After the company released a list of Samsung phones and tablets, which will be upgraded to Android 4.0 Ice Cream Sandwich. Among other things, the greatest surprise was the fact that although such an update will be released for the smartphone Google Nexus S, its closest analogue Samsung Galaxy S will not be updated. Also not to be Ice Cream Sandwich and Tablet Samsung Galaxy Tab 7.0. Now, however, received an explanation as to why these devices will not work with the latest operating system, Google. The problem is that during the development of Samsung Galaxy S and Tab 7.0 has been developed for them based on the original firmware version of the standard operating system Android. The changes made by engineers, were deeper than usual: special widgets work with video calls, etc. In addition, each individual market, these models receive additional software and hardware features that depend on the sales region, and operators. For example, in Brazil's equipment includes ISDB-Tb-in TV tuner. These additions and changes can not be adapted to work correctly in not the most productive equipment. Officially. Unofficially, there is firmware that provide Android 4.0 ICS on these devices.