A few hours ago, reports surfaced online that Verizon started pushing out the Android 4.0.4 Ice Cream Sandwich OS update for its Samsung Galaxy Nexus handsets. Today, another variant of the Galaxy Nexus handsets has also been upgraded to a new firmware in the U.S. There were reports of data connection problems for the Sprint branded Samsung Galaxy Nexus handsets. Yes, many Sprint users couldn’t connect to any network. We also heard that Sprint and Samsung were working on it to resolve the issue
If you’re a Galaxy Nexus owner on Sprint network, you might check the settings menu to pull the new update. Sprint is now rolling out a new firmware update IMM76D.L700FD02 for its LTE based Galaxy Nexus handsets to fix the 3G data connectivity issues, bumping the software version up to Android 4.0.4. The latest update is also carrying a patch to fix a bug that cause the device displaying the incorrect network time after activation and there is a Google Wallet update is also coming with the mix.
An OTA notification alert should notify on your handset’s screen asking you to accept the FD02 update and install it and You’ll need to be connected to a Wi-Fi network. If the update fails to reach your handset yet, you can try to pull the OTA update by hitting up the Menu –> Settings > About Phone –> System Updates and tap Check Now button if you found any update, follow the on-screen instructions till the download process of the update and installation process finished successfully.
Source: Sprint Forums