How to install: Grab the OTA package here http://android.clients.google.com/packages/ota/google_crespo/VQ8PQk_V.zip TMO version Update 4.0.3 from the google servers (128mb download) Rename it to update.zip. This isn't needed for the Nexus S bootloader, but it makes things easy, if that's how you prefer them. Copy it over to the internal storage on your Nexus S. Power off, then hold volume up and p