If you are interested in Android custom firmwares, then this new version of Android 4.0 firmware based on the ICS SDK would work great on you Nexus S Android phone. This firmware has been tested on on a Nexus S i9020t and can also be used on Nexus S 4G –D270(untested). The working features in this firmware are given below.
ICS Android 4.0 ROM for Nexus S Working Features
- 3G- Data usage statistics (v2)
- WiFi (wifi patch required for v1, patch not needed for v2)
- USB (v2)
- BT- Face Unlock
- 2D/3D HW acceleration (some glitches)
Not working features : Tethering, camcorder
Download Android 4.0 ROM Nexus S
Android 4.0 firmware for Nexus S I920X download link V2
Official XDA Thread – Read this thread carefully before trying this firmware.