If you picked up a Verizon Galaxy Nexus yesterday, you probably got an over the air update to Android Ice Cream Sandwich 4.0.2 almost immediately. Today the GSM model joins the party, though there’s still not a lot of information available as to what it changes. Google’s official stance is that it’s for various bug fixes – they must have been small enough to escape the notice of reviewers, importers and international Android aficionados.

The update file is less than 10 megabytes, and installs in about five minutes. If you’ve already rooted your phone and installed a custom recovery image (like a good little Android modder) the phone will download the update, but fail to install it. You can either go back into the bootloader and flash the standard recovery from Google’s official Galaxy Nexus GSM image, or wait for someone to make a ZIP package that’s flashable via ClockworkMod. Seeing as it’s not a critical update, I’d wait for the latter, unless you can’t stand the pop-up messages from the update.

Elsewhere in the world of Nexus, Nexus S users are now the first to get an official upgrade to Ice Cream Sandwich. The update is rolling out to Nexus S GSM owners right now. Manufacturers are hot on the trail, with Asus already showing off an ICS update for the upcoming Transformer Prime and Samsung’s TouchWiz-flavored version of Ice Cream Sandwich leaked for the Galaxy S II. And of course, dozens and dozens of devices are getting Ice Cream Sandwich by way of custom ROMs. Google has an even newer version of Ice Cream Sandwich, 4.0.3, is in the works.

[device id=1740]

[via Android Central]