Android 4.0.4 Ice Cream Sandwich ICS is out for Galaxy Nexus as well as Samsung Nexus S. Basically, the update of android 4.0.4 is to improve the overall performance stability, brings better camera performance, smoother screen rotation, improved phone number recognition and more. This ROM is cooked with stock ICS ROM 4.0.4 IMM76D by Brainmaster. The ROM is described to be very stable, tweaked, smooth and fast.
1. Clean & Backup your phone before installation.
2. Download Brainmaster’s IMM76D ICS 4.0.4 ROM v1.0 [156MB]
3. Upload zip file into your sdcard
4. Reboot into CWM recovery
5. Wipe Data using CWM recovery.
6. Choose the zip file and flash it in CWM recovery.
8. Wait for couple minutes & done.
There was still many tweaking is undergoing since Android 4.0.4 is still fresh. Stay tuned, there will be more efficient tweaking being in progress.