How can I update my Galaxy Tab to 2.3? I bought a Samsung Galaxy Tab which has Android 2.2. I want to upgrade it to 2.3 but I don’t know how. I searched to find out a way to do so, but I couldn't find anything.
You connect device to computer running samsung kies and do the damage with official gingerbread
All settings and databases will be lost or erased, so take care to make backup (if you know how to root then with titanium is best)

There is aftermarket Ice Cream Sandwich in development http://forum.xda-developers.com/forumdisplay.php?f=807