Updating a Galaxy Tab - Telegraph I have a Samsung Galaxy Tab 2 10.1 tablet with Wi-Fi and 3G. It is not tied to any phone network and I have never received an update. I would like to upgrade to the newer version of Android and researching the Samsung mobile website shows that both O2 and Vodafone have released updates. I have an O2 Monthly contract SIM card; would it be possible to download and apply the O2 upgrade? Is there anything I should watch out for? Installing a major operating system upgrade from an alternative source, which may be a customised version and not suitable for your particular device, is never a good idea, nor is installing it over a mobile broadband connection. Apart from anything else it could fail horribly if the battery gives out at a crucial point, and expensive, depending on your tariff and data allowance. The recommended method is to use your home broadband connection, and download and install the upgrade via your PC (or MAC), using Samsung's Kies utility. This also takes care of the all-important backup, which you should carry out first, and recovery, just in case something goes wrong. There is a link to the free Kies download and a simple to follow tutorial on upgrades on the Samsung Support website.