Roll up resultset SQL Server

Question

I have data generated like this

RowNumber   Firmware   value1   value2
    1          1          5      NULL
    1          1         NULL    NULL
    1          1         NULL    NULL

Any idea how to group this to get a single row using TSQL?

The output should be

RowNumber Firmware  value1 value2
    1        1          5      NULL

The rows with NULL values for 'value1' and 'value2' should be eliminated.

Answer 1

Select 
        RowNumber, 
        FirmWare, 
        MAX(Value1) as Value1, 
        MAX(Value2) as Value2 

from    Table

Group by 
        RowNumber, FirmWare

Answer 2

why not

...
where 
          not value1 is null
      or  not value2 is null

In this way you eliminate the rows with NULL values for value1 and value2 and obtain only one row without using group by.