamhacksung website and hit the big donate button.

Thanks to all donators!