In order to update your D200/ S800/ S900 card terminal you have to be close to it and the terminal needs to be connected to the network. For the 2 portable models (D200, S900) we advise that they are connected to your WIFI network during the update.
Press the red key (X) and enter the terminal’s Menu.
Use the arrow down button to scroll down until you reach the System menu option. Select it with the green key (Enter).
Use the arrow down button to scroll down until you reach the System update menu option. Select it with the green key (Enter).
Wait until the terminal completes the update.
In case you need to check your terminal’s latest version please follow the steps below:
Select the X button to go to the Menu
Use the down arrow key (or the F2 key for D200) to locate the Application Details option
In the VERSION field you can see your android terminal’s latest version.