The unlocked, international GSM version of the Samsung Galaxy Nexus handsets have already been upgraded to Android 4.0.4 Ice Cream Sandwich build in last month. Those among you who are owners Verizon branded 4G LTE capable Galaxy Nexus handset can manually check for an update if the OTA notification hasn’t already popped up on their phones, which will bump the build number up to IMM76K from ICL53F. According to reports, some users are getting this Android 4.0.4 ICS update and the upgraded handsets have been already spotted on-display in Verizon stores.
Keep in mind that the non-rooted users and who don’t have a custom recovery, have to wait for the OTA and you can not manually flash the update files on your handset. But, the Android 4.0.4 ICS update is now pushing out for the Verizon GNex handsets running the previous ICS build 4.0.2 ICL53F.
Download Android 4.0.4 ICS IMM76K update file form here (courtesy of Android Police). The update weighs 39.5MB in size.
These instructions will work for the users running 4.0.2 (ICL53F), not for those who are running the leaked Android 4.0.4 IMM30B build, but you can go back to ICL53F.
# Download the Android 4.0.4 IMM76K file form the above link.
# Rename the download file to update.zip.
# Don’t forget to take a full backup of your handset.
# You need to have the stock radios ek02 and ek05, which can be download from here.
# Reboot into recovery mode.
# Select “install zip from sdcard” and now tap “choose” button to find the required file.
# Follow the on-screen instructions and reboot the device.
# That’s it. Enjoy Android 4.0.4 ICS goodies.
I suggest you to head over to XDA Forums for full instructions on how to download and install the update.