My VF page is divided into two sections: 

Top section has a text box and a command button (Submit) that takes in an employee id and populates a page block table with devices issued to the employee. 

Bottom section has a page block table where you input new serial numbers and update the employee by issuing new devices to them upon clicking the save button. 

When I click the save button in the botton section, the code executes perfectly in the back end. But the page refreshes after save. However, the table in the top section does not rerender to show the new devices. I have to click on the Submit button again for it to repopulate with the new data. 

Is there any way I can refresh the first table as soon as the page is reloaded after Save?