Hi, after connecting the T3 to the computer, you have 2 options for uploading the program to the T3. Either click on the Communications tab and "Send to Device", then "Send" or on the tool bar click on the little plug symbol with the red left and right arrows and then "Send". Depending on the size of the file, it should only take a few seconds.
As an option, you can also connect the remote after clicking on all the buttons.