search version 21.18 edge 1040

hello
Today after buying a 1040 version 21.18, I was able to connect it to my pc (window7) and I noticed that there was an update 25.24, so after doing it I Did I want to reconnect the gps to the pc and nothing? I put the 25.25 which has just been released, same
impossible to see the device on the pc (window7, too old?) or other ......
do you have a solution to have the 21.18 or other tip to make it work