How do I load music on i’m Watch, using the mass storage device mode?

• connect i’m Watch to the computer;
• open the notifications panel by scrolling down with your finger;
• select the message “connected with USB cable” and then “connect”;
• open i’m Watch and paste the music into the “music” file;
• safely disconnect i’m Watch from the computer;
• once disconnected and prior to removing the cable, reopen the notifications panel and
• select the message “connected with USB cable”;
• this time, however, select “disconnect”.