Installing CyanogenMod 10 (CM10)

Note that these builds are meant just as previews, contains a lot of bugs, and may have issues that need to be fixed.
If you still want to install CyanogenMod 10 Preview on your phone, just follow these steps:

1. Make sure your device is rooted ICS Bootloader and has ClockworkMod recovery installed.
2. Download Jelly Bean's firmware + Google Apps
3. Copy the ROM to your SD card.
4. Reboot your phone into CWM recovery.
5. Wipe data, cache and dalvik cache.
6. Flash ROM + Goole Apps from CWM recovery.
7. Reboot your phone.

Voila!. Now you're using Android 4.1 Jellybean preview. Remember, as it is only for preview, no support will be given by developers.
Flash it at your own risk!. However, until now, no 'super' bug that will damage your phone has found. So don't worry, Cheers.