Today Sony has began to roll out a minor OTA update dubbed as ‘release6a’ for the Sony Xperia Tablet S,which will bring a vital VPN fix to the users who experience troubles while connecting to various VPNs. However if you don’t usually connect to any VPNs, you may choose not to download the update since it will not affect your usage.
For those who did not receive the update, go to Settings>About tablet>System Update to manually retrieve the update.